REMOTE (INDIA): Backend Engineer - SaaS platform

The Backend Engineer will maintain and enhance backend services for a SaaS platform using Node.js, Express, or NestJS with TypeScript. Responsibilities include ensuring API uptime, scalability, and performance for campaign generation, template storage, and credit-based billing. Optimizing MongoDB queries, indexes, and caching strategies is necessary for high-performance APIs. The role involves implementing and managing Redis, job queues, and asynchronous workflows. Monitoring and maintaining AWS infrastructure such as EC2, S3, CloudWatch, Lambda, and SES is required. Security best practices like API authentication, rate-limiting, GDPR compliance, and email data handling must be applied. Maintaining API versioning and documentation with OpenAPI/Swagger is essential. Writing unit and integration tests ensures code quality and reliability. Debugging and resolving complex production issues completes the key duties.