Joonas Krohn
Senior Software Designer at Joonas Krohn Tmi
Turku, Southwest Finland, Finland
Summary
👤
Senior🎓
Top SchoolJoonas Krohn is a Senior Software Designer based in Turku, Finland with nine years of professional experience transitioning from a trained music teacher to a full-time developer since 2018. He builds enterprise Java/Spring systems with a specialty in complex batch jobs, while also delivering native iOS apps in Swift and web frontends and APIs with React and Node.js (TypeScript/JavaScript). At Accenture and Solita he has designed and implemented critical backend processes for large-scale insurance and enterprise projects, bringing operational reliability to invoicing, premium calculation and termination workflows. His background in music education and ongoing freelance gigs inform a collaborative, disciplined approach to engineering and product design, with a knack for translating domain complexity into clear, testable solutions. Equally comfortable in backend architecture and mobile UX, he blends attention to detail from performance-critical batch processing with a developer-first focus on maintainability and user experience.
8 years of coding experience
4 years of employment as a software developer
Master's degree, Music Teacher Education, Master's degree, Music Teacher Education at University of the Arts Helsinki
Finnish, English, Swedish
Github Skills (29)
docker10
clojure10
clojurescript10
application-profile7
ckan6
ats6
data-services6
schema5
metadata4
mobility4
crud4
open-data3
sql3
railway3
metadata-management3
Programming languages (7)
Github contributions (5)
Joonas-M-S/harja
Jan 2021 - Jun 2021
Väylän Harja-projekti
Contributions:9 pushes, 1 branch in 4 months
tmfg/digitraffic-catalog
Dec 2024 - Feb 2025
Digitraffic data catalog source code repository
Contributions:6 pushes, 1 branch in 1 month
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.