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Marrina Decisions

REMOTE (INDIA): Backend Engineer- SaaS platform

Posted 5 Days Ago
Remote
Hiring Remotely in India
Mid level
Remote
Hiring Remotely in India
Mid level
Maintain and enhance Node.js/TypeScript backend services for a SaaS platform, ensuring uptime, scalability, and high-performance APIs. Optimize MongoDB, implement Redis and job queues, manage AWS infrastructure, enforce security and compliance (GDPR, email handling), document APIs, write tests, and debug production issues.
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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.

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