Serhii Kostel
Senior Software Developer at Mindpeak GmbH
Hamburg, Germany
Summary
👤
Senior🎓
Top SchoolSerhii Kostel is a Senior Software Developer based in Hamburg with 11 years of experience building backend systems, computer vision pipelines and embedded software across startups and research environments. He blends pragmatic Python/asyncio expertise (aiohttp testing, microservices, Django/Flask) with hands-on ML/CV engineering using TensorFlow, OpenCV and streaming tools, having designed face-recognition and retail CV products. A track record of technical leadership—from team lead roles to senior developer at Mindpeak—pairs with low-level firmware and systems roots in embedded C/C++, giving him a rare full-stack-to-edge perspective. Serhii is an avid problem-solver who sharpens his craft through algorithmic challenges and learning new languages like Go and Elixir, and contributes to notable open-source projects by hardening aiohttp’s proxy functionality.
11 years of coding experience
12 years of employment as a software developer
Bachelor's degree, Electronic systems, 4.5, Bachelor's degree, Electronic systems, 4.5 at Sumy State University
Украинский, Английский, Російська
Stackoverflow
176reputation
6kreached
3answers
0questions
Github Skills (12)
aiohttp10
testing10
http10
proxy10
pytest10
python10
asyncio10
http-client9
python-requests6
algorithm6
selenium6
regex6
Programming languages (4)
Github contributions (5)
aio-libs/aiohttp
Nov 2016 - Dec 2016
Asynchronous HTTP client/server framework for asyncio and Python
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:5 commits, 2 PRs, 4 comments in 18 days
Contributions summary:Serhii primarily contributed to the testing of the `aiohttp` library's proxy functionality. Their work involved writing and expanding functional tests to cover various proxy scenarios, including HTTP and HTTPS connections, authentication, and error handling. They added tests for raw host support, and also wrote tests related to proxy acquired cleanup and multi-connection limits. These tests help ensure the robustness and reliability of `aiohttp`'s proxy capabilities.
pythonasynchronousasynciohttp-clientclient-server
kserhii/money-parser
Dec 2017 - Apr 2018
Price and currency parsing utility
Contributions:20 commits, 1 PR, 14 pushes in 3 months
pythoncurrency-converterparsingcurrencyscrapping
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