You will lead the development of internal LLM and agentic architectures designed to enhance operational workflows within financial services. This role involves fine-tuning models, building robust evaluation frameworks, and deploying custom AI features. You will work at the intersection of machine learning and product engineering to deliver high-impact automation systems.
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AI Research Engineer at VC-backed fintech AI startup
Are you ready to shape the future of financial operations with state-of-the-art AI? This well-funded London startup is looking for an AI Research Engineer to build in-house LLMs and agentic systems that tackle complex automation challenges. With a focus on fine-tuning, evals, and custom model training, you'll have significant influence over the company's technical strategy while enjoying a competitive salary, equity refreshes, and an outcome-obsessed culture. If you have 3+ years of experience and a passion for translating research into high-impact product features, this is your chance to join an elite team at the ground floor.
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Location
London, United Kingdom
Compensation
£80k-£120k + Equity
Company
Confidential company
Role overview
About the company
VC-backed fintech AI startup
What you will do
- Build and iterate on custom LLM capabilities and agentic systems, integrating them into production features.
- Design rigorous evaluation benchmarks and data pipelines to quantify model performance and prevent regressions.
- Develop fine-tuning and distillation loops leveraging human-in-the-loop feedback to optimize model behavior.
Who this is a fit for
- 3+ years of experience in AI research or engineering roles, specifically building agentic or LLM-based systems.
- Hands-on expertise in prompt engineering, fine-tuning pre-trained models, and managing MLOps pipelines.
- Strong product mindset with the ability to translate complex research into scalable, customer-facing solutions.
Why this role is remarkable
- Significant ownership over the AI strategy at an early-stage startup backed by top-tier VCs.
- Opportunity to work on cutting-edge agentic systems and vision models in a high-stakes production environment.
- Competitive package including equity refreshers and flexible travel policies for 4 weeks a year.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.
I recruit from Jack’s network and make the intro when I spot a great match.And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
Meet Jack
What happens next?
Jack’s an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and Confidential company wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.