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Platform Engineer at Saturnos

Join an elite engineering team from Cred and Postman to build the AI-native backbone of the £100B+ financial advice industry. As a Platform Engineer, you'll own the core infrastructure—data pipelines, LLM integrations, and compliance engines—using Go and TypeScript. If you are a systems-thinker who thrives on building bulletproof, high-stakes financial infrastructure in a tight-knit, on-site London team, this is your chance to join a company on a path to 50x growth.

About this role

Role overview

You will design and own the core infrastructure powering a compliance and workflow engine trusted by 600+ firms. As a backend-focused engineer, you will build the reliable data pipelines, LLM infrastructure, and third-party integrations necessary to automate 70% of financial advisers' administrative workload, ensuring system correctness and auditability at scale.

About the company

SoftwareLondon, United KingdomSeries A (VC-backed)

Saturn fintech Limited is a UK-registered software platform provider specializing in an AI-powered operating system for wealth management. Their platform automates investment research, compliance, and back-office workflows for wealth managers, significantly reducing operational costs and increasing efficiency. The company aims to make wealth management more accessible and scalable by automating manual compliance and administrative tasks, enabling wealth managers to focus more on client engagement and growth. They provide compliance services, back-office automation, and AI-driven tools tailored to the needs of wealth management firms.

Backed by Singular, Shapers, Y Combinator, Zeno Ventures.

What you'll do

What you will do

  • Design and maintain scalable backend services using Go and TypeScript as the bedrock of the adviser-facing platform.
  • Manage and scale AI infrastructure, including LLM API integrations and proprietary compliance rule engines.
  • Build robust, fault-tolerant connectors for third-party financial platforms and back-office systems to serve as a secure system of record.

Who you are

Who this is a fit for

  • Has 3+ years of experience building production-grade backend systems, specifically within fintech, payments, or regulated environments.
  • Demonstrates strong hands-on proficiency in Go and/or TypeScript alongside cloud infrastructure expertise (AWS preferred).
  • Possesses a deep understanding of distributed systems and event-driven architecture with an obsession for data integrity and system reliability.

Why this role

Why this role is remarkable

  • Join an elite engineering team with roots at high-growth unicorns like Cred, Postman, Gojek, and Slice.
  • Work at the cutting edge of fintech and AI, building the foundational systems for a cashflow-positive startup with a path to 50x revenue growth.
  • Direct ownership over critical financial infrastructure where correctness and reliability are paramount, rather than just building surface-level features.

Jack & Jill

How Jack & Jill work together

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Jill
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