Hi Sir/Madam,
I have been working on sharepoint for 7 years more. I have experience sharepoint installation, configuration, development and integration with 3rd party tools.
I have developed many kind of solution that include webpart, timerjob, event handler, workflow. I can develop the workflow via sharepoint designer, visual studio. If your environment in the cloud, I can use the Microsoft flow to design your workflow.
Please give me some more details and let me know if you have any question.