Pierre-guillaume Herveou
Senior Engineer Smart Contract Team at Parity Technologies
Munich, Bavaria, Germany
Summary
🤩
Rockstar🎓
Top SchoolPierre-guillaume Herveou is a Senior Engineer leading smart contract work at Parity Technologies with 14 years of experience building scalable backend and front-end systems. Product-oriented and entrepreneurial, he has led engineering teams at Lyft—driving developer experience improvements for microservices and building custom Envoy filters—and co-founded startups where he owned full-stack product delivery. He combines deep blockchain and substrate experience with practical developer tooling expertise, having contributed to Parity’s Substrate and Polkadot SDKs and to popular open-source projects like localForage and uikit. Known for shipping pragmatic refactors, robust migrations and API-focused integrations, he bridges UX, performance and maintainability. Based in Munich, he pairs hands-on coding with mentoring and product design instincts, and has a habit of improving developer workflows that quietly accelerates whole teams.
14 years of coding experience
16 years of employment as a software developer
Polkadot Blockchain AcademyEngineer's degree Computer Science, Engineer's degree Computer Science at Isep - École d'ingénieurs du numérique
English, French, Spanish
Stackoverflow
686reputation
25kreached
7answers
16questions
Github Skills (42)
json10
substrate10
javascript10
event-handling10
ui-components10
testing10
wpgraphql10
neovim10
lua10
front-end-development10
github-api10
wordpress-graphql10
blockchain10
graphql10
smart-contracts10
Programming languages (23)
Github contributions (5)
paritytech/polkadot-sdk
Aug 2023 - Apr 2025
The Parity Polkadot Blockchain SDK
Role in this project:
Back-end Developer
Back-end DeveloperContributions:465 reviews, 229 PRs, 1481 pushes in 1 year 7 months
Contributions summary:Pierre-guillaume primarily contributed to the pallet-contracts repository, which is part of the Parity Polkadot Blockchain SDK. Their commits focused on refactoring and optimizing code related to storage and transaction handling within the contract execution environment. This involved fixing typos, refactoring functions for storage transparency, and implementing new features such as a system to handle delegate dependency and XCM-related APIs, indicating a focus on improving the core functionality and performance of smart contract operations.
blockchaincumuluspolkadotsubstrate
paritytech/substrate
Nov 2022 - Aug 2023
Substrate: The platform for blockchain innovators
Role in this project:Back-end Developer
Back-end DeveloperContributions:242 reviews, 46 PRs, 374 pushes in 8 months
Contributions summary:Pierre-guillaume primarily focused on fixing typos and refactoring code within the Substrate framework, specifically in the `frame/contracts` module. Their contributions involved addressing documentation errors, refactoring storage transparent functions, refactoring the instantiation code, adding a signed extension, and updating the multi-block migration strategy. The user also added and updated tests to ensure the correct functionality.
substraterustblockchainparitypolkadot
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