We are seeking a Senior Full Stack Engineer MERN with deep expertise in modern JavaScript ecosystems and cloud architecture You ll be working on complex application modernization initiatives focusing on transforming legacy systems into scalable cloud-native applications Core Technical StackFrontend React js with Hooks Context API Next js 14 Redux RTK TypeScript Tailwind CSS Material-UI Chakra UI Backend Node js NestJS Express js GraphQL Apollo Server WebSocket Cloud Infrastructure AWS Services ECS Lambda API Gateway S3 CloudFront RDS DynamoDB SQS SNS ElastiCache Infrastructure as Code Terraform CloudFormation Containerization Docker Kubernetes ECS Databases Caching MongoDB PostgreSQL Redis Elasticsearch Authentication Security OAuth2 0 OIDC JWT AWS Cognito SAML2 0 Key Technical Responsibilities System Architecture Development 70 Design and implement microservices architectures using Node js Nest JS focusing on scalability and performance Build reusable component libraries and establish frontend architecture patterns using React js and Next js Implement real-time features using WebSocket Socket io for live data updates and notifications Design and optimize database schemas write complex queries and implement caching strategies Develop CI CD pipelines with automated testing deployment and monitoring Create and maintain infrastructure as code using Terraform CloudFormation Implement security best practices and compliance requirements SOC2 GDPR Examples of Current ProjectsModernizing a monolithic PHP application into microservices using Nest JS and React Implementing event-driven architecture using AWS Event Bridge and SQS Building a real-time analytics dashboard using WebSocket and Time-series databases Optimizing application performance through caching strategies and CDN implementation Developing custom hooks and components for shared functionality across applications Required Technical ExperienceExpert-level proficiency in JavaScript TypeScript and full-stack development Deep understanding of React js internals hooks and performance optimization Extensive experience with Node js backend development and microservices Solid background in cloud architecture and AWS services Hands-on experience with container orchestration and infrastructure automation Proven track record of implementing authentication and authorization systems Experience with monitoring logging and observability tools About Us TechAhead is a global digital transformation company with a strong presence in the USA and India We specialize in AI-first product design thinking and bespoke development solutions With over 15 years of proven expertise we have partnered with Fortune 500 companies and leading global brands to drive digital innovation and deliver excellence At TechAhead we are committed to continuous learning growth and crafting tailored solutions that meet the unique needs of our clients Join us to shape the future of digital innovation worldwide and drive impactful results with cutting-edge AI tools and strategies