Staff Software Engineer - Cyber Security Start - UP - London

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, Go, Java or C#
• 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