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# Machine Learning Engineer - Agentic AI & Reinforcement Learning

- **Company:** Developmentat Viridien
- **Location:** Oxford, UK
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Automated Storage and Retrieval Systems, Python (Programming Language), Machine Learning, Language Modeling, Reinforcement Learning, Supervised Learning, Pytorch, Large Language Models, Multi-Agent Systems, Generative AI, Information Technology, Virtual Agents
- **Published:** August 23, 2026
- **Apply:** https://www.apply4u.co.uk/jobs/machine-learning-engineer-agentic-ai-reinforcement-learning/44896178

## About the Role

responsibilitiesDesign and develop single-agent and multi-agent systems for complex workflows.Build reasoning, planning, task decomposition, memory, tool-use and agent-collaboration capabilities.Integrate LLMs, vision-language models, retrieval systems and domain-specific tools.Fine-tune and adapt foundation models using supervised learning, preference optimisation and reinforcement learning where appropriate.Develop training environments, reward functions, graders and feedback mechanisms.Build evaluation, guardrail and monitoring approaches for agent reliability.Convert prototypes into production-ready APIs, services and reusable software components.Experience and skillsRequired Degree in computer science, artificial intelligence, machine learning, engineering or a related discipline, or equivalent practical experience.Strong Python programming and software-engineering skills.Experience developing machine-learning, generative AI or LLM applications.Practical experience with PyTorch, JAX



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