Theodor Fiedler
Senior Software Engineer II at Boulevard
Hamburg, Germany
Summary
🤩
RockstarTheodor Fiedler is a Senior Software Engineer II based in Hamburg with 11 years of professional experience building reliable backend systems and ship-ready engineering at companies like Boulevard and XING. He brings deep Elixir expertise, contributing to the core Elixir project on calendar and duration handling—adding ISO 8601 duration parsing, date/time shift features, and careful edge-case tests that improve robustness. His background spans roles from hands-on software development to senior security engineering, blending practical feature delivery with a strong attention to correctness and maintainability. Known for refactoring and consolidating complex libraries, he prefers pragmatic, well-tested solutions that scale in production.
11 years of coding experience
11 years of employment as a software developer
Github Skills (2)
elixir10
testing9
Programming languages (10)
Github contributions (5)
elixir-lang/elixir
May 2020 - Feb 2025
Elixir is a dynamic, functional language for building scalable and maintainable applications
Role in this project:
Back-end Developer
Back-end DeveloperContributions:70 reviews, 22 PRs, 117 comments in 4 years 10 months
Contributions summary:Theodor primarily contributes to the Elixir language's core libraries, focusing on calendar and duration functionalities. Their work includes implementing new features like duration parsing from ISO 8601 strings and adding shift functionalities for date and time calculations. Additionally, they've made enhancements to existing modules by refactoring and consolidating code for better maintainability. The user also addresses edge cases and implements test cases to improve code quality and reliability.
functional-languagescalablefunctional-programmingelixircompiler
tfiedlerdejanze/expublish
Feb 2021 - Sep 2022
Automates semantic release versioning and best practices for elixir packages.
Contributions:2 reviews, 117 commits, 129 PRs in 1 year 7 months
hexbranchesversion-controlautomatesconflict-resolution
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.