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Principal Backend Engineer

Morr0 — United Kingdom · Posted ~2 hours ago

Lead Full-time

Skills

Backend development Payments Multi-currency ledgers Tax systems Workflow automation System architecture Scalability Reliability Backend systems Tax engines AI

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Summary ✨ AI‑Generated

Join a small, high-impact engineering team building financial infrastructure from the ground up. You will own core backend systems spanning payments, multi-currency accounting, taxation, and workflow automation, guide architecture from early design through production, and work directly with company leadership while solving complex reliability and scaling challenges.

Highlights

High-ownership backend engineering role at an early-stage financial technology company. You will build core financial infrastructure from scratch, influence architecture and technical direction, work closely with founders, and tackle demanding problems involving correctness, reliability, scalability, and international operations.

Description

Senior - Principal Backend Engineer | FinTech | London or Amsterdam Join an early-stage Fintech building AI-powered infrastructure to simplify how businesses operate across borders. International growth still comes with a lot of disconnected financial systems, manual processes and operational complexity. This team is bringing those pieces together into a platform that makes it easier for businesses to enter and operate in new markets. The role You’ll build core backend systems across payments, multi-currency ledgers, tax engines and workflow automation from scratch, taking ownership from early design decisions through to production. The engineering team is small, so you’ll have significant influence over the architecture, work directly with the founders and help decide how the platform develops as the business grows. Expect technically demanding work where correctness, reliability and scale matter, alongside the freedom to make decisions and see them through. The team You’ll join experienced engineers and operators who have helped build the likes of Revolut, Airwallex, Adyen & Yandex. They bring deep experience in payments and financial infrastructure, with strong funding behind them and plenty still to build. We’re looking for Strong backend engineering experience, ideally in fintech, payments or similarly complex systems.Fluency in a JVM language, preferably Kotlin.Sound judgement around architecture, data modelling and distributed systems.Someone comfortable taking a loosely defined problem and owning it through to delivery. Location: London or Amsterdam (onsite)