Senior GenAI Engineer (UK)

London

Full-Time

Senior (7+ yrs)

Engineering & Development

Posted on September 17, 2026

Pigment is seeking an experienced GenAI Engineer with a strong CS background and experience with Large Language Models (LLM) to join our innovative and fast-paced team.

In this role, you will work on cutting-edge NLP projects and play a crucial part in developing and refining our product. If you are passionate about machine learning, have a strong background in natural language processing, and thrive in a collaborative and high-impact environment, we'd love to hear from you!

What you will do :

- Work on bleeding edge multi-agents features. This includes the improvement of rolled-out features and the conception of new ones.

- Have the opportunity to work on the whole stack. The AI teams have frontend, backend (C# and python), infrastructure and CI skills

- Work on AI features built on top of the Pigment computation engine that provides determinism, auditability and data visualizations

- Work on AI features with an ambitious product vision, that are actively used, have a real world impact and are built to last (high test coverage - you can focus on building the next step, not chasing bugs)

🎧Listen to our podcast on Pigment’s GenAI team

#LI-GP1

#LI-REMOTE

Requierements

MS or Ph.D. in Computer Science, or experience writing production-grade code

Strong programming skills in Python, and/or C#, Java, nodejs, or equivalent

Hands-on experience on prompting large language models. It can be through the usage of vibe coding tools, or having implemented GenAI features

Knowledge about the recent developments of agents is a plus

Excellent problem-solving skills and ability to work independently

Strong written and verbal communication skills

Product oriented. GenAI challenges are mainly about translating a user need into a simple technical solution

If you are passionate about Generative AI and want to work on a cutting-edge business planning platform, we encourage you to apply for this exciting opportunity at Pigment.

Bonus: experience working with kubernetes

Bonus: experience building agents using langgraph

Bonus: experience building and shipping complex products on top of LLMs

Bonus: experience building evaluation pipelines

What you will get

Competitive package

Stock options to ensure you have a stake in Pigment's growth

The best health insurance with Alan Blue entirely free for you and your family

Weekly Lunch and Lunch vouchers (Swile card) to cover your lunch breaks with total flexibility

Subscription to Egym Wellpass (ex-Gymlib) for full access to gyms, studios, and wellness spaces across France

Trust and flexible working hours

Along with one company offsite every year, we have brand new offices at the heart of major cities including New York, San Francisco, Toronto, Paris, and London

High-end equipment (based on stock/availability) to do your work in the best conditions

Remote-friendly environment

We conduct background checks as part of our hiring process, in accordance with applicable laws and regulations in the countries where we operate. This may include verification of employment history, education, and, where legally permitted, criminal records. Any checks will be conducted lawfully prior to formal employment contracts being signed, with candidate consent, and information will be treated confidentially.

Pigment is an equal opportunity employer. We believe diversity is a strength and fosters innovation. We are committed to enabling everyone to feel included and valued at the workplace. All qualified applicants will receive consideration for employment without regard to age, color, family, gender identity, marital status, national origin, physical or mental disability, sex (including pregnancy), sexual orientation, social origin, or any other characteristic protected by applicable laws. We may process your personal data in accordance with our HR Data Protection Notice.

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