Staff Software Engineer

Sector: Software Engineering

Reference: GG - 70

Staff Software Engineer | Cybersecurity Start-Up | London

Staff Software Engineer required to join a fast-growing cybersecurity start-up in London, building technology to solve some of the most challenging problems in modern security.

Built by an experienced founding team with a strong track record of building and scaling successful cybersecurity companies, this is an opportunity to join a high-calibre engineering team where you’ll have genuine influence over the architecture, technical direction, and engineering culture.

What you’ll do

• Remain highly hands-on , designing, building, and shipping complex production systems

• Own some of the hardest technical problems across the platform

• Influence architecture, system design, and technical direction

• Raise engineering standards and provide technical leadership through your work

• Mentor and support junior engineers

About you

• Extensive professional Software Engineering experience, operating at Senior, Principal, or Staff level

• Strong in one or more of Python, C#, Go, or Java

• Excellent system design, architecture, and software engineering fundamentals

• Experience building and scaling complex, production-grade systems

• Comfortable taking ownership of ambiguous technical problems from concept through to production

• A strong communicator who can influence technical decisions while remaining an individual contributor

• Someone who wants broader technical influence while remaining a hands-on IC

Bonus points

• Previous start-up or scale-up experience

• Experience within cybersecurity, cloud, infrastructure, or distributed systems

• Experience helping engineering teams establish technical standards and best practices

Why join?

• Take a senior technical role within a high-growth cybersecurity start-up

• Work alongside a world-class founding and engineering team

• Have significant influence over architecture and technical direction

• Solve genuinely difficult engineering and cybersecurity problems

• Stay hands-on while having impact across the wider engineering organisation

• Competitive salary + meaningful equity

If you’re a Staff-level Engineer who wants to stay close to the code while having a much broader technical impact, let’s connect.

Staff Software Engineer | Cybersecurity Start-Up | London