Senior Software Engineer - Stablecoin Payments in London

Build the financial infrastructure that moves money globally. At Noah, we're building the infrastructure layer that powers the next generation of global payments. We believe money should move as easily as information. Today, cross-border payments are slow, fragmented and expensive. We're changing that with stablecoin-native infrastructure that connects banks, payment rails and digital assets through a single API. From instant payouts in 70+ countries to programmable compliance and real-time settlement, we're helping companies like fintechs, wallets, payroll providers and global marketplaces move money faster, cheaper and more transparently.

This isn't another backend engineering role. You'll join the team responsible for Noah's core payments engine - the systems that orchestrate money movement, settlement, ledgering, compliance and blockchain interactions at global scale. You'll design and build infrastructure that processes real customer funds, powers millions of dollars in payment volume, and becomes the foundation for products used around the world. If you enjoy solving hard distributed systems problems, thinking deeply about reliability and building products from first principles, you'll feel at home here.

What you'll build:

• The core payment orchestration engine.
• Stablecoin settlement infrastructure across multiple blockchain networks.
• Internal ledger and balance management systems.
• Banking and payment rail integrations.
• Event-driven services and workflow orchestration.
• APIs powering global payouts, account issuance and hosted checkout.
• Infrastructure for reconciliation, observability and resilience.

What you'll do:

• Design, build and ship highly reliable backend services in Go.
• Build distributed systems that prioritise correctness, performance and fault tolerance.
• Own services end-to-end, from architecture and implementation to monitoring and scaling.
• Improve the performance and resilience of our payment infrastructure.
• Collaborate closely with Product, Compliance and Forward Deployed Engineers to launch customer-facing capabilities quickly.
• Help define engineering standards and influence how we build as the company scales.
• Contribute to technical design discussions and challenge assumptions.

What we're looking for:

• Strong experience building backend systems in Go (or another systems language with willingness to work in Go).
• Experience within the Payments and/or Crypto industry.
• Experience designing distributed, event-driven or high-throughput systems.
• A deep understanding of APIs, databases, messaging systems and AWS cloud infrastructure.
• Experience building production systems where reliability and correctness matter.
• Strong product instincts and a bias towards shipping.
• Excellent communication and ownership.

What great looks like:

• You don't wait to be told what to build.
• You enjoy taking ambiguous problems, designing elegant solutions and shipping them quickly.
• You care about clean architecture but know when pragmatism wins.
• You obsess over reliability because real money is on the line.
• Most importantly, you're excited by building something that hasn't existed before.

Why Noah?

• You'll join at the right stage. We're still small enough that every engineer shapes the company, but we're solving infrastructure problems that normally exist at companies hundreds of people larger.
• You'll own meaningful systems. No feature factories. No tiny tickets. Real ownership over critical infrastructure.
• You'll work with exceptional people. A small, high-performing engineering team with a high bar for quality, speed and collaboration.
• You'll build for global scale. Everything we build is designed to move money across borders, currencies and payment networks.