Alan Sapède
Chief Technology Officer at Moonsong Labs
Boston, Massachusetts, United States
Summary
🤩
Rockstar🎓
Top SchoolAlan Sapède is a seasoned technology leader and CTO with 14 years of experience building large-scale backend systems, public blockchains, and collaborative platforms from startups to enterprise. Based in Boston, he blends strategic product thinking and team motivation with deep hands-on engineering—having contributed to high-profile open-source projects like Parity's Substrate and Polkadot SDK to improve EVM integration and cross-chain compatibility. He has led engineering and CTO roles at Moonsong Labs, PureStake and Fuze, driving performance, reliability and developer-facing features across distributed systems. Known for prioritizing organization, team happiness and long-term strategy over pure technical showmanship, he pairs a competitive, energetic leadership style with practical problem-solving. Outside work he channels the same drive into diverse sports and world travel, a restless curiosity that informs creative solutions in game design and system optimizations.
15 years of coding experience
13 years of employment as a software developer
Engineer Computer Science Management, Engineer Computer Science Management at Ecole Nationale Supérieure d'Informatique et de Mathématiques Appliquées de GrenobleMaster 1 Informatique, Master 1 Informatique at Université du Sud Toulon Var
French, English, Spanish
Stackoverflow
101reputation
836reached
0answers
1question
Github Skills (28)
substrate10
javascript10
entity-manager10
evm10
entity-model10
uid10
rpc10
polkadot-js10
front-end-development10
ethereum10
blockchain10
rust10
polkadot10
codemirror10
react10
Programming languages (14)
Github contributions (5)
polkadot-evm/frontier
May 2020 - Sep 2021
Ethereum and EVM compatibility layer for Polkadot and Substrate.
Role in this project:
Backend Developer
Backend DeveloperContributions:26 reviews, 22 commits, 32 PRs in 1 year 4 months
Contributions summary:Alan primarily contributed to the backend functionality of the `frontier` repository, an Ethereum compatibility layer for Substrate. Their work focused on implementing Ethereum RPC methods, specifically adding `eth_protocolVersion`. The user's commits also included adding EVM support to the template node and creating the necessary runtime APIs, demonstrating their involvement in integrating Ethereum features within the Substrate environment. Further contributions included implementing gas price, block number, and balance runtime APIs.
ethereumevmpolkadotsubstrate
paritytech/polkadot-sdk
Aug 2023 - Apr 2025
The Parity Polkadot Blockchain SDK
Role in this project:Back-end Developer
Back-end DeveloperContributions:1 review, 41 comments, 22 issues in 1 year 7 months
Contributions summary:Alan contributed to the EVM (Ethereum Virtual Machine) integration within the Polkadot SDK, making changes to error handling and debugging. They added debug logs and improved the gas price checks, optimizing the EVM's performance. Furthermore, the user fixed an implementation of ripemd160 and added Moonbeam and Moonriver networks to the SS58 registry.
blockchainpolkadotcumulussubstrate
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.