Senior Machine Learning Engineer
LB469
Posted: 23/06/2026
- £90,000 - £140,000
- London Area
Senior Machine Learning Engineer
We're partnered with a high-growth AI startup on a mission to transform how enterprise teams build and manage software. By combining LLMs, agents, and advanced evaluation systems, they're creating intelligent products that automate complex workflows and deliver real business value.
As they scale, they're looking for a Senior Machine Learning Engineer to play a key role in designing, building, and deploying next-generation AI systems. This is an opportunity to work at the forefront of applied AI, solve challenging technical problems, and have a direct impact on product and company direction.
What You'll Do
- Design and deploy production-grade AI and agentic systems.
- Own projects end-to-end, from ideation through deployment and iteration.
- Build evaluation frameworks that measure model performance, reliability, and business impact.
- Develop integrations between AI systems, internal tools, and customer environments.
- Partner closely with product and engineering teams to identify and deliver high-value use cases.
- Continuously improve system performance, scalability, and robustness in production.
- Help shape best practices and technical standards for applied AI across the organisation.
What We're Looking For
- Experience building and shipping machine learning or LLM-powered products.
- Strong understanding of agents, retrieval systems, orchestration, and tool use.
- Experience developing evaluation, testing, or benchmarking frameworks.
- Excellent Python engineering skills.
- Ability to take ownership and thrive in fast-moving startup environments.
- Product-focused mindset with a passion for solving customer problems.
Why Join?
- Build AI systems that are delivering measurable impact for enterprise customers today.
- Work on cutting-edge challenges across agentic AI, LLMs, and evaluation.
- Join a small, highly technical team where your work directly influences product and strategy.
- Enjoy significant ownership, autonomy, and opportunities for growth.
- Competitive salary, meaningful equity, and the chance to help shape the future of enterprise AI.
Anna Heneghan
Head of Machine Learning & AI Recruitment