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AI Engineer at Gradient Labs

Join the ex-Monzo leadership team at a high-growth London startup that is reinventing customer support for regulated industries. As an AI Engineer, you will design autonomous agents capable of handling complex financial interactions in real-time. This is a rare opportunity to join a world-class founding team at the ground floor, offering significant equity and the chance to build the next generation of fintech infrastructure in a hybrid London environment.

About this role

Role overview

Join the team reinventing customer support for regulated industries through sophisticated agentic AI. You will build world-class systems that handle complex interactions in financial services, moving beyond simple chatbots to autonomous agents. Working alongside former Monzo scaling experts, you'll deploy cutting-edge ML infrastructure to solve high-stakes problems for global enterprises.

About the company

Software

Gradient Labs is a London-based AI startup building a compliant customer operations platform powered by procedural AI agents that automate complex, high‑risk customer support workflows end to end, with an initial focus on regulated industries such as financial services. Its AI agent (Otto) learns company-specific products and processes to reliably and safely resolve a large share of inquiries while providing deep quality control, observability, and safety features (e.g., audit logs, role-based permissions, GDPR compliance, multi‑model support, auto‑QA). Founded in 2023 by Monzo alumni Dimitri Masin, Neal Lathia, and Danai Antoniou, the company has raised venture funding (including a 2025 Series A) and reports customer programs achieving higher CSAT than human agents and significant cost reductions.

What you'll do

What you will do

  • Design and deploy autonomous AI agents capable of resolving complex customer support inquiries in real-time.
  • Develop robust machine learning infrastructure to power agentic workflows across highly regulated environments.
  • Collaborate with the Chief Scientist to implement industry-leading fraud detection and operational automation systems.

Who you are

Who this is a fit for

  • Proven experience building and scaling machine learning systems or AI-driven products in a production environment.
  • Strong engineering fundamentals with the ability to navigate the intersection of LLMs and traditional backend architecture.
  • Entrepreneurial mindset comfortable with the pace of a fast-growing startup and a desire for significant equity ownership.

Why this role

Why this role is remarkable

  • Work directly with a founding team that scaled Monzo from its 20th employee to a global banking leader.
  • Build the first AI support agent specifically engineered for the rigorous demands of the financial services sector.
  • Join a high-traction startup that hit $1M ARR in just four months and recently raised a $13M round.

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