ผู้ดูแลระบบ Jobs

I want a complete, ready-to-use SMTP server that lives on my Windows machine and lets me push out high-volume campaigns without the usual caps yet still places messages in the inbox, not the spam folder. Please build, configure, and fine-tune everything so the service runs smoothly with no username-and-password layer (that requirement is intentional because the environment is fully firewalled on our side). The core of the job is the full installation and optimisation of the SMTP engine you feel is best for Windows—MailEnable, hMailServer, PowerMTA, or another proven option are all fine as long as deliverability is strong. I also need the surrounding essentials: correct PTR, SPF, DKIM, and DMARC records, IP warming guidance, plus any queue-management or throttling tweaks that help ke...

We are a boutique managed IT services company (MSP) based in the Greater Toronto Area, supporting 100+ business clients across a wide range of industries. We're expanding our after-hours coverage and need a remote L1 technician to handle overnight technical escalations. Scope of work Troubleshoot server-related issues: network drive/share connectivity, server errors Provide remote workstation support, including VPN connectivity assistance Support client production applications at the access/login/licensing level — AutoCAD, SketchUp, Bluebeam Revu, Adobe Creative Cloud, Blender (not application training or how-to guidance) Triage and begin remote work within a 2-hour response window on escalated issues Escalate anything beyond L1 scope to our on-call senior technicians Handle b...

We are an MSP based in the Greater Toronto Area, supporting 100+ business clients. We're hiring a remote L1 technician for overnight technical support, 9:00 PM–5:00 AM ET (weekends included). What you'll do Troubleshoot server/network drive connectivity issues and VPN access Provide remote workstation support Support client apps at the access/login/licensing level (AutoCAD, SketchUp, Bluebeam, Adobe CC, Blender) — not training or how-to guidance Handle basic ticket intake from 9-10 PM ET before our overnight admin comes online; admin handles intake/logging after that Triage within a 2-hour response window; escalate beyond L1 to on-call senior techs Required Solid L1 troubleshooting (networking, VPN, remote desktop) Comfortable working independently overnight Clear...

Objectives • Obtain an independent, manual penetration test to validate the security of the Selcomm platform and the isolation of customer environments. • Produce a formal report (with a redactable version) to evidence security assurance to enterprise customers. Environment (context) Solution: Selcomm billing platform — dedicated (non-cloud) software; virtualised Windows + Linux/Informix Hosting: Production: NTT data centre. Access/interfaces: Per-customer dedicated VLANs; site-to-site VPN; SSL/TLS and sFTP. No wireless Target list / scope (please price individually and combined) • A — External infrastructure: internet-facing VPN endpoint(s), any public web/portal, mail gateway. • B — Web application: authenticated & unauthenticated test of the Se...

I’m drowning in junk that keeps slipping into the work mailboxes on my own domain, so I need an email-security specialist to tighten things up fast. The accounts are not on Gmail or Outlook; they’re hosted directly on my domain, and right now the basic filtering isn’t doing the job. Here’s what I’m after: audit the existing server set-up, update any DNS records (MX, SPF, DKIM, DMARC), tune or replace the current spam-filter rules, and leave me with a clean inbox that still accepts every legitimate message. You’ll get temporary access to the control panel and DNS so you can: • Inspect mail logs and current filter scores • Correct or add SPF, DKIM and DMARC records • Configure SpamAssassin (or a similar tool) and fine-tune thresholds ...

I run a small but growing company whose staff is scattered across several time zones. Because we have no physical headquarters, every employee depends on a reliable, secure technology stack to stay productive. I need an experienced IT systems manager who can step in and own that environment from end to end. Day-to-day you will: • Monitor and maintain all user workstations, keeping operating systems, apps and security patches current. • Administer accounts, permissions and backups in our cloud services (you’ll help me choose or streamline them where necessary). • Act as first-line support for the team: diagnose connection issues, resolve software conflicts and keep Zoom—our primary meeting platform—running smoothly. • Document processes so onboar...

Our company mailbox on an Ionos-hosted server is being flooded with unwanted messages and I need an expert to stop them quickly and cleanly. The mail flow passes through Ionos before it reaches Microsoft Outlook on the desktop, so whatever you implement must sit at server level and not rely on individual client rules. What I already know • The problem is on the company email server, not a personal inbox. • We run on the Ionos mail platform (not Exchange or Google). • Spam ranges from phishing attempts to the usual marketing clutter—if it’s malicious, I want it blocked; if it’s legitimate but irrelevant, I want it routed to junk automatically. What I’m hoping you will do 1. Audit current MX, SPF, DKIM and DMARC records, then correct or harden...

I'm seeking an experienced network engineer with Wireless ISP (WISP) expertise for a rural network setup. The project involves: - Network design and planning - Installation and configuration of routers, switches, wireless access points, antennas, and towers - Network monitoring and troubleshooting Ideal Skills and Experience: - Proven experience in WISP projects - Strong knowledge of network equipment and rural deployment challenges - Excellent troubleshooting skills - Ability to work independently and manage project timelines

I need hands-on hardware support for a group of office desktops and laptops. The priority is hardware support, and the machines are showing a mix of performance slow-downs, intermittent hardware failures, stubborn software-installation problems, and the occasional network conflict that boots them off our LAN. You’ll be expected to run full diagnostics, identify failing components, repair or replace them, install the required software, and confirm that each computer rejoins the network cleanly. Experience with Windows 10/11, BIOS utilities, imaging tools such as Clonezilla or MDT, and basic networking commands will make the work go faster. Deliverables • A brief troubleshooting report for every affected machine • Completed repairs or documented recommendations when repla...

I’m moving a bare-metal server at Hetzner over to a fully virtualized environment and want the foundation built right the first time. Here’s what I need: • Clean installation of the latest stable ESXi on the Hetzner host, followed by all current updates and patches. • Basic performance tuning so the hypervisor is ready for production workloads (CPU scheduling, datastore alignment, SSD caching if available, etc.). • Creation of well-structured subnets for multiple tenant VMs. • Firewall rules and protection logic on my MikroTik RouterOS appliance that will sit in front of the ESXi host, including NAT, filter, and basic DDoS hardening. I'm awaiting to order the server and necessary requirements for the setup; you will have to provide all require...

I need a specialist to configure and verify DNS settings on my domain to ensure seamless integration with three SMTP providers: AWS, MailGun, and Brevo. The tasks include setting up SPF, DKIM, and DMARC records, ensuring all configurations are correct, and conducting thorough testing to confirm functionality across all providers. I am facing issues with domain verification due to incorrect DNS details. I need assistance in resolving this and ensuring proper configuration for AWS, MailGun, and Brevo.

I need assistance connecting my Wi-Fi laser printer to a Windows desktop. Requirements: - Experience with Windows OS - Knowledge of Wi-Fi printer setup - Troubleshooting skills for connection issues Ideal Skills: - Familiarity with network settings - Previous experience with printer installations

I need to replace an old gigabit switch and access point with a Ubiquiti Unifi Access Point at my home in Sydney, Australia. Requirements: - Install Ubiquiti Unifi Access Point - Setup mesh network Ideal Skills and Experience: - Experience with Ubiquiti products - Networking knowledge - Detail-oriented and reliable Please provide detailed project proposals.

We are a 20-person company that now needs a dedicated professional to own our entire IT environment. The core of the job is keeping everyday operations smooth while steadily raising our security posture. We are looking for someone who uses modern tools, ideally with AI, to help automate IT workflows. This is not a full time role. It is for 10-15 hours per week. Scope of responsibility • Devices – enrolment, patching, inventory and lifecycle management for laptops and mobiles. • Google Workspace administration – user provisioning, group policies, shared drives, email routing and licence optimisation. • Identity & access management – maintain SSO, MFA, least-privilege roles and onboarding/off-boarding processes. • Security awaren...

I need help with my laptop to check and delete unauthorized access. Ideal skills and experience: - Experience with security and access management - Familiarity with various operating systems - Ability to work efficiently and securely

I need a VPN setup to enable secure remote work for my employees. The VPN should be both Site-to-Site and Remote Access. Requirements: - Connects securely: Desktops, Laptops, and Servers - Standard encryption Ideal Skills and Experience: - Proven VPN setup experience - Familiarity with various encryption protocols - Ability to configure for multiple device connectivity

I'm having trouble connecting my V39 scanner to my desktop via USB. The error message states "No device found." I'd like someone who can diagnose and fix this issue. Ideal skills and experience include: - Experience with V39 scanners - Proficiency in troubleshooting USB connection issues - Familiarity with Windows, MacOS, or Linux (please specify your OS)

My e-commerce site is currently under an active DDoS attack. No protective measures are in place yet, and service interruptions are starting to hurt sales and SEO. I have full administrative access to the Nginx server, so any configuration changes or security software installs can be done immediately. I need an experienced DDoS mitigation specialist to: • Restore site availability quickly by filtering malicious traffic and keeping legitimate customers online • Harden the existing Nginx stack with rate-limiting, connection throttling, and optimized firewall rules • Configure and fine-tune an external protection layer (e.g., Cloudflare, AWS Shield, or comparable scrubbing/WAF service) • Deliver a brief post-incident report outlining what was done, residual risks,...

We are looking for an experienced Amazon Linux 2023 Corporate Trainer to deliver instructor-led training for our client. Training Duration 16 Hours Mode: Virtual (Live Instructor-Led) Target Audience Linux Administrators Red Hat Administrators DevOps Engineers Cloud Engineers System Administrators migrating workloads to AWS Training Scope The trainer should have strong hands-on experience in the following areas: Amazon Linux 2023 Architecture & Features Amazon Linux vs SUSE Linux Comparison Deploying Amazon Linux on AWS EC2 EC2, IAM Roles, IMDSv2, Cloud-Init & User Data Amazon Linux Administration DNF Package Management Security (SELinux, IAM Integration, Security Updates) AWS Storage (EBS, LVM, Snapshots & Encryption) Linux & AWS Networking (VPC, Subnets, Route Tables, ...

I need an experienced hands-on engineer to spend a day at our client’s site, acting as my eyes and hands while we finalize a network refresh. The job centres on Cisco routing and switching gear, but you will also touch the firewalls and wireless access points in the same rack. What you will do on site • Check in with the local contact, then perform a visual inspection of every router, switch, firewall and AP in the rack, confirming power, cabling, and link lights. • Connect via console for the health checks defined in my step-by-step procedure (I will send this playbook in advance). • Be on standby for possible device installs or re-mounts—final scope is still being confirmed, so bring basic mounting tools just in case. • Patch, label and tidy any c...

I’m overhauling an established e-commerce site and need an end-to-end UX package that takes me from insight to clickable prototype. First, I want a rigorous user research report aimed specifically at middle-aged adults (36-55). This should uncover pain points, motivations, and shopping behaviours unique to that cohort. Next, compile a competitor analysis that looks at direct competitors, indirect competitors, and wider industry leaders. I’m interested in what they do well, where they fall short, and what opportunities we can seize. With those findings in hand, translate them into updated wireframes that cover every critical step of the shopping journey: product browsing and search, the checkout process, and user account management. Start with low-fidelity sketches, validate ...

I need an expert to install the latest versions of WAMPServer and PHPlist on my Windows 11 laptop via TeamViewer. Requirements: - Experience with WAMPServer and PHPlist installations - Proficient in TeamViewer for remote assistance - Windows 11 familiarity is a plus Please ensure a smooth and error-free setup.

I need a production-ready SMTP server that can reliably push 3,000+ messages every day while keeping at least 90 % of them in the primary inbox, not the spam folder. The environment must be properly authenticated with DKIM, SPF, and DMARC, and every connection secured over SSL/TLS. I will restrict access to approved addresses only, so IP whitelisting and individual user log-ins are mandatory. Here is how I picture the engagement: • You install and configure the MTA (Postfix, Exim, PowerMTA or similar—happy to hear your recommendation) on a VPS or dedicated machine I will provision. • You generate and publish the DKIM keys, set the SPF record, and create a DMARC policy that balances protection with delivery. • TLS certificates are installed, and the server listens...

I need an Azure-savvy engineer to take a close look at my on-prem / Azure hybrid environment and squeeze cost and every bit of performance out of it for both local and remote users. Current landscape • One Azure Virtual Desktop host that also serves one application. • Two on-prem Hyper-V app servers; the same app is reached through mapped drives controlled by GPO. • Connection between sites is a site-to-site VPN. Scope of work Identify latency, bandwidth, or routing bottlenecks and quantify their impact. revisiting GPO drive-map strategy, or enabling AVD FSLogix / profile Fix the intermittent GPO processing issues Validate that speed of data access, reliability, and user experience all show measurable gains. 5. Document and hand over a clear plan with roll bac...

I’m looking for a seasoned DevOps mind to streamline my GitHub-based CI/CD workflow and tighten the security of a handful of Linux servers. On the CI/CD side, everything lives in GitLab. I need practical guidance on structuring ., optimising runner usage, and setting up automated staging-to-production deployments with roll-backs and clear version tagging. If you have shortcuts for caching, parallel jobs, or environment-specific variables, even better. The servers behind those pipelines also need attention. Your job is to harden them—from SSH policies and firewall rules to OS-level patching and intrusion detection—so they’re production-ready once the pipeline pushes new code. Deliverables • A working, documented GitLab CI pipeline that builds, tests, and depl...

I’m looking for an experienced network and system administrator to take full ownership of our small-to-mid-sized office network. The environment is being refreshed from the ground up, so I need help at every stage: • Hardware deployment and configuration – routers, switches, wireless access points, and firewalls all need clean, standards-based builds. VLAN design, IP addressing, DHCP/DNS, and basic cabling checks are part of the work. • Performance monitoring – once the gear is live, I want continuous visibility. Please integrate the hardware into the monitoring stack of your choice (SolarWinds, PRTG, Zabbix, or similar), set sensible alerts, and give me a weekly health summary during the first month. • Security hardening – enforce best-practi...

My outbound mail reaches Gmail and every other provider perfectly, yet anything sent to Outlook, Hotmail or (Microsoft) still heads straight to junk or they don’t get it at all . The domain is hosted on delicated server from and I have full access to all DNS and server-side settings, so making technical changes is not an issue. SPF, DKIM and DMARC are already correctly published and passing; Microsoft support tickets have been opened more than once, and I have tweaked header settings, sending patterns and content, but the problem always returns. I want a definitive fix that keeps the domain off Microsoft’s spam list for good, not a temporary workaround. Here is what I need from you: • A comprehensive audit of my current configuration, including header analysis, send...