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.
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.
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.
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 RoleWe 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.
You may fit the role if you:
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).
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.
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.
Have done MEV searching yourself (or built MEV-adjacent systems).
Are familiar with the transaction supply chain, including mempool dynamics, propagation/latency effects, private RPCs, orderflow providers, builders/relays.
Are passionate about Ethereum, proof-of-stake blockchains, and/or decentralised systems
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.
What We Do
Sigma Prime specialises in information security, blockchain, and system design. Their team provides the expertise required to operate securely and efficiently in high-risk, dynamic and emerging environments, such as cryptocurrencies and distributed ledgers. Sigma Prime also founded and maintains Lighthouse, an open-source implementation of the Ethereum 2.0 specification written in Rust, and are heavily involved in Ethereum 2.0 engineering and research. Through this work, they will change the way people use computers to cooperate and communicate.
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