Job Description

The Company n

Sigma Prime is a boutique information security firm who provide specialist blockchain expertise. We are a team of developers, researchers, and security engineers who have come together with the purpose of building a secure and decentralised world.

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Ethereum has been a focus of ours since 2015 and we have provided security reviews, design consultancy, and niche development services to prominent companies in the space, both locally and internationally.

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We build and maintain Lighthouse, which is an Ethereum 2.0 client built using Rust. The project is well established and considered one of the leading implementations in production today; the open-source repository can be found at github.com/sigp/lighthouse.

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We also build and maintain Anchor, which is an SSV client built using Rust. The repository can be found here: github.com/sigp/anchor.

The Role n

We are looking for experienced software engineers who care about decentralised systems and performance-critical infrastructure. You will help evolve our block-building and MEV-related systems, with room to work across the Ethereum ecosystem, including Layer 2s.

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You may fit the role if you:

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Write high-performance Rust and enjoy squeezing latency out of critical paths (profiling, flamegraphs, allocator choices, async/runtime tuning, lock contention, cache locality, zero-copy where it matters).

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Have deep EVM knowledge, including transaction execution mechanics (gas accounting, calldata/memory/storage semantics), state access patterns, and the practical implications of opcodes and precompiles for real-world workloads.

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Understand the MEV ecosystem end-to-end, from proposer/builder separation and relays to private orderflow, builder strategies, and the incentives that shape behaviour in production networks.

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Have done MEV searching yourself (or built MEV-adjacent systems).

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Are familiar with the transaction supply chain, including mempool dynamics, propagation/latency effects, private RPCs, orderflow providers, builders/relays.

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Are passionate about Ethereum, proof-of-stake blockchains, and/or decentralised systems

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The ideal candidate would be an Ethereum enthusiast with decent experience in Rust programming, who is looking to become a team of world-class blockchain engineers.

📌 Rust Engineer (Williamstown)
🏢 Sigma Prime
📍 Williamstown