Backend Engineer (Payments & Microservices) - Remote

About this role

A remote, full-time Backend Engineer role focused on payments and microservices for a Lagos-based employer. The role involves building and maintaining payment integrations with PSPs across Africa, transitioning a Node.js/Express monolith to a microservices architecture, and ensuring secure, reliable financial data handling. Key work includes integrating providers like Fincra, Paystack, dLocal, and OmniBSIC; designing an event-sourced sub-ledger; and deploying services on Google Cloud Platform. The candidate should have strong TypeScript/Node.js skills, experience with payment systems, and familiarity with PostgreSQL and Drizzle ORM. The salary range is N550,000 to N650,000 per month, with remote collaboration in a nature-focused infrastructure context.

What you would do

• Integrate and maintain payment provider adapters for multiple African providers.
• Implement payment initiation, status tracking, webhooks, and transaction verification.
• Refactor a monolithic TypeScript/Express app into a modular microservices architecture.
• Develop three core services: Core API, Payments & Sub-Ledger, and Data Platform Service.
• Design and maintain an event-sourced double-entry sub-ledger for financial transactions.
• Implement idempotency, reconciliation, and robust ledger integrity.
• Build secure REST APIs and multi-tenant support; ensure reliable webhook processing.
• Deploy and operate backend services on Google Cloud Platform (Cloud Run).
• Ensure data consistency, transaction reliability, and scalable backend performance.
• Support monitoring, logging, and incident resolution in production.

What they are asking for

• Bachelor's degree with at least 3 years of backend engineering experience.
• Strong proficiency in TypeScript and Node.js (Express.js).
• Experience integrating PSPs/payments across African markets (Fincra, Paystack, dLocal, OmniBSIC or similar).
• Solid knowledge of PostgreSQL and modern ORMs such as Drizzle ORM.
• Experience with double-entry accounting, financial ledgers, or complex transactional systems.
• Understanding of event sourcing, idempotency, transaction consistency, and reconciliation.
• Experience refactoring monoliths to microservices or modular architectures.
• Strong REST API, webhooks, asynchronous processing, and error handling skills.
• Ability to work independently and in remote team environments.
• Strong analytical, problem-solving, and communication skills.

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