Backend Engineer

Backend Engineer | Agentic PlatformsUp to £80,000 + Benefits London, UK | Hybrid | 3 days a weekWe'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 usersCollaborating cross-functionally with product, data, and platform teams to ship high-quality software on a frequent release cadenceOwning quality through rigorous automated testing and metricsEvaluating and selecting the right technical solution for each task, factoring in cost and timelinesWorking hands-on with Gen AI tools and ML frameworks to build and optimise systems for performance, scalability, and reliabilityContributing to agentic workflows, including autonomous and multi-agent architecturesWhat we're looking for:Proficiency in Python or relevant backend technologiesExperience with Gen AI tools (LangGraph, CrewAI, Hugging Face, OpenAI APIs, etc.) and ML frameworks such as PyTorch/TensorFlowStrong 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 + BenefitsHybrid working from a market-leading, tech-driven businessGenuine opportunity to shape AI adoption across a scaling productWork on systems used by millions of members globallyThis 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*