API Development is an effective way for software to communicate and interact with each other over the internet. It’s a great way for developers to expand the capabilities of a program or systems by creating interfaces and allow data to be shared between different types of technology. With an API, existing systems can connect and more advanced solutions can be made. Hiring an API Developer can enable businesses to streamline processes and enable a much faster integration of existing software solutions.

API Developers are skilled engineers specialized in creating new APIs and maintaining existing ones. They are responsible for developing and troubleshooting current APIs, designing APIs from standards-based web services, maintaining inventory and implementing authorization mechanisms. Additionally, they incorporate different technologies together to create advanced software solutions that integrate cloud systems like Amazon Web Services or MongoDB and APIs with point-and-click platforms, like WordPress or HubSpot.

Here’s some projects that our expert API Developer made real:

  • Creating advanced databases on different cloud systems
  • Linking between two cameras from a microscope
  • Interfacing with customizing Wordpress themes, Woocommerce themes and SMS services
  • Building secure back end systems to analyze different public APIs
  • Applying sophisticated authorization mechanisms
  • Creating comprehensive ecommerce websites using MERN Stack
  • Developing node APIs for exchange markets using Node.js, Web3.js, Ether.js
  • Automatically out of stocking items from supplier’s stock through an API system.

It is no surprise that good API Development is the cornerstone of many successful software solutions. Our expert API Developers are well experienced in developing suitable solutions for projects ranging from app development to SaaS applications, game development to enterprise system integrations. WithFreelancer.com, businesses can easily hire one of these skilled professionals to build their own bespoke projects that are perfectly tailored for their needs. So why not post your own project on Freelancer today and hire an expert API Developer?

จาก 98,007 รีวิว ลูกค้าให้คะแนน API Developers 4.9 จาก 5 ดาว
จ้าง API Developers

API Development is an effective way for software to communicate and interact with each other over the internet. It’s a great way for developers to expand the capabilities of a program or systems by creating interfaces and allow data to be shared between different types of technology. With an API, existing systems can connect and more advanced solutions can be made. Hiring an API Developer can enable businesses to streamline processes and enable a much faster integration of existing software solutions.

API Developers are skilled engineers specialized in creating new APIs and maintaining existing ones. They are responsible for developing and troubleshooting current APIs, designing APIs from standards-based web services, maintaining inventory and implementing authorization mechanisms. Additionally, they incorporate different technologies together to create advanced software solutions that integrate cloud systems like Amazon Web Services or MongoDB and APIs with point-and-click platforms, like WordPress or HubSpot.

Here’s some projects that our expert API Developer made real:

  • Creating advanced databases on different cloud systems
  • Linking between two cameras from a microscope
  • Interfacing with customizing Wordpress themes, Woocommerce themes and SMS services
  • Building secure back end systems to analyze different public APIs
  • Applying sophisticated authorization mechanisms
  • Creating comprehensive ecommerce websites using MERN Stack
  • Developing node APIs for exchange markets using Node.js, Web3.js, Ether.js
  • Automatically out of stocking items from supplier’s stock through an API system.

It is no surprise that good API Development is the cornerstone of many successful software solutions. Our expert API Developers are well experienced in developing suitable solutions for projects ranging from app development to SaaS applications, game development to enterprise system integrations. WithFreelancer.com, businesses can easily hire one of these skilled professionals to build their own bespoke projects that are perfectly tailored for their needs. So why not post your own project on Freelancer today and hire an expert API Developer?

จาก 98,007 รีวิว ลูกค้าให้คะแนน API Developers 4.9 จาก 5 ดาว
จ้าง API Developers

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    ฉันกำลังมองหาระบบ POS สำเร็จรูปที่ “ซื้อขาด” เพื่อนำไปใช้ต่างประเทศ ไม่ต้องการเริ่มเขียนใหม่ เพียงปรับแต่งให้ตรงกับเงื่อนไขต่อไปนี้ • ตัวแอปต้องติดตั้งได้บนมือถือ Android และเครื่อง Sunmi V3 • มีเว็บหลังบ้านที่เปิดผ่าน Browser ได้ • จัดการสต๊อกเหมือนร้านชำ/มินิมาร์ท พร้อม – สแกนสินค้าเข้าและออกสต๊อก (ฟีเจอร์หลัก) – รายงานและวิเคราะห์ข้อมูลสินค้า – แจ้งเตือนเมื่อสินค้าหมดสต๊อก • สรุปยอดชำระเป็น QR Code ให้ลูกค้าสแกนจ่าย หรือรับเงินสดก็ได้ • เมนูเลือกสินค้าได้จากหน้าจอหรือสแกน QR • ไม่รับระบบที่ทำงานเฉพาะบนเว็บเท่านั้น—ต้องมีแอป Android เต็มรูปแบบ • ตัวอย่างแนวทางที่ต้องการ: loyverse, POSPOS ฉันต้องการเห็นเดโมหรือวิดีโอการทำงานก่อนตัดสินใจ และต้องส่งมอบเวอร์ชันพร้อมใช้งานพร้อมไฟล์ติดตั้งภายในหนึ่...

    $369 Average bid
    $369 การประมูลเฉลี่ย
    8 คำเสนอราคา

    Saya ingin menambahkan fitur login baru berbasis media sosial pada aplikasi saya, dan pilihan saya jatuh pada Google Sign-In. Saat ini belum ada sistem autentikasi di aplikasi, jadi Anda akan membangun alur login ini dari nol. Apa yang saya butuhkan: • Tombol “Masuk dengan Google” yang mengikuti pedoman brand Google. • Implementasi OAuth 2.0 lengkap, termasuk penanganan token, refresh token, dan logout. • Pengambilan data profil dasar (nama, email, foto) dan penyimpanan aman di basis data kami. • Penanganan error yang jelas jika pengguna menolak izin atau koneksi gagal. • Dokumentasi singkat berisi langkah build, variabel lingkungan, dan cara menambah platform lain di masa depan (mis. Facebook atau LinkedIn). Teknologi backend kami fleks...

    $346 Average bid
    $346 การประมูลเฉลี่ย
    8 คำเสนอราคา

    I’m looking for a developer who can take full ownership of our existing, self-hosted CRM and website. The immediate focus is managing ongoing maintenance and performance optimisation—everything from monitoring resource usage on our server to tightening page-load times and ensuring uptime is rock solid. Once the platform is running smoothly, I’d like you to drive a round of strategic upgrades: introduce new CRM features, refresh the interface for a cleaner user experience, and build out richer reporting tools so our team can extract insights at a glance. Alongside those enhancements, we’ll need advanced API work. You’ll be connecting us to selected third-party services and creating custom APIs that expose key data endpoints for our partners. You will have dir...

    $1147 Average bid
    $1147 การประมูลเฉลี่ย
    59 คำเสนอราคา

    I have a green-field web idea and want it built from scratch on a Python stack—Django is my first choice, though a solid case for Flask is welcome. The project covers everything from planning the architecture and database schema, through building the API and responsive front-end, to deploying a production-ready version on a cloud host. Clean, well-documented code in a Git repository, regular checkpoints, and clear communication are non-negotiable. If you have shipped live Django or Flask sites before, I would like to see them and hear how quickly you could deliver an MVP. Deliverables • Technical design and schema draft • Working MVP on a staging server • Production deployment with hand-over notes I’m ready to start as soon as I find the right fit.

    $483 Average bid
    $483 การประมูลเฉลี่ย
    207 คำเสนอราคา

    I'm seeking an experienced developer to create an algorithmic trading bridge connecting TradingView and AmiBroker. The bridge should support real-time data synchronization, automated trade execution with 5 brokers ,and copy trading, marketplace, and robust error handling and logging. Additionally, it should facilitate a trading marketplace and support various trading strategies, including scalping, swing trading, and arbitrage. Key Requirements: - Connect TradingView and AmiBroker - Real-time data sync - Automated trade execution - Error handling and logging - Support for multiple trading strategies - Development of a trading marketplace - Copy trading - Market Place Ideal Skills and Experience: - Proficiency in trading platforms, especially TradingView and AmiBroker - Strong backgro...

    $9359 Average bid
    $9359 การประมูลเฉลี่ย
    12 คำเสนอราคา

    I’ve lined up a series of tasks to turn a concept into a fully-functioning web application, and everything needs to be written in Python. You’re free to choose between Django or Flask for the backend—whichever lets you craft clean, secure APIs and a maintainable codebase fastest. Here’s what I need from you: • Spin up the project skeleton, configure the environment, and set up version control. • Build out the core routes/endpoints, wire them to a relational database (PostgreSQL or MySQL work fine), and keep the code modular for easy scaling. • Create a simple but responsive front-end that consumes those endpoints and showcases at least one complete user flow (think registration, login, basic CRUD). • Add concise documentation that covers...

    $20 / hr Average bid
    $20 / hr การประมูลเฉลี่ย
    167 คำเสนอราคา

    I need a web-based donation platform aimed at individual donors. At its core the app must let visitors register, create a personal profile, make a contribution seamlessly, and then return any time to view a clear history of everything they have given. Key features I must see working end-to-end: • Secure payment processing that supports major cards and wallets, with clear error handling and confirmation receipts. • Persistent user profiles so donors can log in, edit details, and store preferred payment methods. • Real-time donation tracking: each gift shows up instantly in the user’s dashboard and in an admin view for reconciliation. A clean, mobile-first interface is important, and I expect common security best practices (HTTPS, hashed passwords, CSRF protectio...

    $21 Average bid
    $21 การประมูลเฉลี่ย
    27 คำเสนอราคา
    Centralized CMS for Distributor Network
    6 วัน left
    ยืนยันแล้ว

    I need a centralized website platform for distributors, built on a single CMS. In this setup, the main website would serve as the core system, while each distributor would have their own dedicated homepage or subsite within that platform. Each distributor would be able to log in to their own dashboard and customize their homepage content, such as text, images, contact details, and local promotions, without affecting other distributors. At the same time, your team would retain full control over the overall structure, branding, and shared content like product information. This approach ensures consistency across your brand while giving distributors the flexibility to represent their local business. It also simplifies management, as everything is handled through one system rather than maint...

    $490 Average bid
    $490 การประมูลเฉลี่ย
    199 คำเสนอราคา
    WordPress CRM Developer with Multi-User Access & Order Tracking
    6 วัน left
    ยืนยันแล้ว

    We need a skilled WordPress developer to build a custom CRM system with eCommerce functionality that supports multiple user roles and access levels. Our client needs to move away from Shopify due to its limitations with multi-user access (which requires expensive Shopify Plus). We want to create a WordPress-based solution that allows three different types of users to log in with role-based permissions. Requirements: • Strong WordPress development experience • WooCommerce integration and customization • Custom user role and permission management • Order tracking system implementation • Customer dashboard development • Experience with AI-assisted development tools (Claude preferred) • Frontend development skills (HTML, CSS, JavaScript) • Database des...

    $34 / hr Average bid
    $34 / hr การประมูลเฉลี่ย
    107 คำเสนอราคา

    We are LISH, a platform where teams collaborate to deliver real-world projects. We are currently hiring 3 key roles: 1. Full Stack Developer What you’ll do: Build frontend (React + Tailwind) Develop backend APIs (Flask) Integrate database (PostgreSQL / Supabase) Connect payments and core systems Requirements: Good understanding of JavaScript & React Basic backend knowledge (Python/Flask) Ability to build and debug independently 2. UI/UX Designer What you’ll do: Design modern, clean interfaces Create dashboards and landing pages Improve overall user experience Requirements: Figma or similar tools Strong design sense Knowledge of modern UI trends (glassmorphism, minimal UI) 3. Tester (QA) What you’ll do: Test features and flows Find bugs and report clearly Ensure smoot...

    $71 Average bid
    $71 การประมูลเฉลี่ย
    23 คำเสนอราคา
    Muslim matrimony app development
    6 วัน left
    ยืนยันแล้ว

    The project is to create a full-featured Muslim matrimony mobile application that runs smoothly on both iOS and Android. The core objective is a clean, intuitive user experience that makes it easy for Muslims to discover compatible matches while maintaining privacy and authenticity throughout the process. Scope of work • Build native (or well-optimised cross-platform) apps that launch from a single codebase yet feel at home on each platform. • Implement secure account creation with phone or email verification, profile setup, and a modern matchmaking flow. • Enable real-time chat so matches can converse safely inside the app, with the necessary moderation hooks in place. • Design a scalable backend (Firebase, Node, or similar) that handles user data, media uploa...

    $333 Average bid
    $333 การประมูลเฉลี่ย
    112 คำเสนอราคา

    I'm looking for a skilled developer to create a USDT wallet management software. The software should be compatible with Windows and Linux platforms. Essential features include: - Secure multi-signature support - Comprehensive transaction history - User-friendly address book Ideal skills and experience: - Expertise in cryptocurrency wallet development - Proficiency in cross-platform software development - Strong security protocols and encryption knowledge Please provide examples of previous similar work.

    $270 Average bid
    $270 การประมูลเฉลี่ย
    12 คำเสนอราคา

    我想要一套专注后台管理的电商程序,首要目标是让运营人员能够轻松完成用户管理工作。核心需求如下: • 用户管理:实现用户资料的增删改查、分组与权限控制,支持批量导入导出以及基本的搜索筛选。 • 预留客户端接口:程序需提供规范化的 RESTful API,便于我后续接入不同客户端。 我更倾向于使用主流的 Web 技术栈,代码结构清晰、注释完善,数据库设计满足扩展性。请在交付时提供: 1. 完整源代码与依赖清单 2. 数据库脚本或迁移文件 3. 部署说明(本地与生产环境) 4. 简短的操作手册 如有成熟的用户权限模块或后台模板可复用,也欢迎提出。希望你在开始前概述技术方案与开发周期,让我们快速进入实施阶段。

    $163 Average bid
    $163 การประมูลเฉลี่ย
    5 คำเสนอราคา

    ByteFarm/ ├── ML/ # Machine Learning pipeline │ ├── src/ # Inference, weather client, decision engine │ ├── data/ # Soil CSV, district data │ ├── models/ # Trained .pkl models (gitignored) │ └── config/ # Crop calendars, soil profiles ├── backend/ # FastAPI REST API │ ├── # App entry point │ ├── routes/ # /recommend, /predict-yield, /profile, etc. │ ├── services/ # Model service, business logic │ └── # PostgreSQL via psycopg2 ├── frontend/ # Flutter app (Web + Android) │ └── lib/ │ ├── # App entry │ ├── screens/ # Dashboard, Login, Results │ ├── services/ # Auth (direct HTTP to Supabase) │ ├── # Ba...

    $17 Average bid
    $17 การประมูลเฉลี่ย
    14 คำเสนอราคา

    We’re looking for an experienced Shopify App Developer to build a high-performance bundle & upsell app similar to Kaching, Pumper, and AOV.ai. The goal is to create a scalable public Shopify app that helps merchants increase conversions and boost AOV through bundles, quantity breaks, and upsells, with an easy no-code setup. The app should include core features like fixed and mix-and-match bundles, quantity discounts, BOGO offers, frequently bought together, in-cart and post-purchase upsells, and one-click add-to-cart functionality. It should also have a fully customizable, mobile-friendly UI compatible with all themes, along with a simple merchant dashboard for creating offers, tracking revenue, conversion rates, and running A/B tests. We expect a clean, performance-optimized ...

    $577 Average bid
    $577 การประมูลเฉลี่ย
    69 คำเสนอราคา
    Zoho AI Agent & Invoice OCR
    6 วัน left
    ยืนยันแล้ว

    I’m extending our Zoho Creator app with two tightly-linked features and want a developer who already speaks the Zoho ecosystem fluently. 1. Conversational AI agent The first module should let clients type a question inside our existing Creator portal and instantly receive answers drawn from the invoice records already stored in that same Creator database. Think of it as a smart layer over Deluge queries: the agent interprets the user’s request, fetches the right data, formats a clear reply, then logs the entire exchange for audit. An OpenAI or similar LLM endpoint is fine as long as it sits securely behind Creator’s functions. 2. OCR-driven invoice capture Most invoices reach us as scanned paper PDFs or images. I need an OCR pipeline (Zoho’s own Vision, Google...

    $207 Average bid
    $207 การประมูลเฉลี่ย
    115 คำเสนอราคา

    I’m looking for a developer who can build a stable, easy-to-maintain Discord bot with that focuses on server moderation. Core commands should let my staff quickly ban, mute, kick, and warn members while logging every action to a dedicated mod-log channel. Beyond the standard tools, the bot also needs to: • Send automated welcome messages in a customizable embed as soon as someone joins • Post regular announcements pulled from a channel or JSON file on a timed schedule • Push event reminders a set number of minutes or hours before start time For smoother moderation, I want spam detection with configurable thresholds, a clean message-filter system for links or specific words, and automatic role assignments triggered by reactions or join conditions. I’ll ...

    $26 Average bid
    $26 การประมูลเฉลี่ย
    41 คำเสนอราคา
    Full-Stack Developer (React, Node.js, JavaScript, Webflow)
    5 วัน left
    ยืนยันแล้ว

    Looking for a full-stack developer who can work on both frontend and backend. Requirements: Webflow experience (required) Frontend: React Backend: Node.js / Express (already built, needs updates) JavaScript Deployment: GitHub, Netlify, Render

    $455 Average bid
    $455 การประมูลเฉลี่ย
    371 คำเสนอราคา
    Development of AI-Powered Football Analytics System
    5 วัน left
    ยืนยันแล้ว

    # AI-Based Football Pitch Video Analytics System – Freelancer Project Brief ## Project Overview We are looking for a freelancer or team to develop an AI-powered computer vision and player performance analysis system for indoor football / mini football pitches. The system will be used in multiple football pitch locations across Türkiye. The software must: * Track every player during the match * Analyze player and team performance * Automatically generate statistics and ratings * Upload the match analysis to a website shortly after the match ends A complete hardware setup is already available for the first pitch: * 6 cameras installed * 1 high-performance PC * NVIDIA RTX 5080 GPU * Remote access via Tailscale is already configured The first implementation will be done on t...

    $4771 Average bid
    $4771 การประมูลเฉลี่ย
    59 คำเสนอราคา

    Senior .NET (C#) Developer with WEBRTC and HLS Live Streaming Experience (Freelance) We are building a live streaming and creator engagement platform. The platform allows creators to: go live (public broadcast using HLS) host private 1-to-1 sessions (WebRTC) host group sessions (WebRTC) interact with users via chat(SignalR) receive tips and payments We are looking for an experienced developer who can build scalable live streaming infrastructure using HLS for broadcast and WebRTC for private sessions. Key Responsibilities Develop backend APIs using ASP.NET Core (.NET) Implement HLS-based live streaming pipeline for public broadcasts Integrate video pipeline (FFmpeg / RTMP ingest → HLS output) Work with streaming servers/CDN (NGINX RTMP, AWS Media Services, or similar) Implement We...

    $683 Average bid
    $683 การประมูลเฉลี่ย
    27 คำเสนอราคา

    A FusionPBX (FreeSWITCH) installation and custom call flow configuration will be performed on a cloud server (Debian-based). The technical requirements of the project are as follows: 1. Server and Panel Installation: Installation of an up-to-date and stable FusionPBX on a Debian operating system. Configure firewall and Fail2Ban settings. 2. SIP Trunk and Incoming Call Management: Definition of SIP Trunk information (e.g., Telnyx / Verimor) provided by me. Creation of an enterprise welcome menu (IVR). Directing callers to the relevant extensions via the voice menu. 3. Dynamic Mobile Phone Routing (Critical Point): Incoming calls to extensions will be routed directly to their mobile phones. Important: The mobile numbers to which extensions are routed will not be fixed. Each extensio...

    $108 Average bid
    $108 การประมูลเฉลี่ย
    76 คำเสนอราคา

    Somos un ecosistema tecnológico en crecimiento que gestiona una flota activa de 300 vehículos con proyección a 3,000. Estamos institucionalizando nuestro proceso de innovación mediante un Sistema de Gestión de Viabilidad que conecte de forma eficiente nuestros nodos de Marketplace, Autocredit y Telemática. Buscamos expertos que trabajen bajo metodologías sólidas de SDLC y diseño orientado a datos. Necesitamos a un Arquitecto de Soluciones Senior para la fase más crítica del proyecto: la Fase 4. El objetivo es traducir requerimientos de negocio en planos técnicos ejecutables. Responsabilidades clave: Modelado de arquitectura de datos para asegurar interoperabilidad entre módulos financieros y telem&...

    $1699 Average bid
    $1699 การประมูลเฉลี่ย
    42 คำเสนอราคา

    We brought in this developer to debug a production RAG pipeline that had quietly degraded after a dependency bump. The pipeline — built on LangChain, FastAPI, and Supabase pgvector — was still returning results, but retrieval quality had clearly dropped: wrong chunks, wrong document sections, irrelevant context making it into answers. The scope was well-defined: audit our chunking config, confirm embedding model consistency between ingestion and query time, check our pgvector distance/index setup, and run live test queries to surface exactly where retrieval was going wrong. He delivered on every point. The root cause turned out to be a silent embedding model mismatch introduced during a langchain-openai upgrade — something easy to miss and painful to debug without knowin...

    $134 Average bid
    $134 การประมูลเฉลี่ย
    45 คำเสนอราคา

    I need a Tuya IoT template tailored to an indoor, smart clothes-drying rack. The goal is to define all DP points, panel layout, and interaction logic so the finished product integrates smoothly with the Tuya Smart app and cloud. Key functions I want covered include basic lift/lower controls, timed drying presets, temperature / humidity display if the hardware supports it, and in-app notifications when a cycle completes. Please map the data points clearly, assign suitable icons, set default units, and ensure the UI looks polished on both Android and iOS. I will provide the product schematic and MCU protocol once we begin; you return the completed template file (plus any panel resources) ready to import into the Tuya developer console. A quick screen-share walkthrough of the finished s...

    $153 Average bid
    $153 การประมูลเฉลี่ย
    66 คำเสนอราคา

    My day-to-day workload centres on Azure DevOps and Azure Active Directory, and many tasks must be streamlined through PowerShell automation. To keep projects moving smoothly I require reliable, on-call assistance from someone who already speaks the language of Az modules, AzureAD, and the DevOps REST APIs. Here’s how the collaboration will work: whenever a PowerShell challenge arises—be it refining an existing script, troubleshooting authentication, or wiring Azure DevOps actions to AAD permissions—I’ll share the scenario and the current code or pipeline YAML. I then expect concise guidance or an updated script that I can run confidently in production. Screen-sharing sessions are sometimes faster than threaded messages, so real-time pairing should be an option. De...

    $476 Average bid
    $476 การประมูลเฉลี่ย
    110 คำเสนอราคา

    I want a clean, mobile-friendly web application that combines a lightweight CRM with a secure authentication layer. Two user roles—Admin and regular User—should be able to sign in through OAuth and then see only the functions relevant to them. Core CRM needs: • Contact management that lets me create, edit, tag, and search contacts quickly. • Lead tracking that shows status, notes, and simple progress metrics. Beyond those essentials, the interface must remain fully responsive on phones, tablets, and desktops. The backend should be structured so future modules (analytics, reporting, etc.) can slot in without a rewrite, and I expect clear separation between frontend UI and API services. Deliverables • Source code with README covering setup, environment...

    $339 Average bid
    $339 การประมูลเฉลี่ย
    272 คำเสนอราคา
    Equipment GPS Asset Management System
    5 วัน left
    ยืนยันแล้ว

    Only bid if you can show me a demo of an existing system. I need a complete asset-management application focused on our field-deployed equipment. The solution must combine a GPS module for real-time location data with a robust back-office system that lets my team see where every unit is, how it is being used, and when it next needs attention. Core functionality I cannot compromise on: • Real-time GPS tracking for each asset • Maintenance scheduling with alerts when service windows are approaching or overdue • Asset inventory management so we can add, retire, or transfer equipment effortlessly • Usage analytics that turn raw movement and runtime data into actionable reports A clean web dashboard is essential; a lightweight companion mobile view would be a plus ...

    $7445 Average bid
    $7445 การประมูลเฉลี่ย
    130 คำเสนอราคา
    WhatsApp CRM Lead-Gen Chatbot
    5 วัน left
    ยืนยันแล้ว

    I want to turn every WhatsApp enquiry into a qualified lead that lands instantly inside my custom-built CRM, all while the conversation feels natural in both Hindi and English. The project covers the full cycle—from provisioning the WhatsApp Business API (or an equivalent on-premise gateway) on my own server, to writing the chatbot logic that asks the right questions, captures answers, and pushes them straight into the database. Key interactions the bot must handle include: • collecting customer contact details • updating lead status and internal notes • scheduling or amending appointments • posting account updates when something changes in our system • sending a quick property showcase (images, price, link) on request I will give you API access t...

    $111 Average bid
    $111 การประมูลเฉลี่ย
    22 คำเสนอราคา

    Summary Senior Software Engineer – Centric PLM Migration (C# / .NET) Duration: 6 months, full-time (~40 hrs/week) Location: Remote Overview: Fabletics is migrating its Product Lifecycle Management system from Centric PLM 7.2 → 8.0. A migration engine already exists in C# (.NET 4.7.2). This role is to take ownership of that codebase, stabilize it, and drive it to production. This is not a greenfield build. You will be working with: - real production data - live APIs with inconsistent behavior - complex dependency ordering across product hierarchies You should be comfortable stepping into an incomplete system and making it reliable. What You’ll Own: Migration Engine (C# / .NET 4.7.2) - Read from Centric 7.2 PostgreSQL HSE tables (ed_style, ...

    $11 / hr Average bid
    $11 / hr การประมูลเฉลี่ย
    70 คำเสนอราคา
    Pembayaran
    5 วัน left

    Saya mewakili bagian administrasi keuangan sekolah dan membutuhkan solusi pembayaran yang memusatkan seluruh transaksi di satu tempat. Pengguna utama nantinya hanyalah tim administrasi sekolah, jadi antarmuka harus fokus pada kemudahan input, pencarian, dan rekonsiliasi data pembayaran tanpa menu-menu yang tidak relevan bagi siswa atau orang tua. Ruang lingkup minimum yang saya perlukan: • Dashboard admin untuk membuat, memperbarui, dan menandai status pembayaran setiap murid. • Fitur pencatatan transaksi (manual maupun terhubung ke gateway pembayaran jika Anda merekomendasikan opsi efisien). • Laporan ringkas harian dan bulanan yang dapat di-export ke Excel/PDF. Saya terbuka apakah solusi ini berupa website, aplikasi desktop ringan, atau kombinasi web + mobile&m...

    $404 Average bid
    $404 การประมูลเฉลี่ย
    15 คำเสนอราคา

    I have a data scraping company and I work with music services. Basically, we collect metadata from various accounts that we generate from different countries and reconstruct current trends, genres, tempo, top artists, authors, algorithms, etc., and we sell them B2B to our clients (major record labels) like UNIVERSAL, SONY, and WARNER. We currently have a problem with Spotify; they are "killing" the accounts, and we are forced each time to generate new ones, wasting unnecessary bandwidth. We have identified that the problem occurs when using the storage credentials (auth_blob) to request the access token (bearer), which lasts 1 hour, so we need to get it often. Then they, based on the quality of the IP, take them down (but we use residential proxies, even Oxylabs, because yes, we...

    $17 / hr Average bid
    $17 / hr การประมูลเฉลี่ย
    23 คำเสนอราคา

    We are looking for an experienced Full Stack Developer to build and manage a custom CRM and lead distribution system. The ideal candidate should have hands-on experience in lead capture, ping/post integrations, and third-party form tracking, especially in performance marketing or lead generation environments. This is NOT a basic website job. Key Responsibilities: * Develop a custom CRM platform to capture, store, and manage leads from multiple web forms and sources * Build and maintain POST and Ping/Post integrations for real-time lead distribution to buyers & sellers * Integrate with third-party APIs, CRMs, and buyer systems for seamless lead delivery * Modify and optimize existing web forms (HTML/JS/PHP or similar) for better tracking and performance * Work with iframe-based embedd...

    $1086 Average bid
    $1086 การประมูลเฉลี่ย
    123 คำเสนอราคา

    Ich suche Unterstützung beim Aufbau eines webbasierten Ticket-Systems, das sowohl unsere Mitarbeiter als auch unsere Kunden intuitiv nutzen können. Die Lösung soll folgende Kernfunktionen abdecken: • Kanban-Ansicht: Jede Phase des Ticket-Workflows muss sich per Drag-and-Drop auf einem Board verschieben lassen. • Ticket-Erfassung: Neue Tickets werden wahlweise über ein responsives Webformular oder automatisch über einen Mail-Parser erzeugt. • Integrierter Chat: Zu jedem Ticket soll ein kontextbezogener Kommunikations-Thread mit @Mentions und Benachrichtigungen verfügbar sein. • Filesharing: Nutzer müssen Dokumente direkt am Ticket hochladen, versionieren und wieder herunterladen können. • Timetracking: Arbeitszeiten l...

    $18 / hr Average bid
    $18 / hr การประมูลเฉลี่ย
    95 คำเสนอราคา

    # CodeIgniter 4 Developer for Spec-Driven E-Commerce Rebuild (CI3 → CI4) ## Read this first **One individual freelancer. One contract. One outcome.** If you bid, you personally write every line of code and own this project from first commit to production. No agencies. No subcontracting. No "dedicated developer slots." No team assignments. Discovery = contract terminated without payment. If you represent an agency or a "team of one," this isn't for you. **Budget: 1.000–1.500 EUR fixed price for the complete project.** Payment on delivery of a working CI4 shop in production. No milestones, no partial payments, no upfront. --- ## What this project is Rebuilding a live German e-commerce shop (, custom-cut foam products — mattresses, cushions, a...

    $548 Average bid
    $548 การประมูลเฉลี่ย
    127 คำเสนอราคา

    GOOGLE PLACES API BID BRIEF See attached WHAT THIS PROJECT IS I need a freelancer to build an automated data collection tool using the Google Places API. The tool will search Google for attorneys by city and practice area, retrieve their Google star rating, review count, business name, address, phone number, website URL, and Google Maps URL, apply two qualification filters, rank the results, and export everything into a clean Google Sheet or CSV file. I need an automated, scalable tool that my VA can run with minimal technical knowledge. The tool does not need a fancy interface. A simple, reliable script or lightweight web app that my VA can operate by entering a city and practice area and clicking Run is all that is required. PROJECT AT A GLANCE Tool Purpose: Automate Google attorn...

    $257 Average bid
    $257 การประมูลเฉลี่ย
    52 คำเสนอราคา

    We are the Sudanese British Association (SBA), and we are seeking a top-tier, highly experienced Senior Developer or a small, elite agency to architect and build Phase 1 of our new digital platform. PLEASE READ CAREFULLY: This is NOT a standard brochure website. The SBA platform is a multi-layer digital ecosystem designed to serve as a national-level diaspora hub and a global knowledge network. It requires complex relational data architecture, strict role-based access control, and robust search capabilities. We have a comprehensive, developer-ready specification document (Database Schema, User Flows, UI/UX Structure) ready to share with the successful candidate. If you only build basic templates, this project is not for you. We need an architect who understands complex data relationship...

    $272 Average bid
    $272 การประมูลเฉลี่ย
    185 คำเสนอราคา

    We are looking for a talented Full-Stack Developer to build a high-end E-commerce platform for 3D printing services. Our goal is to offer a seamless experience where customers can order 3D printed parts (small and large scale) with custom finishes and professional painting. The project includes: - Intuitive & Eye-Catching Interface: A modern design focused on engineering and rapid prototyping, yet extremely user-friendly. - Instant Quote Engine: Customers must be able to upload their files (STL/STEP) and receive an automatic price based on: Part volume and dimensions. Material type (for both small and large format printing). Custom finishes and painting options. - Complexity Logic: T...

    $2449 Average bid
    $2449 การประมูลเฉลี่ย
    263 คำเสนอราคา
    Multi-Broker Order Management Web App
    5 วัน left
    ยืนยันแล้ว

    I require a web-based Order Management System that allows me to work with multiple brokers from a single screen. Its core features should include: robust order tracking, order punching, order management, money management, real-time data synchronization with every connected broker, and an in-built mechanism to share messages or notes with each broker without leaving the platform. My requirements are as follows: Brokers: Upstox, Alice Blue, Angel One, Dhan, Groww, Shoonya • A browser-accessible interface usable on any modern desktop or tablet. • Reliable, real-time feeds ensuring that positions, fills, and status updates appear instantly. • A backend architecture capable of scaling as new brokers are added, featuring clear REST or WebSocket APIs for future integrations. &bull...

    $55 Average bid
    $55 การประมูลเฉลี่ย
    36 คำเสนอราคา
    House Letting App & Web
    5 วัน left

    I’m building a modern, Spare-Room–style marketplace where landlords and tenants can connect effortlessly on iOS, Android, and the web. Before a single line of code ships, I need a polished, modern-and-trendy UI/UX that feels instantly familiar to everyday renters yet powerful enough for professional hosts. Core features to be designed and built: • User profiles for both landlords and tenants • Robust search and filtering for available properties, including city or specific-quarter targeting • In-app messaging so parties negotiate without leaving the platform • Transparent pricing display plus optional “Top Listing” adverts to boost visibility • Landlord verification workflow to maintain trust and safety • Comprehensive admi...

    $10 / hr Average bid
    $10 / hr การประมูลเฉลี่ย
    59 คำเสนอราคา

    Solana Copy Trading Platform Development I want to create a web platform similar to Mirrorlink, focusing on a clean, modern copy trading dashboard using Solana. The main goal is to enable users to connect their Solana wallet to automatically copy trades from selected leader wallets, Telegram channels or successful traders. Scope of work - Develop frontend with a dark modern theme featuring neon accents and clean cards. - Integrate a Connect Wallet button for platforms like Phantom, Solflare, Backpack. - Create a leaderboard/discover page listing top traders/wallets with stats such as PNL, win rate, number of copiers, AUM. - Design trader profiles with performance charts and trade history. - Implement a copy settings modal with options for amount to allocate (fixed SOL or %), slippage tol...

    $18 / hr Average bid
    $18 / hr การประมูลเฉลี่ย
    45 คำเสนอราคา
    .NET API & React Integration Sprint
    5 วัน left
    ยืนยันแล้ว

    I need an experienced full-stack developer who can jump in immediately and spend the next two days (now through 19 April) pairing live with my small team. We already have a React front-end scaffold and a partially built ASP.NET Core back-end; your job is to connect the dots so everything works seamlessly. We are exposing a RESTful API and must complete three core capabilities before the deadline: user authentication, data retrieval, and data submission. On the front end you will wire these endpoints into React components that include real-time form validation and a handful of interactive UI elements. You should be comfortable shaping clean TypeScript props, handling state with hooks or Redux, and writing concise Axios (or Fetch) calls that respect our existing folder structure. For the b...

    $253 Average bid
    $253 การประมูลเฉลี่ย
    47 คำเสนอราคา

    I need a trading bot that runs entirely in the cloud and connects to Zerodha Kite. My own quantitative strategy will drive all buy-and-sell decisions; the code simply has to translate those signals into live orders on Indian stocks, handle automated entry and exit, and apply sensible risk-management rules such as position sizing and stop-loss enforcement. The workflow I have in mind is straightforward: the strategy logic (which I will supply) publishes signals, the bot picks them up, places the orders through the Kite Connect API, then tracks each open position until the programmed exit condition or stop-loss is hit. All executions, P&L, and error events should be logged and viewable from a small web dashboard or other cloud-hosted interface so I can monitor activity from anywhere. D...

    $261 Average bid
    $261 การประมูลเฉลี่ย
    38 คำเสนอราคา

    Saya adalah seorang developer serbaguna dengan fokus kuat pada pembuatan solusi digital yang efisien, scalable, dan ramah pengguna. Keahlian utama saya meliputi pengembangan front-end dan back-end, integrasi API, serta manajemen database. Saya senang mengubah ide-ide kompleks menjadi aplikasi yang praktis, baik dalam membuat tampilan web yang responsif maupun mengoptimalkan performa sistem di balik layar. Saya memiliki pengalaman bekerja dengan teknologi dan framework modern, serta selalu bersemangat untuk mempelajari tools baru agar tetap relevan di industri yang terus berkembang. Kekuatan saya terletak pada kemampuan problem-solving, perhatian terhadap detail, dan konsistensi dalam menghasilkan pekerjaan berkualitas tinggi tepat waktu. Saya tertarik untuk mengerjakan proyek yang berkaita...

    $31000 Average bid
    $31000 การประมูลเฉลี่ย
    10 คำเสนอราคา
    WhatsApp Cloud API Remote Setup
    5 วัน left
    ยืนยันแล้ว

    I am ready to give you temporary access through AnyDesk or TeamViewer—whichever you find more convenient—to configure the WhatsApp Cloud API while keeping my credentials completely private. What is already in place: • An active Meta Developer account is set up and verified. • A dedicated phone number has been reserved exclusively for this WhatsApp Business instance. Your task is to guide the whole configuration live on the remote session, including: 1. Creating (or correctly adjusting) the Meta Developer App. 2. Linking the dedicated phone number to the WhatsApp Business Account inside Meta Business Suite. 3. Adding a System User with the required roles and permissions. 4. Generating a long-lived (Permanent) Access Token. At the end of the session I need these...

    $27 Average bid
    $27 การประมูลเฉลี่ย
    23 คำเสนอราคา

    Role Purpose Build, enhance, and scale production-grade web applications and platform modules that support enterprise AI workflows. This role exists for a hands-on engineer who can take ownership of features or entire applications — from design through implementation — with minimal supervision. The engineer will work closely with platform architects and AI engineers, but is expected to independently drive execution and make sound technical decisions. Key Outcomes This Role Owns • High-quality, production-ready application modules delivered on schedule • Clean, maintainable front-end and back-end codebases • Improved usability and performance of AI-enabled applications • Reduced dependency on constant design or engineering oversight Key Responsibilities &...

    $17 / hr Average bid
    $17 / hr การประมูลเฉลี่ย
    60 คำเสนอราคา

    I want to develop a mobile trading application focused on IPO and share trading with wallet, admin control, and support system. Core Features Required Authentication System Login using Phone Number + Password Forgot Password option (OTP based reset) Secure session management User Registration Phone Number Gmail ID Password Basic validation system Trading Features IPO Section View IPO listings Apply for IPO IPO status tracking Share Market Section Stock listing Buy/Sell functionality Portfolio tracking Wallet System Deposit via UPI / QR Code Admin can add/edit UPI & QR code from panel Withdraw request system Transaction history Admin Panel (Very Important) User Management View users Block/unblock users Withdrawal Control Approve / Reject withdrawal requests IP...

    $117 Average bid
    $117 การประมูลเฉลี่ย
    34 คำเสนอราคา

    Need help to build ride share phone app. I have the code but need to work on it review , develop For driver and rider.. 1. User & Identity Management • Rider registration and secure login workflow. • Driver registration and onboarding process. • OAuth2 + JWT authentication implementation. • Role-based access control (driver / rider / admin). • KYC verification workflow. • Password reset and multi-factor authentication (MFA). • Account suspension and deactivation controls. • Profile management module. • Secure document upload and verification pipeline. 2. Ride Lifecycle Management • Ride request creation module. • Real-time ride matching engine. • Driver accept / reject mechanism. • ETA calculation service. • Live ...

    $14 / hr Average bid
    $14 / hr การประมูลเฉลี่ย
    78 คำเสนอราคา

    Saya sedang mengerjakan aplikasi Python berbasis Flask dan membutuhkan panduan praktis agar proses coding berjalan lebih cepat dan rapi. Fokusnya hanya pada integrasi database: • Menyiapkan koneksi dan konfigurasi awal (SQLAlchemy atau solusi lain yang Anda rekomendasikan). • Merancang skema tabel sederhana, migration, serta relasi dasar. • Membuat contoh CRUD yang bersih dan mudah diperluas. • Memberi tips performa dan keamanan dasar agar query tetap efisien. Saya sudah familiar dengan Python dan Flask, namun butuh pendampingan singkat—bisa melalui sesi screen-sharing atau contoh kode terkomentar—hingga fungsi database berjalan stabil di proyek saya. Jika Anda berpengalaman memakai Flask untuk integrasi database, saya menantikan bantuan ringkas d...

    $454 Average bid
    $454 การประมูลเฉลี่ย
    14 คำเสนอราคา

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