Platform Engineer

Job Title

Platform Engineer

- Series A, YC-backed AI fintech

Join a high-caliber engineering team from Cred and Postman building the AI-native operating system for the £100B+ financial advice industry. You will design and own core infrastructure, data pipelines, and compliance engines that automate 70% of manual administration. This is a critical role building the bulletproof foundation for Saturn's next 50x growth phase.

London, UK

• Work at the intersection of AI, regulation, and fintech within a cashflow-positive, Series A startup backed by Y Combinator.
• High-impact ownership over core infrastructure where correctness is paramount, serving 600+ firms and 6,500+ advisers across the UK.
• Join an elite engineering culture with veterans from Gojek and Slice, offering significant equity and a path to massive scale.

• Design and maintain scalable backend infrastructure and internal platforms using Go, Type Script, and Python on AWS.
• Own the reliability and observability of core financial services including data ingestion pipelines and AI/LLM infrastructure.
• Build robust, well-tested connectors for third-party financial platforms and back-office systems to serve as Saturn's system of record.

• Has 3-4 years of experience building production backend systems, preferably in fintech or high-stakes, data-critical environments.
• Demonstrates strong hands‑on proficiency in Go and Type Script with a deep understanding of distributed systems and event‑driven architecture.
• Possesses systems‑level thinking and an obsession with data integrity, auditability, and building fault‑tolerant services that handle sensitive financial data.