Backend Engineer (AI Agents)

A leading AI cybersecurity start-up in Spain seeks a Senior Engineer to architect and scale agentic AI systems. This role includes hands-on backend development, ML integrations, and product direction, requiring 7+ years of experience and strong expertise in Python. Successful candidates will enjoy full remote flexibility and an attractive salary of up to €160k. Join a high-caliber team making a significant impact in the cybersecurity space., * 7+ years backend engineering experience.

• Strong Python backend expertise including API design and database architecture.
• Experience integrating LLMs or AI services into production systems.
• Familiarity with agent frameworks such as LangChain or LlamaIndex.
• Solid cloud experience, ideally AWS, with CI/CD and containerisation experience.
• Strong understanding of scalable systems design and performance optimisation.
• Experience building secure, production-grade systems.
• Comfortable operating in high-ownership, fast-moving environments., Python backend expertise API design Database architecture Integration of LLMs Experience with agent frameworks Cloud experience (AWS) CI/CD Containerization Scalable systems design Performance optimization Descripción del empleo

• Design and build scalable backend systems to support complex agentic workloads.
• Develop and productionise AI Agents solving real-world cybersecurity challenges.
• Integrate LLMs and AI services into robust, secure production environments.
• Own features end-to-end from architecture and design through deployment.
• Optimise performance, reliability, and security across the stack.
• Define engineering standards and best practices as the team scales.
• Rapidly prototype new AI-driven functionality based on user feedback.
• Mentor engineers and contribute to architectural decision-making.