Machine Learning Engineer - Agentic AI & Reinforcement Learning

Experience developing multi-agent systems using LangGraph, AutoGen, smolagents or similar frameworks.

Experience with LLM fine-tuning, DPO, GRPO, PPO, RLHF or RLAIF.

Experience designing reward functions, graders or agent training environments.

Experience with Model Context Protocol and tool integration.

Experience deploying open-source language or vision-language models, including distributed training or GPU computing.

Experience applying AI to scientific, engineering, energy or geoscience workflows.

​ Why work with us?

Competitive salary commensurate with experience

Highly attractive bonus scheme

Initial 22 days annual leave with future increases, complemented by a flexible buying and selling holiday program

Hybrid working with two days at home, flexible working

Company pension with generous employer contribution

Wellbeing Unmind app – puts you in control of your mental health

A flexible benefits platform with numerous discount schemes - gym membership, restaurants, cinema tickets, and much more!

Cycle purchase scheme

Flexible Private Medical & Dental care programmes

Bank Holiday Swap - our holiday swap program allows you to change it for another day of your choice!

Buy & Sell Holiday Programme - you can buy extra holiday, sell unused holiday or even save it up!

Relaxed dress code policy

At Viridien, we foster a culture of continuous learning and provide tailored training programs through our Learning Hub, designed to enhance technical, commercial, and personal growth.

We encourage and actively support a strong sense of community, through volunteering and various company initiatives, as well as a strong company commitment to protecting our environment through sustainable solutions, energy saving and waste reduction enterprises.

At Viridien, we are committed to delivering a respectful, inclusive, and transparent recruitment experience.

Due to the high volume of applications we receive, we may not be able to provide individual feedback to every applicant. Only candidates whose qualifications closely match the role criteria will be contacted for an interview. We do, however, aim to share personalized feedback with those who progress to the first round of interviews and beyond.

We are also dedicated to ensuring that our hiring process accessible to all. If you require any reasonable adjustments to fully participate in the application or interview stages, please don’t hesitate to contact your recruiter directly.

We see things differently. Diversity fuels our innovation, we value the unique ways in which we differ, and we are committed to equal employment opportunities for all professionals.