Senior Full-Stack Engineer – Certifications

Senior Full-Stack Engineer – Certifications Full-time, remote. Join […] as a Senior Full-Stack Engineer on our Certifications Squad! 🥷 […] is the fastest growing online cybersecurity training platform.

Our mission is to make learning and teaching cybersecurity easier through gamified security exercises and challenges. In just a handful of years, we’ve grown into a highly profitable business trusted by over 9 million learners and 1,000+ enterprise organisations globally, including Google, KPMG and the US Military and our growth isn’t slowing down. Most cyber security certifications test what you've memorised.

Ours test what you can do. SAL1 and SAL2 put candidates inside a live SOC simulator, PT1 is a hands-on penetration test with a professional report, and AI1 covers AI security. Now we're building the next level: certificates that validate the path a learner chose on […] and prove their quality to prospective and current employers.

You'll join a high-autonomy, high-velocity squad where your decisions directly impact real learners from day one. Location / Time Zone: 100% Remote (UK / EU based with strong overlap with UK business hours required). The Stack & Engineering Culture Core Stack: TypeScript, React, Next.js, Node.js, Express, MongoDB High Velocity: We operate as a high-trust, high-autonomy team shipping 250+ PRs per week Pragmatic AI Workflow: We actively leverage modern AI development tools (Cursor, Claude Code, Codex) to accelerate execution The C