Senior Software Engineer – Payments

This is a fully remote position, open to applicants in United Kingdom.

📋 Description

• Take charge of and enhance OrderYOYO's payment functionalities — facilitating KYC onboarding, deductions, timing for settlements/payouts, dispute management, and merchant invoicing — all while elevating reliability, security, and engineering excellence in one of our most vital business areas.

• Develop, construct, and manage payment-domain services, which include gateway integrations and processes for payment intent/authorization/capture/refund, payout orchestration, and reconciliation.

• Establish marketplace capabilities where applicable: onboarding/KYC integration, merchant setup, settlement instructions, deductions, and alignment of invoicing/merchant statements.

• Create solid “flow-of-funds” building blocks — idempotency, ledgers/events, and audit trails — that can be fully supported for finance and compliance purposes.

• Integrate with PSP and partner tools, paying close attention to tri-party/sub-merchant implications where necessary.

• Set up dispute/chargeback and fraud management touchpoints throughout internal workflows and PSP tools, collaborating with Ops on runbooks and escalation paths.

• Work closely with Product, Legal/Compliance, Finance, and Support to translate requirements into secure, testable production behavior.

• Enhance engineering quality in a rapidly changing domain through automated testing, safe rollouts/canaries, observability, and incident-response enhancements — while mentoring engineers, leading design reviews, and contributing to shared standards and documentation.

⛳️ Requirements

• Strong background in backend engineering within distributed systems — including microservices, asynchronous processing, resilient APIs, and eventual consistency.

• Experience in production environments with payment processes (auth/capture/refund, webhooks, reconciliation) and “money correctness” practices such as idempotency keys, double-entry logic, and auditability.

• A robust security mindset: understanding of PCI compliance, PII protection, secrets management, least privilege principles, and secure coding practices.

• Proficiency in working within an Azure-first environment (APIs, queues/eventing, monitoring), complemented by strong CI/CD and automated testing methodologies.

• Effective and confident communication skills with non-technical stakeholders in high-pressure situations — including incidents, financial discrepancies, and compliance inquiries.

🏝️ Benefits

• Competitive salary

• A remote role — work from anywhere you are most productive, with quarterly in-person gatherings at one of our global offices.

• High level of ownership and autonomy.

• Clear pathways towards Tech Lead / Staff Engineer roles.

• An opportunity to engage with revenue-critical production systems.

• A strong emphasis on security, reliability, and engineering best practices.

• A collaborative, international engineering team.

• A genuine focus on learning, mentoring, and long-term professional growth.