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Confidential company

Job listing

London, United Kingdom£80K - £120K + Equity

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.

Overview

Role overview

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.

Company

About the company

VC-backed fintech AI startup

Responsibilities

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.

Candidate profile

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.

What makes it remarkable

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.

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