Haystack
AI Software Engineer
London
Posted about 22 hours ago
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Working with a leading technology business specialising in cybersecurity and penetration testing, you will join a permanent, fully remote team in the UK. This role offers the chance to build intelligent AI agents that can plan, reason, operate security tooling, and identify exploitable vulnerabilities within controlled environments.
The Role
- Design, build, and deploy AI agents that automate penetration testing, including planning, tool use, and reasoning over security findings
- Develop sandboxed cyber-lab and range infrastructure using containers and Kubernetes
- Deliver AI features from initial design through to production, including evaluations, guardrails, and monitoring
- Improve agent performance through prompt engineering, tool orchestration, evaluation, and token and cost optimisation
- Lead code reviews and technical design sessions while supporting the development of other engineers
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What You'll Need
- Significant software engineering experience, with a proven ability to build and scale production systems
- Strong Python development skills and willingness to work with or learn Go
- Hands-on experience building and operating production AI applications using large language models and agentic frameworks
- Understanding of RAG, MCP, LangGraph or similar technologies, including tool integration and prompt design
- Proficiency with Docker, Kubernetes, isolated sandbox environments, and cloud experience (GCP advantageous)
- Knowledge of microservices, gRPC, API design, asynchronous messaging, and platforms such as Pub/Sub or Kafka
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What's On Offer
- Opportunity to work on autonomous security systems with a meaningful real-world impact
- Be part of a permanent, fully remote team
- Exposure to cutting-edge AI and cybersecurity challenges
Apply via Haystack today!
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