Backend Developer at CredPal

Purpose Statement:

• We are seeking a talented and passionate Mid-Senior Backend Engineer with strong NestJS experience and a solid understanding of distributed, event-driven systems to join our engineering team. Your role will be crucial in designing, building, and maintaining backend services that power core financial products. You’ll work in a microservices architecture, handling transactional data, background processing, and third-party integrations. This role suits an engineer who cares deeply about correctness, reliability, and scale.

Responsibilities

Backend & API Development

• Build and maintain backend services using NestJS, Node.js, and TypeScript.
• Design and expose secure, well-structured REST APIs for web, mobile, and partner systems.
• Implement core fintech features such as wallets, transactions, cards, lending, savings, and disbursements.
• Integrate with external services including payment gateways, KYC providers, and banking APIs.

System Design & Architecture

• Develop services within a microservices architecture.
• Implement event-driven workflows using RabbitMQ.
• Design systems with focus on idempotency, fault tolerance, and data consistency.
• Build and maintain background jobs and workers.

Data & Storage

• Design and manage relational data using MySQL.
• Use MongoDB for document-based and non-relational workloads.
• Implement caching and fast data access using Redis.
• Ensure accurate transaction records and reconciliation logic.

Infrastructure & Reliability

• Containerize services using Docker and work closely with infrastructure teams on deployment.
• Write unit and integration tests to ensure system reliability.
• Participate in code reviews and architectural discussions.
• Monitor and improve service performance and stability.

Collaboration & Ownership

• Work closely with Product, Frontend, Mobile, and DevOps teams.
• Take ownership of services from design through production.
• Mentor junior engineers and uphold engineering best practices.

Requirements

• Minimum 4 - 6years of professional backend engineering experience.
• Strong production experience with NestJS.
• Deep understanding of Node.js and TypeScript.
• Experience working with MySQL and MongoDB.
• Hands-on experience with RabbitMQ and asynchronous processing.
• Experience using Redis for caching or distributed locks.
• Experience containerizing applications using Docker.
• Solid understanding of REST API design and backend security fundamentals.

Nice-to-Have

• Prior experience in fintech, payments, lending, wallets, or cards.
• Experience building or maintaining ledger-based systems.
• Familiarity with observability tools (logs, metrics, tracing).
• Experience working in high-traffic or regulated environments.
• Mentorship or technical leadership experience.

What Success Looks Like

• You ship reliable backend services that handle real money safely.
• You reduce incidents through better design and testing.
• You improve scalability and performance of existing systems.
• You help raise backend engineering standards at CredPal.