Joni Käki-mäkelä
Senior Software Engineer at Trail Openers Oy
Helsinki, Finland
Summary
👤
Senior🎓
Top SchoolJoni Käki-mäkelä is a Senior Software Engineer based in Helsinki with 12 years of experience building cloud-native web applications, game tooling, and close-to-metal systems. He holds an MSc in Computer Science and has worked across multinational teams and microservice architectures, frequently using web stacks (TypeScript, Node.js, C#, ASP.NET Core) as well as languages like Rust, C++, Java and functional JVM languages. His recent roles span financial asset management portals (Elm frontends, Kubernetes) to low-level Rust proofs-of-concept for policy-based access control and shared game libraries for Unity, showing a rare blend of backend, frontend and systems expertise. Comfortable leading parts of the stack, he also brings hands-on experience deploying and operating services on AWS and Kubernetes. Colleagues rely on him to bridge product needs and engineering realities, and his personal passion for game development often drives creative, performance-minded solutions.
12 years of coding experience
13 years of employment as a software developer
Master of Science Computer Science, Master of Science Computer Science at University of Helsinki
Finnish, English, Swedish
Github Skills (77)
graph-algorithms10
code-generation10
faker10
codegen10
orval10
compiler10
rust10
open-api-v310
react-query10
msw10
rust-lang9
polymer9
yaml9
angular9
swagger9
Programming languages (9)
Github contributions (5)
jonimake/arma-ccip
Apr 2014 - Jun 2014
Contributions:46 commits in 1 month
jonimake/CelestialSphere
Mar 2021 - Oct 2021
Contributions:1 release, 17 commits, 13 pushes in 7 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.