Simon Noetzlin is a backend software engineer based in Geneva with 9 years of professional experience and 5+ years focused on backend systems, currently contributing to Interchain Security at Informal Systems. He specializes in building robust blockchain infrastructure and has implemented core back-end features enabling consumer chains to signal validator downtime and handle slashing via IBC channels. His background spans research and R&D at the ITU, a Master’s from EPFL, and applied cloud/EO work during a thesis with ESA, giving him a blend of academic rigor and production engineering. Comfortable modifying proto definitions and cross-module integrations, he brings low-level protocol understanding alongside practical system design. Notably, he’s contributed to a high-impact Cosmos repo that facilitates shared proof-of-stake security across chains—demonstrating both domain expertise and open-source collaboration. Pragmatic and curious, he likes tackling complex, cross-component problems that sit at the intersection of distributed systems and cryptoeconomics.
9 years of coding experience
3 years of employment as a software developer
Master's degree, Science of communication, Master's degree, Science of communication at Ecole polytechnique fédérale de Lausanne
Bachelor's degree, Computer Systems Networking and Telecommunications, Bachelor's degree, Computer Systems Networking and Telecommunications at HEPIA
Interchain Security is an open sourced IBC application which allows cosmos blockchains to lease their proof-of-stake security to one another.
Role in this project:
Back-end Developer
Contributions:17 releases, 624 reviews, 174 commits in 1 year
Contributions summary:Simon's commits focus on implementing core back-end functionality for Interchain Security. Their work includes adding features for consumer chain initiated slashing, which involves modifying the CCV and slashing modules using an IBC channel. They've added new types of data, like `ValidatorDowntimePacketData`, and integrated the consumer chain's ability to signal validator downtime to the provider chain. The user's changes involve modifying protobuf definitions and interfacing the CCV and slashing modules.
Contributions:80 commits, 4 PRs, 72 pushes in 3 months
securityinterchainblockchain
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Simon Noetzlin - Software Engineer at Informal Systems