Sander Hahn
Owner at appcraft.nl
Hoofddorp, North Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolSander Hahn is a pragmatic senior software engineer and architect with 14 years of experience designing and building scalable, maintainable SaaS backends using Go, TypeScript and PostgreSQL. As owner of appcraft.nl and a current engineer at KPN, he moves product ideas to production—leading greenfield architectures, modernizing legacy stacks, and owning technical direction. He’s comfortable across stacks (Elixir/Phoenix, Rails, FastAPI, ServiceNow) and has hands-on provisioning and CI/CD experience in Azure, Jenkins and Bicep for enterprise networking and VoIP platforms. An active open-source contributor, he improved TypeScript stores and type safety in the popular Svelte project, showing attention to developer ergonomics as well as runtime performance. Known for clear communication and a focus on engineering growth, he balances pragmatic decisions with long-term maintainability.
14 years of coding experience
19 years of employment as a software developer
Master's Degree, Computer Science, Master's Degree, Computer Science at Vrije Universiteit Amsterdam (VU Amsterdam)
Stackoverflow
256reputation
8kreached
7answers
0questions
Github Skills (20)
javascript10
typescript10
typescript-types10
typescripts10
testing9
compiler8
compiler-compiler8
template-engine7
templater7
template-tags7
graphql6
parse-platform6
haskell6
xcode6
vue6
Programming languages (17)
Github contributions (5)
sveltejs/svelte
May 2019 - Aug 2019
web development for the rest of us
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:9 commits, 13 PRs, 34 comments in 3 months
Contributions summary:Sander contributed to the TypeScript implementation of the store, including the `readable`, `writable` and `derived` functions. They also added documentation and enhanced the types used in the store. Further, the user made changes to the test suite, simplifying the testing of the store's functionality and implementing type-safe derived stores.
compilertemplatewebappweb-appsui
sanderhahn/htpasswd
May 2020 - Jan 2024
htpasswd for Hasura
Contributions:2 PRs, 7 pushes, 1 branch in 3 years 8 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.