Sebastian Stammler
Protocol Engineering Manager at OP Labs
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolSebastian Stammler is a protocol engineering manager and mathematician with 13 years of experience building privacy-preserving and blockchain infrastructure from research prototypes to production systems. Based in Berlin, he leads protocol engineering at OP Labs while pursuing applied research in secure multi-party computation and privacy for genomic and medical data as a PhD student at TU Darmstadt. He co-founded and led implementation at Perun and Blocksource, combining founder-level product instincts with deep hands-on backend and DevOps skills demonstrated in contributions to high-profile open-source projects like Optimism. His work blends rigorous mathematical thinking—MASt from Cambridge—with practical engineering: performance optimizations in anonymization tooling, thread-safe cryptographic primitives, and robust CI/test improvements. Known for pragmatic problem solving, he often surfaces subtle correctness and efficiency wins (for example, entropy estimator selection and batcher configuration fixes) that improve long-running distributed systems.
13 years of coding experience
3 years of employment as a software developer
MASt, Mathematics, MASt, Mathematics at University of CambridgeTechnischen Universität Darmstadt
Github Skills (31)
algorithm10
circuit10
algorithms10
c-language10
pytest10
python10
testing10
anonymity10
data-masking10
data-structure10
java10
anonymize10
mpc10
javas10
go10
Programming languages (23)
Github contributions (5)
ethereum-optimism/optimism
Jan 2023 - Jan 2023
Optimism is Ethereum, scaled.
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:15 releases, 1131 reviews, 12 commits in 7 days
Contributions summary:Sebastian primarily contributed to the back-end infrastructure of the Optimism project. The user focused on fixing issues related to deploying and configuring the system, calculating parameters for the channel output, and adding tests for the functionality of the channel. The contributions also encompassed adding and configuring features of the batcher's configuration parameters and also modifying the tests.
rollupl2-scalingovmethereumblockchain
encryptogroup/ABY
Apr 2018 - Jan 2019
ABY - A Framework for Efficient Mixed-protocol Secure Two-party Computation
Role in this project:Back-end Developer
Back-end DeveloperContributions:31 commits, 16 PRs, 27 comments in 9 months
Contributions summary:Sebastian primarily focused on improving the ABY framework's core functionality. Their contributions included casting variables to the correct data types in arithmetic sharing, enhancing debug output by incorporating mutexes for thread safety, and introducing a multiplication with constant inputs gate. Furthermore, they modified the circuit code and updated the debug output for arithmetic sharing.
computationsecret-sharingcryptographysecurempc
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.