Jan Van Esdonk
Senior Software Engineer at Fielmann Group
Hamburg, Germany
Summary
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RockstarJan Van Esdonk is a Senior Software Engineer based in Hamburg with 11 years of experience building backend systems and leading engineering teams across fintech and product companies. He progressed from working student roles into engineering management and technical leadership at finleap connect and Qwist, and now applies that hands-on plus leadership blend at Fielmann Group. Jan has a strong backend focus and a track record of shipping production services, tooling, and enterprise admin solutions while mentoring teams through growth phases. He bridges individual contributor depth with team-level delivery, often stepping into people-facing management without losing technical ownership. A pragmatic problem-solver, he brings institutional memory from long tenures and a knack for turning maintenance-heavy systems into maintainable platforms.
11 years of coding experience
6 years of employment as a software developer
Github Skills (45)
iban10
nix10
linux10
alembic10
python-bindings10
wifi10
java9
python9
nixos9
graph9
malware9
parsing9
android-sms9
nixpkgs9
swift9
Programming languages (11)
Github contributions (5)
javaes/alembic-viz
Nov 2016 - Sep 2022
tool to create revision graphs from alembic migration revisions
Contributions:1 release, 6 commits, 3 PRs in 5 years 11 months
alembicdatabasegraphmigrationspython
javaes/sailfish-msg-importer
Apr 2015 - Apr 2018
This little script helps to import messages from other mobile OSs to Sailfish OS. The first version only supports Android SMS messages exported by SMS Backup & Restore.
Contributions:12 commits, 1 PR, 7 pushes in 3 years
android-smsmobilesailfishossmsjolla
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