Jaakko Paju
Software Engineer at Wolt
Turku, Southwest Finland, Finland
Summary
🤩
Rockstar🎓
Top SchoolJaakko Paju is a software engineer with 7 years of experience, currently building production systems at Wolt and known for a functional-programming mindset and enthusiasm for event-driven, reactive architectures. He has delivered full-stack and real-time applications across Scala, C#, Java and TypeScript, with hands-on experience in ZIO, Kafka Streams, Azure, and cloud/DevOps tooling. An active open-source contributor, Jaakko has improved language support and text-object features in the popular helix editor—bringing practical language-awareness to a modern modal editor. Colleagues describe him as analytical and persistent, skilled at translating complex requirements into win-win solutions and collaborating across teams. Outside work he stays sharp through badminton, gym training and a serious interest in brewing great coffee, reflecting his mix of discipline and attention to craft.
8 years of coding experience
5 years of employment as a software developer
Master of Science in Technology, Software Engineering, Master of Science in Technology, Software Engineering at Turun yliopisto - University of Turku
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (11)
rust10
text-editor10
kakoune10
scala9
nix8
hcl7
sql6
yaml6
dockerfile5
prisma5
docker-compose5
Programming languages (9)
Github contributions (5)
helix-editor/helix
Dec 2023 - Dec 2025
A post-modern modal text editor.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:6 reviews, 18 PRs, 13 comments in 2 years
Contributions summary:Jaakko primarily contributed to the text editor's query language support and text object features. They added and improved support for various languages like HOCON, Scala, Nix, HCL, YAML, SQL, git-config, env, Dockerfile, docker-compose, and prisma. The user also focused on improving the codebase by fixing bugs, adding features, and enhancing existing functionality such as adding CSV language support.
text-editorvimrustkakoune
jpaju/dotfiles
Apr 2023 - Jul 2026
My dotfiles/Nix configuration
Contributions:6 PRs, 373 pushes, 10 branches in 3 years 3 months
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