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Saturnos

Saturnos

Job listing

London, United KingdomNot Disclosed

Platform Engineer at YC-backed Series A fintech building AI-native infrastructure

Join an elite engineering team from Cred and Postman to build the AI-native backbone of the £100B+ financial advice industry. This YC-backed Series A startup is already trusted by 6,500+ advisers and is cashflow positive. 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.

Overview

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.

Company

Saturnos

Saturnos

SoftwareLondon, United KingdomSeries A (VC-backed)

YC-backed Series A startup building an AI-native operating system for the £100B+ financial advice market

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

Responsibilities

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.

Candidate profile

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.

What makes it remarkable

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.

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