I will build and integrate a production grade python web app

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Valentin S

About this gig

Your API needs to work correctly the first time, handle real traffic, and not fall apart when you add the next feature. That's the standard I build to 12 years of commercial Python, including HTTP API development and backend systems


What I can build for you:

- Web application in Django, Flask, or FastAPI

- Authentication: JWT, OAuth, SSO/SAML

- Database design and queries PostgreSQL, MySQL, MongoDB, Redis for caching

- Integration with third-party services

- Background/async jobs for anything that shouldn't block a request

- Clean, tested code with API documentation (OpenAPI/Swagger) not a script that only makes sense to me


I've designed backend architecture from scratch for a payment platform, led the team building it, and have supported production systems handling real customer traffic so I write code with an eye toward "what breaks this in six months," not just "does this pass the demo."


Tell me what you're building and I'll tell you honestly whether your scope fits Basic/Standard/Premium below, or needs a custom quote.

Get to know Valentin S

Valentin S

Engineering Team Leader

  • FromUkraine
  • Member sinceJul 2026
  • Languages

    English, Russian, Ukrainian
I am an experienced Engineering Team Leader and Software Engineer with a strong background in Java, Python, and MySQL. Throughout my career at companies like DataRobot and imonomy, I have led R&D teams and developed complex software solutions. I specialize in technical consultancy and engineering leadership, focusing on delivering high-quality scalable systems.