Christoph Witzko
Founding Staff Software Engineer at Interloom
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolChristoph Witzko is a founding staff software engineer and freelance full‑stack specialist based in Berlin with 12+ years building backend systems, DevOps, and cloud-native infrastructure. He repeatedly ships MVPs and production-grade platforms—designing secure, scalable architectures, CI/CD pipelines, Terraform/OpenTofu provisioning, and database tuning for startups and enterprise teams. Christoph cofounded Greenkeeper, implementing its resilient queue-based API for automated npm dependency updates, and maintains go-semantic-release to automate language-agnostic versioning and publishing. His recent work includes deploying LLM proxies and globally available inference providers on Cloudflare Workers and GCP, reflecting a practical focus on ML deployment at scale. Colleagues rely on him for performance benchmarking, security-minded architecture reviews, and turning complex deployment needs into repeatable automation.
12 years of coding experience
10 years of employment as a software developer
Master of Science (M.Sc.) Information Systems Management, Master of Science (M.Sc.) Information Systems Management at Technische Universität BerlinReife- und Diplomprüfung Elektronik / Technische Informatik, Reife- und Diplomprüfung Elektronik / Technische Informatik at HTBLuVA SalzburgMultiMediaTechnology / Web Development, MultiMediaTechnology / Web Development at Fachhochschule Salzburg
German, English
Stackoverflow
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Github Skills (15)
dependency-management10
hapi10
automation10
nodejs10
automations10
javascript10
api10
backend10
apidoc10
cicd9
github9
npm9
error-handling9
scheduling9
testing8
Programming languages (11)
Github contributions (5)
greenkeeperio/greenkeeper
May 2017 - Jun 2017
:robot: :palm_tree: Real-time automated dependency updates for npm and GitHub
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:4 releases, 14 commits, 57 PRs in 1 month
Contributions summary:Christoph contributed to the automation of dependency updates within the Greenkeeper project. They focused on creating and modifying jobs related to creating version branches and pull requests, as well as handling errors and scheduling reminders. The contributions also included modifying core files for handling potential time-out issues and for setting up initial jobs.
real-timedependency-updatespalmrobotupdates
hoodiehq/hoodie
May 2015 - Nov 2015
:dog: The Offline First JavaScript Backend
Role in this project:Back-end Developer
Back-end DeveloperContributions:81 commits, 5 PRs, 1 push in 6 months
Contributions summary:Christoph primarily focused on back-end development tasks, upgrading and refactoring the server infrastructure. They upgraded the Hapi.js version, consolidated connection configurations, and addressed logging and API-related issues. Their contributions also included bug fixes related to API functionality and enhancements, such as sending bearer tokens for session requests. These changes indicate a focus on maintaining and improving the server's stability and features.
jsjavascriptbackendnodejshoodie
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