Senior Software Engineer – Payments

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

📋 Description

• Design, develop, and manage payment-domain services.

• Integrate payment gateways and execute payment intent, authorization, capture, refund, payout orchestration, and reconciliation processes.

• Implement onboarding/KYC integration, configure merchants, establish settlement instructions, manage deductions, and align invoicing/merchant statements.

• Create idempotency, ledgers/events, and audit trails to support finance and compliance.

• Collaborate with PSP and partner tools, considering tri-party/sub-merchant aspects.

• Establish workflows for handling disputes/chargebacks and fraud.

• Work with Operations on runbooks and escalation procedures.

• Collaborate with Product, Legal/Compliance, Finance, and Support teams to translate requirements into safe, testable production behaviors.

• Enhance automated testing, ensure safe rollouts/canaries, improve observability, and refine incident response.

• Mentor engineers, lead design reviews, and contribute to shared standards and documentation.

⛳️ Requirements

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

• Hands-on experience with payment flows, including authorization/capture/refund, webhooks, and reconciliation.

• Understanding of money-correctness patterns such as idempotency keys, double-entry thinking, and auditability.

• Familiarity with PCI compliance, PII protection, secrets management, least privilege, and secure coding practices.

• Comfortable working in an Azure-first environment involving APIs, queues/eventing, and monitoring.

• Proficient in CI/CD and automated testing methodologies.

• Effective and clear communication with non-technical stakeholders in high-pressure situations.

• Experience with sub-merchant, marketplace, or Payfac-like operating models is a strong advantage.

• Knowledge of dispute tooling, card scheme regulations, 3DS/risk guidelines, or fraud platforms is a strong advantage.

🏝️ Benefits

• Quarterly team gatherings in one of our global offices.

• Competitive salary.

• High ownership and autonomy over the services you develop.

• Opportunity to work on revenue-critical production systems.

• Strong emphasis on security, reliability, and engineering best practices.

• A collaborative, international engineering team.

• Opportunities for learning, mentoring, and personal development.

• A positive, inclusive workplace environment.

• Trust to perform your best work and take ownership.