Rishabh S

Sr. software engineer

Company

Aug 2022 - Present • 3 yrs 9 mos

• Led backend architecture for an LMS platform consisting of 4–5 microservices, designing API contracts, JWT-based authentication, and DynamoDB schemas for scalability. • Handled production traffic of ~50 RPS and ~10,000 daily users while maintaining 99.9% uptime using proactive monitoring and debugging. • Reduced API p95 latency from 700ms to 400ms by introducing Redis caching, optimizing DynamoDB access patterns, parallelizing service calls, and improving infrastructure scaling. • Designed and implemented rate limiting to prevent misuse and handle traffic spikes safely. • Built 12–15 REST APIs per service with authentication, caching, structured logging, and error handling. • Implemented CloudWatch logging and monitoring for production observability and faster incident resolution. • Architected an event-driven transcript generation system: Form → SQS → Gateway Service → SQS → Lambda → DynamoDB. • Used Kafka and AWS SQS for inter-service communication and background workflows. • Worked extensively with AWS EC2, Lambda, API Gateway, DynamoDB, S3, and CloudWatch. • Set up CI/CD using Docker and AWS CodePipeline for the transcript microservice. • Reduced S3 costs by implementing automated cleanup via S3 Lifecycle Policies. • Debugged and resolved a critical production API issue quickly, minimizing downtime. • Mentored 4 junior engineers, assigned tasks, and conducted PR reviews to maintain code quality. Frontend Ownership — Digital Learning Platform (50,000+ Users) • Owned and developed the Onboarding Application and Teacher Dashboard end-to-end using Next.js, React, and Nuxt with API integrations. • Improved Landing Page FCP and LCP by ~0.5 seconds using image compression, lazy loading, and WebPageTest-driven optimizations. • Implemented WCAG AA accessibility standards (ARIA roles, contrast compliance, keyboard navigation) audited by DAC. • Refactored legacy frontend and backend modules to improve maintainability and reduce production bugs.