Generative AI Engineer

The Lanes Group

LLM EngineermidCambridge, England, UKhybridfulltimeSoftware DevelopmentPythonLarge Language Models (LLMs)Retrieval-Augmented Generation (RAG)Vector DatabasesOpenAI APIAnthropic APILangChainLlamaIndexposted 08 Sep
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Generative AI Engineer – Cambridge Location: Cambridge (Hybrid) Salary: £95,000 - £105,000 + Equity / Benefits About Our Client Our client is an AI-focused technology company developing next-generation products using large language models and generative AI. Following further investment, they are expanding the engineering team responsible for taking generative AI applications from prototype into production. The Role You will design and build production-grade generative AI features, working across LLM integration, retrieval systems, evaluation, prompting and application engineering. The role offers significant influence over technical direction and product development. Key Responsibilities * Build customer-facing applications powered by large language models. * Develop retrieval-augmented generation and semantic search systems. * Integrate commercial and open-source foundation models. * Design prompting, tool-use and agentic workflows. * Build evaluation frameworks for quality, reliability and safety. * Optimise latency, cost and performance of AI applications. * Work with Product and Engineering teams to take prototypes into production. * Track emerging AI techniques and assess their practical application. Skills \& Experience * Strong software engineering experience, ideally using Python. * Hands-on experience building applications with LLMs or generative AI. * Knowledge of RAG, embeddings, vector databases and model evaluation. * Experience with OpenAI, Anthropic, open-source models or comparable platforms. * Understanding of cloud infrastructure, APIs and production software systems. * Experience with LangChain, LlamaIndex or similar frameworks is advantageous. * Strong problem-solving skills and interest in rapidly evolving AI technology. Package * £95,000 - £105,000 + Equity / Benefits * Cambridge – hybrid working * Performance-related bonus and/or equity depending on role * Private healthcare * Enhanced pension contribution * 25 days annual leave plus bank holidays * Flexible working arrangements * Professional development budget * Clear progression within a growing technology function Apply If you are interested in this opportunity, please apply with your latest CV. Suitable applicants will be contacted to discuss the position, client and package in more detail.