Tommi Kärkäs
Software Engineering Team Lead at Wolt
Helsinki, Finland
Summary
👤
Senior🎓
Top SchoolTommi Kärkäs is a software engineering team lead based in Helsinki with about a decade of hands-on experience blending technical delivery, Agile leadership, and product-focused project management. Currently leading a fintech-oriented engineering team at Wolt, he drives ownership and delivery of payment risk and fraud-reduction systems using a polyglot stack (Kotlin, Scala, Kafka, Python, Kubernetes). He’s equally comfortable coaching teams in Lean/Agile practices as he is diving into technical design and coding, having held roles from developer and scrum master to program and service manager. His background includes deep experience in geospatial IT and mobility-as-a-service domains, which informs a pragmatic approach to complex data and platform problems. Sustainability and societal impact are core motivators, and he often thrives in roles that require both managerial breadth and technical depth.
9 years of coding experience
10 years of employment as a software developer
Master’s Degree, Computer Science, Master’s Degree, Computer Science at Aalto-yliopisto
English, Finnish, Swedish, Spanish
Github Skills (8)
slack-bot8
slack5
invoice1
javascript1
matching1
credit1
nodejs1
credit-card1
Programming languages (1)
Github contributions (5)
tommikarkas/cowsay-slackbot
Apr 2017 - Oct 2022
Cowsay bot for slack
Contributions:2 reviews, 22 commits, 7 PRs in 5 years 6 months
slackbotcowsayslack-bot
tommikarkas/python-gis-playground
Oct 2022 - Jan 2025
Personal Python playground for GIS libraries
Contributions:1 PR, 6 pushes, 1 branch in 2 years 3 months
pythongisplayground
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