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.
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
Company
Saturnos
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.
Jack & Jill
How Jack & Jill work together
Meet Jack
Jack gets to know what you're great at and what you want next, then searches 14 million jobs daily and introduces you directly to hiring managers.
How does this work?
Jack's an AI agent for job searching and career coaching. He works for you.
Jill is the AI recruiter working for the company. She recruits from Jack's network.
If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.