Skills

Research Training

Job Specifications

AI Engineer - Stealth AI Startup (London / Paris / Europe) (RL/Reinforcement Learning)

Package: £100,000-£200,000 + strong early-stage equity

Location: London/Paris hubs, or elsewhere in Europe with occasional travel to be with the team (remote friendly/hybrid - however you like to work)

Bloom have partnered with one of the fastest-growing AI companies in Europe to help them hire their next phase of AI Engineers and Software Engineers - a rare opportunity to join a team at this stage, with super strong traction and building at incredible pace. Roles like this don’t come around often.

This business is led and founded by a proven founding team with a super impressive and strong track record of building, scaling, and successfully exiting tech companies - with a very strong technical pedigree

They’re building the infrastructure for the next generation of AI - where agents don’t just learn from static data, but through active experience. Think interactive, resettable digital worlds where AI can explore, act, and learn - from simple websites to complex applications.

This is your chance to help build the digital training ground for foundational AI Agents

What you’ll be working on

Build agentic, human-in-the-loop workflows - researching, prototyping, and shipping AI-driven processes that generate high-quality data, tasks, and environments for customers.
Push state-of-the-art performance - define success metrics, run rigorous evaluations, dig into data, and continually improve system reliability and output quality.
Work at the frontier of AI - apply and innovate on cutting-edge techniques in agentic pipelines, context engineering, and model tuning/post-training to maximise system capability.
Productionise research - partner with software engineering to turn new methods into scalable, observable, high-impact production features.

If you’re excited by the idea of building the simulation layer for intelligent agents, this is one of those rare moments where you can shape an entirely new category of AI infrastructure.

Please apply or DM me for details - they’re still in stealth, so we’ll share more privately

Alex@wearebloom.io

About the Company

Product & Engineering Recruitment, with a human touch & a dash of va va bloom. We bring together years of experience within Product Management and Engineering. Bloom support and enable early stage startups, scaleups and leading global tech giants to build and nurture high-performing teams. We founded bloom five years ago, with a vision to create a vibrant community, that fosters growth, learning, and connections. Eighteen months into our journey, in April 2021, we also launched our mentorship programme. It's been an in... Know more