Marcus Weiner
Platform Engineer
Cologne, North Rhine-Westphalia, Germany
Summary
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RockstarMarcus Weiner is a Platform Engineer based in Cologne with 11 years of hands-on experience building reliable backend systems, developer tooling, and CI/CD infrastructure. He has driven platform and DevOps work at Netlify and DeepL and now contributes to Supabase, combining production-grade engineering with a strong open-source footprint. His contributions to well-known projects like netlify/gocommerce, gotrue, and testcontainers-go show expertise in payment flows, SAML/OAuth authentication, containerized test automation, and build-image reliability. Marcus is comfortable across backend, DevOps and full-stack tasks—fixing subtle runtime panics, adding regression tests, and refactoring core libraries to improve stability and developer experience. He brings an eye for pragmatic engineering: automating resource cleanup, improving test robustness, and baking reproducible dependencies into build images. Colleagues rely on him to turn brittle integrations into maintainable components that scale with product needs.
11 years of coding experience
6 years of employment as a software developer
Stackoverflow
26reputation
873reached
1answer
0questions
Github Skills (37)
javascript10
docker10
back-end-development10
api-design10
netlify10
saml10
testing10
command-line-interface10
authentication10
user-authentication10
build-system10
go-testing10
containerization10
dockers10
cicd10
Programming languages (29)
Github contributions (5)
netlify/gocommerce
Oct 2018 - Dec 2021
A headless e-commerce for JAMstack sites.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:16 releases, 3 reviews, 95 commits in 3 years 2 months
Contributions summary:Marcus primarily focused on back-end development, specifically addressing a runtime panic caused by missing payment providers. They fixed a bug in the middleware related to handling the absence of payment providers, including a regression test. They also refactored and improved tests related to user management, pagination, and order processing, enhancing the overall robustness of the e-commerce platform. Furthermore, the user contributed to the sales reporting and order management features.
ecommercejamstackheadlessmanaged-servicesproduction
netlify/gotrue
Aug 2018 - Feb 2022
An JWT based API for managing users and issuing JWT tokens.
Role in this project:Back-end Developer
Back-end DeveloperContributions:1 release, 24 reviews, 33 commits in 3 years 6 months
Contributions summary:Marcus primarily focused on refactoring and extending the authentication API, specifically related to external OAuth and SAML providers. Their work included creating a modular structure for handling different OAuth providers, paving the way for SAML integration. The user implemented the SAML 2 provider, including the necessary configuration, metadata handling, and callback functionality. Additionally, they added database persistence for signing certificates and keys for the SAML provider, ensuring secure operation.
jwtauthenticationproduction
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