Senior Software Engineer (£90k-£115k + Equity) at YC-backed AI risk automation startup

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Job Title

Senior Software Engineer

Salary

£90k‑£115k + Equity

Location

London, UK

Company

YC-backed AI risk automation startup with $2.5M seed funding from Speedinvest and Shapers

Job Description

Join a founding engineering team building LLM‑powered agents that revolutionize how banks and fintech unicorns detect fraudulent businesses. You will translate novel AI capabilities into auditable user experiences, working directly with the CTO to replace manual risk investigations with intelligent automation for global financial institutions at the forefront of AI adoption.

Why this role is remarkable

  • Founding team impact where you will shape both the core product architecture and company culture from day one under a CTO who led fraud engineering for multi‑billion dollar transaction volumes.
  • Backed by Y Combinator (S23) and premier investors including Speedinvest, with an angel network featuring founders from N26, Allica Bank, and Billie.
  • Direct exposure to high‑growth fintech unicorns and global banks, solving mission‑critical financial crime problems using a cutting‑edge serverless and GenAI tech stack.

What You Will Do

  • Build and scale the core platform and integration infrastructure using NodeJS/TypeScript, React, and AWS Serverless to power autonomous LLM agents.
  • Work side‑by‑side with financial crime and risk teams to translate complex investigative workflows into intuitive, performant end‑user experiences.
  • Evolve data schemas to bring reliability to non‑deterministic LLM outputs, ensuring all AI‑driven insights are robust and auditable for enterprise compliance.

The ideal candidate

  • Proven track record of shipping production‑grade code in high‑growth startup environments, ideally with proficiency in TypeScript/Node and React.
  • High empathy and curiosity for solving non‑technical user problems, with the ability to navigate early‑stage ambiguity and take full ownership of projects.
  • Interest in the intersection of LLMs and financial risk, possessing the drive to learn a complex domain and iterate rapidly based on direct customer feedback.

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Company: Jack & Jill
Apply for the Senior Software Engineer (£90k-£115k + Equity) at YC-backed AI risk automation startup
Location: London
Job Description:

Job Title

Senior Software Engineer

Salary

£90k‑£115k + Equity

Location

London, UK

Company

YC-backed AI risk automation startup with $2.5M seed funding from Speedinvest and Shapers

Job Description

Join a founding engineering team building LLM‑powered agents that revolutionize how banks and fintech unicorns detect fraudulent businesses. You will translate novel AI capabilities into auditable user experiences, working directly with the CTO to replace manual risk investigations with intelligent automation for global financial institutions at the forefront of AI adoption.

Why this role is remarkable

  • Founding team impact where you will shape both the core product architecture and company culture from day one under a CTO who led fraud engineering for multi‑billion dollar transaction volumes.
  • Backed by Y Combinator (S23) and premier investors including Speedinvest, with an angel network featuring founders from N26, Allica Bank, and Billie.
  • Direct exposure to high‑growth fintech unicorns and global banks, solving mission‑critical financial crime problems using a cutting‑edge serverless and GenAI tech stack.

What You Will Do

  • Build and scale the core platform and integration infrastructure using NodeJS/TypeScript, React, and AWS Serverless to power autonomous LLM agents.
  • Work side‑by‑side with financial crime and risk teams to translate complex investigative workflows into intuitive, performant end‑user experiences.
  • Evolve data schemas to bring reliability to non‑deterministic LLM outputs, ensuring all AI‑driven insights are robust and auditable for enterprise compliance.

The ideal candidate

  • Proven track record of shipping production‑grade code in high‑growth startup environments, ideally with proficiency in TypeScript/Node and React.
  • High empathy and curiosity for solving non‑technical user problems, with the ability to navigate early‑stage ambiguity and take full ownership of projects.
  • Interest in the intersection of LLMs and financial risk, possessing the drive to learn a complex domain and iterate rapidly based on direct customer feedback.

#J-18808-Ljbffr…

Posted: May 18th, 2026