Teemu Kokkonen
Competence Lead Of Python at Wolt
Helsinki, Mainland Finland
Summary
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Rockstar🎓
Top SchoolTeemu Kokkonen is a seasoned Python backend engineer and current Competence Lead of Python at Wolt, bringing 12 years of experience building customer-facing features and growth/marketing tooling. He specializes in Python, Flask, MongoDB and PostgreSQL, and has a strong track record of shipping reliable backend services in product-driven companies. Teemu is also an active open-source maintainer—his pytest-sugar plugin (nearly 1k stars) and contributions to Stellar demonstrate a knack for improving developer experience. With a Master's focus in Big Data & Large Scale Computing from Aalto University, he combines data-minded architecture with pragmatic engineering. Known for transitioning from full‑stack roles into technical leadership, he blends hands‑on coding, testing discipline, and mentorship to scale teams and systems.
12 years of coding experience
12 years of employment as a software developer
Master's degree Big Data & Large Scale Computing, Master's degree Big Data & Large Scale Computing at Aalto University
English, Finnish
Github Skills (4)
pytest10
plugin10
python10
testing10
Programming languages (6)
Github contributions (5)
Teemu/pytest-sugar
Aug 2013 - Nov 2022
a plugin for py.test that changes the default look and feel of py.test (e.g. progressbar, show tests that fail instantly)
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:6 reviews, 227 commits, 127 PRs in 9 years 4 months
Contributions summary:Teemu's commits primarily focus on enhancing the pytest-sugar plugin. They started with the initial implementation of the plugin, adding features like instafail and a progress bar. Subsequent contributions involved updating the README, modifying contributors, fixing tests, updating versions and refactoring the codebase, as well as addressing bug fixes. The user also demonstrates an understanding of testing practices by implementing and maintaining tests for the plugin.
lookpythonlook-and-feeltestingfail
Teemu/flask-color
Jan 2014 - Aug 2014
Contributions:11 commits, 1 comment in 6 months
pythonweb-serverflaskdebuggingbuilt-in
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