Backend Engineer – SaaS platform

Filled
January 13, 2026
Apply Now

Job Description

Job Details

  • Company Name: Marrina Decisions
  • Employment type: Full time
  • Experience: Fresher
  • Salary: $10 to $15 Hourly
  • Location : Remote Option Available

Work schedule : 5 days a week

Job Description:


• 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

Requirements:


• 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)