Marcel Jankrift
Senior Engineer at Trade Republic
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolMarcel Jankrift is a Senior Engineer based in Berlin with 11 years of experience building backend systems, currently driving engineering efforts at Trade Republic. He progressed from Backend Engineer to Senior Engineer there, bringing deep hands-on experience in scalable service design, performance optimization, and API integrations. His academic background from the Hasso Plattner Institute (B.Sc. and M.Sc. in IT-Systems Engineering) is complemented by research assistant roles, reflecting a strong blend of theory and applied engineering. Marcel contributes to open source tooling for practical automation — notably a fast Facebook activity deletion tool where he implemented efficient backend logic, goroutine-driven concurrency, rate-limit handling, and UX-friendly progress reporting. Colleagues would describe him as someone who combines rigorous engineering with pragmatic product sensibility, often improving reliability and developer experience behind the scenes. He thrives on solving backend performance and integration challenges at scale.
11 years of coding experience
8 years of employment as a software developer
Bachelor of Science (B.Sc.), IT-Systems Engineering, Bachelor of Science (B.Sc.), IT-Systems Engineering at Hasso Plattner Institute
German, English
Github Skills (6)
go10
api10
facebook-api10
apidoc10
http-client9
text-manipulation8
Programming languages (12)
Github contributions (5)
marcelja/facebook-delete
Feb 2020 - Mar 2022
Fast facebook activity deletion
Role in this project:
Back-end Developer
Back-end DeveloperContributions:12 releases, 7 reviews, 60 commits in 2 years 1 month
Contributions summary:Marcel primarily focused on developing the back-end logic for deleting Facebook activity. They implemented features to retrieve and store URLs for deletion, along with functionalities to handle untagging and deleting photos. The contributions included creating functions to interact with the Facebook API and integrating features such as multi-select for category selection and goroutines for increased performance. The user also added functionality for handling rate limits, improved login flow, and incorporated a progress bar during deletion.
scrubberfacebookdeletionfacebook-apifacebook-graph-api
marcelja/dynamicpricing
Jun 2017 - Sep 2017
Contributions:75 commits, 1 branch in 3 months
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