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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer (LLM Engineering), London - **Company:** Isomorphic Labs - **Location:** London, UK - **Salary:** £82,565.0 - **Contract:** Permanent contract - **Skills:** Artificial Intelligence, Python (Programming Language), Software Engineering, Systems Architecture, Google Cloud, Large Language Models, Model Validation, Machine Learning Operations, Software Coding - **Published:** August 29, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5859785021 ## About the Role * Software Engineering: Strong coding skills (Python) with a focus on production-grade, maintainable systems. * System Design: Ability to architect and maintain (IaC) complex systems across multiple verticals (Security, UX, and Scalability) in the cloud. * LLM Internals: Deep understanding of how models are trained, how they work internally, and their inherent limitations. * LLM Serving stack: Experience with the LLM serving stack (e.g. vLLM) for open weight models for bringing the latest models to internal users. * ML Literacy: Experience evaluating probabilistic ML systems and managing model "tool use", contexts and loops. * First-Principles Thinking: A hype-detached approach to solving problems and selecting the right tech stack. * Communication: Excellent stakeholder management and the ability to explain technical risks to non-experts. Nice to have * Applied LLM Experience: Prior success building and scaling systems centered around Large Language Models. * ML Infrastructure: Experience setting up the underlying hardware or orchestration for ML systems. * GCP: Prior experience building and deploying systems on Google Cloud (GCP). * Scientific Domain: Interest or experience in biology, chemistry, or drug discovery; an interest in applying AI to scientific discovery. * Fast-Moving Tooling: Familiarity with the latest in agentic tooling and developer frameworks. Culture and values ## Description As a member of the LLM Engineering team, you will work on a subset of the following: * System Architecture: Architect LLM-integrated systems by incorporating scalability, security, and user experience considerations from the earliest stages of development. * Operational Excellence: Enable telemetry, observability, governance and cost management. Build platform components and tools for routing and making optimal use of various models. * LLM & Agentic Infrastructure: Implement advanced context management, tool-use (MCP), skill tooling, and RAG to enhance research workflows and help scale our agentic infrastructure. * Evaluation Frameworks: Build rigorous testing for probabilistic systems to ensure model reliability and safety. Build and maintain evals for different tasks. * Agentic Tooling: Develop the internal frameworks and IDE integrations to leverage agentic coding and agentic workflows at scale. Contribute to shaping best practices and providing a great user experience. * Refinement & Training: Support fine-tuning and RL efforts in collaboration with AI researchers to optimise models for complex biological and chemical data. * Strategic Collaboration and Solutioning: Partner with researchers to translate scientific needs into technical AI specifications. Partner with other parts of the business to unlock LLM-based use-cases. ## Related Videos - [The Cloud is Calling: Answer with In-Demand Skills](https://www.wearedevelopers.com/videos/945-the-cloud-is-calling-answer-with-in-demand-skills) - [Unleashing the Power of Developers: Why Cybersecurity is the Missing Piece?!?](https://www.wearedevelopers.com/videos/712-unleashing-the-power-of-developers-why-cybersecurity-is-the-missing-piece) - [Introduction to Responsible AI: Balancing Value and Risk](https://www.wearedevelopers.com/videos/1972-introduction-to-responsible-ai-balancing-value-and-risk) - [How to Avoid LLM Pitfalls - Mete Atamel and Guillaume Laforge](https://www.wearedevelopers.com/videos/1328-how-to-avoid-llm-pitfalls-mete-atamel-and-guillaume-laforge) - [Cloud Run- the rise of serverless and containerization](https://www.wearedevelopers.com/videos/106-cloud-run-the-rise-of-serverless-and-containerization) - [Three years of putting LLMs into Software - Lessons learned](https://www.wearedevelopers.com/videos/1508-three-years-of-putting-llms-into-software-lessons-learned) ## Related Articles - [What Are Large Language Models?](https://www.wearedevelopers.com/magazine/304-what-are-large-language-models) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [How to Become an AI Engineer](https://www.wearedevelopers.com/magazine/331-how-to-become-an-ai-engineer) - [MLOps And AI Driven Development](https://www.wearedevelopers.com/magazine/82-mlops-and-ai-driven-development) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023)