Kenny Heinonen
Senior Software Developer at Fondion
Helsinki Metropolitan Area Finland
Summary
👤
Senior🎓
Top SchoolKenny Heinonen is a Senior Software Developer based in the Helsinki area with 13 years of experience building full-stack web applications using React, Vue, Django, JavaScript and Python. He combines a pragmatic focus on code quality and simplicity with an eye for visually pleasing, user-centric interfaces, and has shipped features across startups and product teams in real estate, digital signature services, and education research. Comfortable across stacks, Kenny has also worked with Node.js, TypeScript, Java/Spring and Rails, and has a track record of maintaining and evolving production systems. At the University of Helsinki he contributed to education tooling that visualized student programming workflows, showing an interest in developer-facing and research-oriented software. He enjoys mentoring colleagues and sharing knowledge, prioritizing readable, maintainable solutions that speed team productivity. With an M.Sc. in Computer Science, he currently applies his cross-disciplinary experience to senior engineering work at Fondion.
13 years of coding experience
10 years of employment as a software developer
Master of Science (M.Sc.) Computer Science, Master of Science (M.Sc.) Computer Science at University of Helsinki
Finnish, English, Swedish
Github Skills (61)
netbeans-plugin10
pane8
multiprocessing8
msw8
react8
react-query8
science8
reader8
indexeddb8
specification8
offline-storage8
netbeans8
swagger8
storage8
pdf8
Programming languages (7)
Github contributions (5)
kennyhei/react-formik-step-wizard
Sep 2023 - Mar 2025
React multistep wizard library with Formik integration
Contributions:5 releases, 87 PRs, 233 pushes in 1 year 5 months
kennyhei/koulutettuninja
Feb 2021 - Jun 2024
Home page @ ninjamarttinen.fi
Contributions:3 PRs, 114 pushes, 4 branches in 3 years 3 months
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