Summary
✨ AI‑Generated
An early-stage cybersecurity startup is seeking a Software Engineer to build intuitive experiences around autonomous security analysis. You will work across the stack, turning complex vulnerability discoveries into useful workflows for security teams, while contributing to product architecture, engineering practices, and customer-facing functionality. Strong experience with TypeScript, React, Next.js, and Python is valuable.
Highlights
Join an early-stage cybersecurity team with strong funding, real enterprise customers, and meaningful revenue. The role offers broad ownership across product, architecture, engineering practices, and customer-facing experiences while working closely with an experienced team.
Description
Software Engineer | AI × Cybersecurity | London, Hybrid
Build the product behind AI agents that find vulnerabilities before attackers do.
We’re recruiting for an early-stage cybersecurity startup building autonomous AI agents that discover and prove security vulnerabilities in real customer environments.
With $4 million in pre-seed funding, paying enterprise customers and real revenue, the team is now growing—and looking for a Software Engineer who enjoys building exceptional products across the stack.
This is an opportunity to shape the product, architecture and engineering practices while working closely with customers and a small, experienced team.
What you’ll build
You’ll turn complex agent discoveries into clear, useful experiences that security teams rely on: investigating findings, reviewing evidence, managing assets, scheduling scans and reporting results.
Your ownership will span the full journey:
Build intuitive interfaces with TypeScript, React and Next.js.Develop Python backend services, REST APIs and relational data models.Take features from customer conversations through design, implementation and production.Own testing, deployment, monitoring and improvements after launch.Use AI coding agents thoughtfully—and help improve the workflows, evaluations and guardrails around them.
What we’re looking for
Experience shipping software used by real customers, with meaningful hands-on work across frontend and backend.Strong TypeScript, React and Next.js skills, with attention to usability, performance and polish.Solid backend and API engineering fundamentals; Python experience is particularly valuable.Confidence with SQL and relational databases, ideally PostgreSQL.Practical experience using AI development tools such as Claude Code, Cursor, GitHub Copilot or similar, with careful review and verification.The initiative to clarify an ambiguous problem, make sensible decisions and take ownership through delivery.
xperience with B2B SaaS, data-heavy interfaces, cloud infrastructure, Docker or agentic AI would be a bonus.
Cybersecurity experience is welcome, but curiosity about the domain and a willingness to learn matter too.
Why this opportunity?
You’ll work on technically challenging problems with visible customer impact.
You’ll have a meaningful voice in what gets built and how—and the chance to help shape an ambitious product while the team is still small.
📍 London | Three days per week in the office
Interested? Send me a message with your CV or LinkedIn profile.
You don’t need to tick every box—we’d love to hear what you’ve built and what you want to tackle next.
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