Oskari Heinonen
Full Stack Developer at Tmi Oskari Heinonen
Turku, Mainland Finland
Summary
👤
Senior🎓
Top SchoolOskari Heinonen is a Full Stack JavaScript developer based in Turku, Finland, with over 10 years building high-performance, accessible web applications using React, Node.js and GraphQL within decoupled architectures. He combines hands-on engineering with an entrepreneurial mindset—running his own consultancy since 2022 after six years delivering full-stack solutions at Wunder. His background spans frontend craftsmanship (HTML5, CSS3, AngularJS) to backend services and API design, informed by early work in design, level design and 3D modeling as a co-founder of a game studio. Oskari thrives on challenging projects and continuous learning, prioritizing usability and performance in production systems. He brings a practical, multidisciplinary perspective that helps bridge product, design and engineering for user-friendly decoupled systems.
10 years of coding experience
10 years of employment as a software developer
Ylioppilas, Ylioppilas at Raision LukioBachelor’s Degree, Engineering, IT, Bachelor’s Degree, Engineering, IT at Turku University of Applied Sciences
Finnish, English, Swedish
Github Skills (16)
tween6
animation6
animate6
physics5
interaction5
css5
svg4
easing4
popmotion3
react3
nextjs2
typescript2
starter-kit2
vagrant1
ansible-role1
Programming languages (2)
Github contributions (5)
osheinonen/osheinonen.github.io
Nov 2015 - May 2022
Contributions:19 pushes, 1 branch in 6 years 6 months
osheinonen/qmk_firmware
Nov 2019 - Dec 2021
Open-source keyboard firmware for Atmel AVR and Arm USB families
Contributions:2 PRs, 3 pushes in 2 years 1 month
rp2040nrf52840firmwareavratmel
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