Ohto Rainio
Team Tech Lead, Full Stack Software Developer at Fortum
Helsinki, Finland
Summary
👤
Senior🎓
Top SchoolOhto Rainio is a seasoned full stack software engineer and team tech lead based in Helsinki, combining over 20 years of web programming experience with a decade of formal industry roles. He currently leads customer web services at Fortum and has recent hands-on expertise in TypeScript, Node.js, React and SQL, along with experience as a Scrum Master and software architect. His background spans academia—teaching software engineering and agile methods—and industry leadership from CTO to HR director, giving him a rare blend of technical depth and people-focused delivery. Ohto’s track record includes building JEE platforms, mentoring developers, and contributing to EU research projects on IoT and mobile learning, reflecting both enterprise-grade system design and applied innovation. He’s pragmatic about roles and compensation, preferring clear expectations up front, and brings a knack for turning complex requirements into maintainable, production-ready services.
10 years of coding experience
15 years of employment as a software developer
Associate’s Degree, Teacher's pedagogical qualification, Excellent, Associate’s Degree, Teacher's pedagogical qualification, Excellent at Haaga-Helia School of Vocational Teacher EducationDeutsche Schule HelsinkiM. Sc, Computer Science, Industrial Engineering, M. Sc, Computer Science, Industrial Engineering at Teknillinen korkeakoulu-Tekniska högskolanComputer Software Engineering, Computer Software Engineering at Reaktor Academy Mentoring program
Github Skills (16)
pytorch9
deep-learning8
utilities8
typescript8
type-system8
image7
lodash7
image-viewer6
sdwebimage5
nodejs5
react4
react-native-image4
react-native4
progressive2
frame1
Programming languages (3)
Github contributions (5)
koodiohto/knn-recommender
Mar 2021 - Apr 2021
Contributions:3 releases, 64 pushes, 1 branch in 25 days
javakurssi/Tuntimateriaalit
Oct 2023 - Dec 2024
Contributions:34 pushes, 1 branch in 1 year 1 month
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