Feeny
Sigma Prime

Expression of Interest at Sigma Prime (Global)

Sigma Prime· Global·

Role details

Work type
Remote
Employment
Full-Time

Job description

Don’t see a role that fits? We’d still love to hear from you.

Sigma Prime is a remote-first team building and securing critical infrastructure across the Ethereum ecosystem. Founded in Sydney, Australia, our team now works remotely from around the world.

Alongside security assessments and protocol research, we build and maintain production infrastructure, including Lighthouse, one of the most widely used Ethereum consensus clients, Bombora, our Ethereum block builder, Anchor, an implementation of the SSV protocol, and Secstant, our security tooling platform.

We value people who are curious, collaborative, and generous with their knowledge, who enjoy solving difficult technical or operational problems.

If you think you’d be a good fit, we’d love to hear from you. We review expressions of interest on a rolling basis and will reach out if a suitable opportunity comes up.

Why work at Sigma Prime

  • Culture: Deeply technical, research-driven, and open-source oriented. The team is composed of researchers, developers, and security engineers who are passionate about decentralization and Ethereum's resilience.
  • Remote/Hybrid Policy: Remote-first with headquarters in Sydney, Australia. Team is distributed across 14 countries (including US, Spain, Canada, Ukraine, Croatia, and others). In-office or remote options available depending on location.
  • Impact: Work on the most critical blockchain infrastructure in the industry — your audits and code directly secure billions of dollars in value. Contribute to open-source software used by the entire Ethereum network.
  • Team composition: ~61% of employees are in technical roles; the team includes specialists (44%), management (24%), and directors (12%). Flat, expert-driven structure.
  • Notable perks: Opportunity to work on cutting-edge problems at the intersection of security research, protocol engineering, and production infrastructure. Deep involvement in the Ethereum ecosystem and open-source community.

Application questions