(INDIA): Backend Engineer- SaaS platform

Responsibilities:

- Maintain and enhance the backend services powering the SaaS platform (Node.js/Express/NestJS with TypeScript).

- Ensure uptime, scalability, and performance of APIs handling campaign generation, template storage, and credit-based billing.

- Optimize MongoDB queries, indexes, and caching strategies for high-performance APIs.

- Implement and manage Redis, job queues, and async workflows.

- Monitor and maintain AWS infrastructure: EC2, S3, CloudWatch, Lambda, SES.

- Implement security best practices: API authentication, rate-limiting, GDPR compliance, email data handling.

- Maintain API versioning and documentation (OpenAPI/Swagger).

- Write unit and integration tests to ensure code quality and reliability.

- Debug and resolve complex production issues efficiently.

Required Skills:

- Strong proficiency in Node.js with TypeScript (Express.js or NestJS).

- Experience with MongoDB, schema design, and ORMs (Mongoose, Prisma).

- Experience with Redis (pub/sub, caching) and job queues (BullMQ/RabbitMQ).

- Familiarity with AWS services: EC2, S3, CloudWatch, SES, Lambda.

- Dockerized microservices and CI/CD pipelines (GitHub Actions, or similar).

- Knowledge of authentication & authorization (JWT, OAuth2, role-based access).

- Basic Logging & monitoring experience (Winston, Pino, Prometheus/Grafana).

- Unit & integration testing experience (Jest, Mocha, Vitest).

- Knowledge of email compliance tools (SpamAssassin, DKIM/SPF/DMARC) is a plus.

Experience:

- 3–5 years in backend development.

Prior experience in SaaS applications, high-traffic APIs, or campaign/marketing platforms is preferred.