AI Engineer

Build Halt — United Kingdom · Posted ~2 hours ago

Senior Full-time

Skills

AI agents LLMs API integration machine learning software architecture production deployment LLM GPT Claude Python APIs

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Summary ✨ AI‑Generated

A technology company is hiring an AI engineer to design and deliver reliable AI agent systems. The role involves integrating language models, building evaluation methods, monitoring performance, and creating production-ready solutions.

Highlights

Build production AI systems from prototype to deployment, with ownership over architecture, reliability, monitoring, and continuous improvement.

Description

Senior AI Engineer: Production AI Agents We're looking for a Senior AI Engineer. You'll take a rough idea, turn it into a working prototype, and ship it as a reliable, monitored system that real users depend on every day. You'll design it, build it, ship it and make it better over time. What you'll do - Take full ownership of AI agent products from start to finish: scoping, architecture, build, deployment and ongoing improvement - Design and build agentic systems that use tools, call APIs, carry out multi-step tasks and hold up under real-world messiness - Turn prototypes into production systems with proper error handling, fallbacks, guardrails and human-in-the-loop where it matters - Build evaluation frameworks and test suites so we know an agent works before it ships, not after - Set up observability for agent behaviour (tracing, logging, cost and latency monitoring) and act on what it shows - Integrate LLMs (Claude, GPT and open-source models) with internal systems, data sources and third-party tools, including via MCP - Set engineering standards for AI work and collaborate within an adaptable fast pace environment What you'll bring - 5+ years in software engineering - A track record of shipping AI agents or LLM systems to production. We'll want to hear the war stories - Strong Python and/or TypeScript skills - Hands-on experience with tool use and function calling, multi-step agent orchestration, RAG and prompt engineering - A solid grasp of how LLM systems fail (hallucination, drift, prompt injection, runaway costs) and how to design around it - Experience with evals, testing and monitoring for non-deterministic systems - Cloud and deployment experience (AWS / GCP / Azure, containers, CI/CD) - Product instinct: you care whether something is useful, not just whether it's clever - Comfort working with ambiguity and owning outcomes end-to-end Nice to have - Experience with agent frameworks (e.g. LangGraph, Claude Agent SDK, OpenAI Agents SDK) and knowing when not to use one - MCP server development - Vector databases and retrieval optimisation - Security experience with AI systems (sandboxing, permissions, injection defence) - Experience in a startup or consultancy environment Why join us - Real ownership: your agents, your architecture, your impact - Work on production AI, not endless proofs of concept - Salary negotiable - On site setup, holiday allowance, learning budget, other benefits - A small, senior team where your work is visible and matters Interested? Apply below or message me directly. Bonus points if you tell us about an agent you've taken all the way to production: what broke, and how you fixed it. #AIEngineering #AIAgents #LLM #GenerativeAI #Hiring #MachineLearning