Alex Hansen
Berater
Hamburg, Germany
Summary
🤩
Rockstar🎓
Top SchoolAlex Hansen is a seasoned software engineer and consultant based in Hamburg with 13 years of experience building robust back-end systems and tooling. A functional programming enthusiast, he has made substantive contributions to flagship Haskell projects like GHC and Haddock, including low-level compiler optimizations and CI/CD work that improved determinism and deployment reliability. His career spans enterprise and startup roles—from long-term platform engineering at novomind to senior data engineering at Target and product-focused development at GroundCloud and Scarf. Alex combines systems-level thinking (atomic primitives, radix-tree optimizations) with pragmatic server-side features such as package repository and config-file support. He holds both bachelor’s and master’s degrees in computer science from Fachhochschule Wedel and brings a rare mix of compiler internals expertise and production-grade DevOps experience. Colleagues describe him as detail-oriented and quietly influential, often improving performance and reliability in ways that aren’t immediately visible.
13 years of coding experience
13 years of employment as a software developer
Master, Informatik, Master, Informatik at Fachhochschule Wedel
German, English
Github Skills (23)
github-ci10
cicd10
hackage10
project-configuration10
ghc10
cabal10
githubaction-workflow10
haskell10
documentation10
llvm9
unit-testing9
build-system9
aeson9
performance-optimization9
compiler-design9
Programming languages (18)
Github contributions (5)
haskell/haddock
Jun 2017 - Dec 2022
Haskell Documentation Tool
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:3 releases, 37 reviews, 37 commits in 5 years 7 months
Contributions summary:Alex primarily contributed to the Haskell documentation tool, `haddock`. Their work included importing modules, fixing tests, and improving the codebase. A significant portion of the commits involved setting up and configuring the CI/CD pipeline using GitHub Actions. Additionally, the user addressed issues and enhanced code within the Haddock API, specifically focusing on deterministic behavior and instance handling.
ghchaskellcabaldocumentation-toolservant
haskell/hackage-server
Sep 2017 - May 2022
Hackage-Server: A Haskell Package Repository
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 reviews, 5 commits, 9 PRs in 4 years 9 months
Contributions summary:Alex primarily focused on enhancing the Hackage-Server backend functionality. Their work included implementing features related to documentation handling, QuickNav functionality, and analytics pixel integration. They also addressed compatibility issues with older GHC versions and upgraded the QuickJump format. These changes involved modifications to core server logic, templating, and data structures related to package management and documentation.
ghchackage-servercabalhaskellservant
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