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Jack & Jill

AI Engineer

Department
Engineering
Job Type / Location
London
Experience Required
5+ years
Posted On

About the Role

You will own the AI and data infrastructure at the heart of an automation platform replacing $100B in manual bank processing. You'll build agentic systems and LLM pipelines using LangChain and Python, working directly with the world’s largest financial institutions to automate reasoning and complex decision-making workflows at scale.

Why this role is remarkable

  • Ship to production within your first sprint, building tools used by global giants like Worldpay, Barclaycard, and NatWest.
  • Backed by Northzone and Connect Ventures (investors in Spotify and Klarna), you'll join an elite team of ex-founders in a high-performance environment.
  • Direct influence on the product roadmap while reporting to the CEO and CTO, owning the AI quality bar for mission-critical banking systems.

What You Will Do

  • Build agentic workflows that automate reasoning, data analysis, and decision-making using LangChain, n8n, and Python.
  • Design and iterate on prompts and LLM integrations to drive reliable agent behavior across production financial systems.
  • Mine KYC/KYB signals from unstructured data to design pricing experiments and risk models for merchant onboarding.

The ideal candidate

  • AI-first engineer with hands-on experience in agentic frameworks like LangChain, Temporal, or n8n and prompt engineering.
  • Proficient in Python for modeling and ETL, with exposure to AWS data stacks including Glue, Athena, and Airbyte.
  • Strong stakeholder instincts with the ability to lead technical, data-driven conversations directly with banking partners and executives.

View Assessment Process

Think you'll be a good fit?