BackendEngineer-SaaSplatform

## Accountabilities Maintain, develop, and enhance backend services powering a SaaS platform built with Node.js frameworks such as Express and NestJS using TypeScript. Design and optimize high-performance APIs supporting core features like campaign generation, template storage, and credit-based billing systems. Improve database efficiency by optimizing MongoDB queries, schema design, indexing strategies, and caching layers. Implement and manage Redis-based caching, pub/sub mechanisms, and asynchronous job processing using queues such as BullMQ or RabbitMQ. Monitor and maintain cloud infrastructure on AWS, including services like EC2, S3, Lambda, CloudWatch, and SES. Ensure system reliability, scalability, and security through best practices in authentication, authorization, rate limiting, and data protection compliance. Maintain API documentation and versioning using OpenAPI/Swagger standards. Write and maintain unit and integration tests to ensure robust and reliable backend systems. Troubleshoot and resolve production issues, ensuring minimal downtime and fast incident resolution. Requirements: 3–5 years of experience in backend development, ideally within SaaS or high-traffic API environments. Strong expertise in Node.js with TypeScript, using frameworks such as Express.js or NestJS. Solid experience with MongoDB, including schema design, indexing, and ORM tools such as Mongoose or Prisma. Hands-on experience with Redis for caching and pub/sub, as well as job queue systems like BullMQ or RabbitMQ. Familiarity with AWS cloud services such as EC2, S3, Lambda, CloudWatch, and SES. Experience building and deploying containerized microservices using Docker and CI/CD pipelines (e.g., GitHub Actions). Strong understanding of authentication and authorization mechanisms such as JWT, OAuth2, and role-based access control. Experience with logging and monitoring tools such as Winston, Pino, Prometheus, or Grafana. Experience with testing frameworks like Jest, Mocha, or Vites