Janne Sinivirta
Platform Engineering Lead
Helsinki, Finland
Summary
🤩
Rockstar🎓
Top SchoolJanne Sinivirta is a hands-on platform engineering lead and software architect based in Helsinki with over 25 years in the industry and 14 years in senior roles, specializing in developer experience, cloud automation, and reproducible infrastructure as code. He has built and led teams across regulated, consumer-scale and high-reliability domains—from healthcare and payments to aviation and gaming—bridging "how we build" with "what we run" through coaching, CI/CD, and production optimizations. Pragmatic and code-first, Janne has delivered end-to-end platforms including a crypto trading infrastructure and contributed refactorings to the popular open-source freqtrade bot to improve maintainability and trading logic. Known for turning developer quality-of-life improvements into measurable velocity gains, he combines deep systems know-how with experience scaling orgs and processes in both startups and consultancy environments. A programming-language enthusiast and active practitioner, he pairs technical breadth with a habit of shipping practical, auditable solutions.
14 years of coding experience
23 years of employment as a software developer
MSc. (Tech) Communications Technology IT, MSc. (Tech) Communications Technology IT at Teknillinen korkeakoulu-Tekniska högskolan
Finnish, English
Github Skills (6)
cryptocurrency10
python10
algorithmic-trading10
trading-bot10
refactoring9
json8
Programming languages (17)
Github contributions (5)
freqtrade/freqtrade
Aug 2017 - Aug 2018
Free, open source crypto trading bot
Role in this project:
Back-end Developer
Back-end DeveloperContributions:555 commits, 253 PRs, 328 pushes in 11 months
Contributions summary:Janne primarily focused on refactoring and improving the code quality and maintainability of the trading bot. Their contributions included renaming variables and constants, fixing indentation issues, and addressing potential errors through the use of exception handling. They also made changes to core functionalities by extracting and refactoring methods related to selling strategies and stoploss.
telegram-botalgorithmic-tradingpythonfreqtradetrading-bot
ThoughtWorksInc/daffy
Jan 2021 - Apr 2021
Function decorators for Pandas Dataframe column name and data type validation
Contributions:69 commits, 29 PRs, 60 pushes in 2 months
polarspythondecoratorsdataframesvalidation
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