Backend Engineer

Backend Engineer | Agentic Platforms

Up to £80,000 + Benefits

London, UK | Hybrid | 3 days a week

We're partnering with a forward-thinking technology business to hire a Backend Engineer into a growing AI engineering function at the heart of a market-leading consumer platform. The business is actively embedding AI across its engineering workflows and building intelligent, autonomous systems that are shaping how millions of members interact with its product.

As a Backend Engineer, you'll play a critical role in designing, building, deploying, and monitoring AI systems that scale across the business. You'll work cross-functionally with product, data, and platform teams, with a "you build it, you run it" mindset, and a passion for AI-driven innovation that goes beyond theory into production-grade systems.

What you'll be doing:

• Designing, building, and deploying AI systems that scale to millions of users
• Collaborating cross-functionally with product, data, and platform teams to ship high-quality software on a frequent release cadence
• Owning quality through rigorous automated testing and metrics
• Evaluating and selecting the right technical solution for each task, factoring in cost and timelines
• Working hands-on with Gen AI tools and ML frameworks to build and optimise systems for performance, scalability, and reliability
• Contributing to agentic workflows, including autonomous and multi-agent architectures

What we're looking for:

• Proficiency in Python or relevant backend technologies
• Experience with Gen AI tools (LangGraph, CrewAI, Hugging Face, OpenAI APIs, etc.) and ML frameworks such as PyTorch/TensorFlow
• Strong understanding of ML fundamentals (training, evaluation, deployment) and LLM-specific challenges (prompt engineering, latency, cost optimisation)
• Experience with cloud platforms (AWS, GCP, Azure) and infrastructure-as-code (Terraform)
• Familiarity with DevOps practices (CI/CD, Docker, K8s) and observability tools (Prometheus, Grafana, Datadog)
• Experience with distributed systems and scaling, plus multiple datastores (SQL and NoSQL)

What's on offer:

• Up to £80,000 + Benefits
• Hybrid working from a market-leading, tech-driven business
• Genuine opportunity to shape AI adoption across a scaling product
• Work on systems used by millions of members globally

This is an exciting opportunity for a Backend Engineer to join a business where technical growth and people development carry equal weight. If this sounds like the right next move, apply now!

*Due to the high volume of applications, not all applicants will receive individual feedback*