Principal Blockchain Engineer & Protocol Architect.

I work on Rust-based blockchain infrastructure, EVM execution layers, protocol design, and distributed systems.

I am currently working at Moonsong Labs, contributing to the core protocol of Moonbeam, an Ethereum-compatible smart contract parachain on Polkadot.

My work includes:

• Moonbeam core protocol architecture
• EVM execution-layer internals
• Gas metering and resource accounting
• Geth-compatible tracing APIs
• Runtime and node-level protocol development
• Protocol design for Moonbeam and Tanssi
• Upstream contributions to the Polkadot ecosystem

I am also a maintainer of Polkadot Frontier, the EVM compatibility layer for Polkadot and Substrate. Frontier provides the EVM backbone for Polkadot-based chains and enables Ethereum-compatible execution, RPCs, precompiles, and tooling on top of the Polkadot SDK.

• Rust protocol development
• Polkadot SDK / Substrate
• EVM execution layers
• Frontier / Ethereum compatibility
• Precompiles
• Gas metering and resource accounting
• Geth-compatible tracing
• Distributed systems
• Decentralized storage protocols
• Merkle proofs and on-chain verification
• Protocol architecture and incentives
• Technical leadership and mentoring

Since 2021, I have been working on Moonbeam's core protocol and EVM compatibility layer.

Notable work includes:

• Redesigning Moonbeam's EVM gasometer into a multi-dimensional model accounting for both execution cost and proof-size cost.
• Leading the implementation of full Geth-compatible EVM tracing, including debug_* and trace_* RPC methods.
• Contributing to protocol architecture, runtime design, precompiles, and node internals.
• Acting as a technical point of contact for core protocol matters.
• Mentoring and coaching engineers working on protocol-level components.

I contributed to the Tanssi core protocol, including the design of the shared collators reward system and related protocol-level incentives.

I worked on protocol design and research for StorageHub, a Web3 Foundation grant project focused on decentralized storage verification.

The work included designing an on-chain storage proof verification mechanism using Merkle Forest Trees, with the goal of enabling scalable verifiable storage while minimizing persistent on-chain state.

Most of my work is in Rust and blockchain infrastructure.

I contribute to:

• Polkadot Frontier
• Moonbeam
• Polkadot SDK
• Tanssi

I previously worked on Duniter, a blockchain-based P2P cryptocurrency engine with a Web of Trust, including its migration toward Substrate-based architecture through Duniter-v2s.

Most of my historical Duniter contributions are hosted on git.duniter.org.

I created and maintain a few Rust crates, including:

• fast-threadpool
• pkstl

I have also contributed to ecosystem crates such as async-lock.

• Rust
• TypeScript / Node.js
• Java
• SQL
• WASM
• Linux
• Docker
• GitLab CI/CD
• GitHub Actions

• Mail: c at elo dot tf
• LinkedIn: linkedin.com/in/librelois