Markus Dethlefsen
Senior Software Developer at FFG Finanzcheck Finanzportale GmbH
Wedel, Schleswig-Holstein, Germany
Summary
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SeniorMarkus Dethlefsen is a Senior Software Developer with over two decades of hands-on experience in the JavaScript/TypeScript ecosystem and 11 years of recent professional experience driving fullstack and platform architecture. He combines Tech- and Process-Lead experience in high-throughput microservice environments with current focus on AI-augmented engineering, having built multiple Model-Context-Protocol servers and integrated Anthropic Claude into daily tooling. Markus designs scalable frontends and clean microservice boundaries, champions testing cultures (TDD/BDD) and observability, and has delivered production systems using Next.js, React, Go, Kafka, AWS/GCP and Kubernetes. As an independent developer he produces nontrivial OSS and side projects—ranging from a 5k-LOC mail-MCP to a Godot-4 API bridge and an automated CalDAV watcher—that reveal deep systems and integration skills beyond typical frontend work. He mentors teams, runs tech talks and workshops, and pairs product-focused architecture with pragmatic CI/CD and monitoring practices. Open to senior or lead roles where AI toolchains are embedded into the engineering platform rather than used as isolated utilities.
11 years of coding experience
2 years of employment as a software developer
Github Skills (63)
game-development9
game-engine8
speaker7
godot7
dbus7
scrum7
open-source7
adobe-experience-manager7
twitch6
recurly5
plugin5
wallabyjs5
netlify4
barrage4
npm-outdated4
Programming languages (5)
Github contributions (5)
Drathal/remoteSync
Aug 2018 - Dec 2019
Daily Scrum speaker order tool ;D
Contributions:22 commits, 11 PRs, 17 pushes in 1 year 4 months
golangadobe-experience-managerspeakerdbusbarrage
StyleLounge/webapp-end2end
Jan 2017 - Dec 2017
Contributions:1 release, 2 PRs, 30 pushes in 10 months
end-2-end-testingtestingnightwatchend-2-endwebapp
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