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

Job Title

Platform Engineer

Company Description

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

Location

London, UK

Salary

Not Disclosed

Job Description

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.

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.

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.

The Ideal Candidate

• 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.

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