MERN Stack Engineer - Backend

Job Title: Senior MERN Stack Engineer Backend Heavy + AWS Location: Remote EST Candidates Only Duration: Long-Term Contract Note: We are specifically looking for a backend-heavy MERN engineer, not a frontend-focused React developer Job Summary We are looking for a Senior MERN Stack Engineer with strong backend development and AWS experience to design, develop, and support scalable, high-performance applications and services. This is a backend-heavy position. The ideal candidate should have deep hands-on experience with Node.js, Express.js, REST APIs, MongoDB, microservices, and AWS, along with working knowledge of React.js. The engineer will work closely with product, architecture, DevOps, QA, and other engineering teams to build secure and reliable cloud-based solutions. Required Skills 8+ years of overall software development experience. Strong hands-on experience with Node.js and Express.js. Strong backend development experience using JavaScript and TypeScript. Strong experience designing and developing RESTful APIs and backend services. Experience building microservices and distributed applications. Strong experience with MongoDB, including schema/data modeling, aggregation, indexing, and performance optimization. Hands-on experience with AWS cloud services. Experience with AWS services such as: Lambda API Gateway ECS/EKS EC2 S3 DynamoDB SQS/SNS CloudWatch IAM Experience developing serverless and/or containerized applications on AWS. Strong understanding of API security, authentication and authorization, including OAuth/JWT. Experience integrating applications with third-party APIs and external systems. Experience with Docker and containerized deployments. Good understanding of CI/CD pipelines and modern DevOps practices. Experience with Git/GitHub and Agile development methodologies. Strong production troubleshooting, debugging, logging, and performance-tuning skills. Working knowledge of React.js and frontend integration. Excellent problem-solving and communication skills. Preferred Skills Experience with AWS CDK, CloudFormation, or Terraform. Experience with event-driven architecture using SQS, SNS, EventBridge, or Kafka. Experience with Kubernetes/EKS. Experience designing highly available and scalable cloud applications. Experience with observability and monitoring using CloudWatch or similar platforms. Experience with automated testing using Jest, Mocha, or similar frameworks. AWS certification is a plus.