Steinn Sigurdarson
Platform Team Lead & Co-Founder
Reykjavik, Capital Region, Iceland
Summary
👤
SeniorSteinn Sigurdarson is a pragmatic technologist and co-founder with 12 years of experience building and leading platform teams that deliver reliable, scalable backend systems. As Platform Team Lead at GRID he architected a monolithic Python backend using Clean Architecture, Kafka-based work streams, Docker and Kubernetes on AWS, while championing strong typing and high test coverage to sustain rapid iteration. Previously a CTO and Director of Engineering, he scaled infrastructure and teams through high-growth events (notably at QuizUp) and introduced service mesh and container practices to improve deployment speed and reliability. He contributes to open-source testing tools—enhancing vcrpy’s aiohttp streaming support—bringing real-world integration and QA insight to public libraries. Based in Reykjavik, he combines hands-on engineering across infra, backend and frontend with humane leadership and an emphasis on developer velocity. Outside work he trains Judo, rides eMTB and prioritizes family time, reflecting a disciplined but balanced approach to life and work.
12 years of coding experience
15 years of employment as a software developer
Icelandic, English, Danish, German
Stackoverflow
21reputation
95reached
1answer
0questions
Github Skills (10)
aiohttp10
http10
pytest10
python10
mocking10
testing10
test-framework9
google-sheets6
google-apps-script6
addon6
Programming languages (10)
Github contributions (5)
kevin1024/vcrpy
Jun 2019 - Jun 2019
Automatically mock your HTTP interactions to simplify and speed up testing
Role in this project:
Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:5 commits, 1 PR, 1 comment in 24 days
Contributions summary:Steinn primarily contributed to testing and enhancing the `vcrpy` library, which mocks HTTP interactions. They added functionality to the `MockClientResponse` for handling content streams, enabling better testing of aiohttp integrations. The user implemented and modified tests, specifically integrating tests for `aiohttp` and utilizing the `stream` output option to test the `MockStream` interface. These changes improved the library's compatibility with aiohttp and provided enhanced testing coverage for streaming data.
pythonmock-serverspeedfunctional-testingtesting
steinnes/content-size-limit-asgi
Jun 2019 - Nov 2020
An ASGI middleware which raises an exception if the request body exceeds a limit
Contributions:27 commits, 13 PRs, 15 pushes in 1 year 5 months
apiasgibodyrequestmiddleware
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