Full-stack developer | Web applications, APIs & AI automation

I offer end-to-end development for web applications, SaaS products and internal tools: frontend, backend, databases and integrations. That can mean building a product from a brief, adding a customer portal to an existing system, or connecting document processing to a review-and-approval workflow.

I work through the whole user journey, including permissions, validation and what happens when something fails. n8n and AI are tools I use where they fit, alongside custom code.

I use AI-assisted development and communicate asynchronously by text. Before work starts, we agree the deliverables, price and how we’ll test and accept the result.

Public code: https://github.com/marchikx

Some projects are private; I can discuss relevant architecture where disclosure is permitted.

For project enquiries: marchuk0andrii@gmail.com

Tell me what you want to build or fix and what’s getting in the way. I’ll assess the scope and fit, then suggest a practical starting point. You don’t need a finished specification to get in touch.