Senior Backend Engineer

Build agentic systems at the heart of modern cybersecurity

This is an opportunity to join a small, senior engineering team building AI-driven products that operate in genuinely high-stakes environments.

You’ll be working on agentic systems and ML-powered backend services that sit at the core of a security platform used to tackle real, evolving threats. This isn’t experimentation for experimentation’s sake — it’s about designing systems that are reliable, scalable, and trusted.

If you’re excited by AI in production, this one stands out.

• Early-stage startup with strong momentum

• Product built from the ground up, not bolted on

• Deep technical leadership with big-tech and scale-up backgrounds

• Small team where engineers shape architecture and direction

• Operating in a space where the problems are real and urgent

You’d be joining at a point where decisions made now will matter for years.

They’re looking for a senior backend engineer who is comfortable operating close to the core of the system.

You’re likely a strong fit if you have:

• 7+ years experience in backend engineering

• Strong Python experience and API design fundamentals

• Experience building and scaling production backend systems

• Working knowledge of ML concepts and how AI fits into real systems

• Exposure to LLMs, AI services, or agent-based architectures

• Comfort working in cloud environments (AWS, CI/CD, containers)

You don’t need to be an ML researcher. They care far more about engineering judgement and system design.

You’ll play a central role in building and scaling agentic backend systems, including:

• Designing backend architectures that support AI agents

• Integrating LLMs and AI services into production workflows

• Owning features end to end, from concept to deployment

• Optimising performance, reliability, and security

• Prototyping quickly and iterating based on feedback

• Defining best practices as the engineering team grows

This is a hands-on role with real ownership, not a narrow execution brief.

This team values:

• Clean, scalable system design

• Intellectual curiosity and strong problem-solving

• Pragmatism over dogma

• Clear communication across engineering and product

• Moving fast without breaking trust

You’ll be expected to contribute technically and shape how things are built.

• Direct influence on product architecture

• Opportunity to mentor and lead as the team scales

• Exposure to customers and real-world use cases

• Work that sits at the intersection of AI and security

If you want your work to genuinely matter, this is a strong one.