anantasharma

Built back-end features in NestJS with PostgreSQL and Prisma ORM and frontend pages in Next.js with Tailwind CSS within structured sprint and code-review cycles alongside senior engineers.

Served as end-to-end technical owner across 3-4 concurrent client projects, architecting full-stack systems from database schema and API design through Next.js frontend implementation, deployment, and live production support. Architected NestJS/TypeScript REST APIs applying SOLID principles with modular structure, typed DTOs, RBAC guards, and interceptors, cutting API development time by approximately 40% through reusable patterns shared across all client projects. Integrated Stripe payment flows and webhook handlers for async payment state management across 2 production applications; configured MinIO S3-compatible object storage for media and document upload pipelines with presigned URL access. Built real-time features with Socket.IO in NestJS WebSocket gateways supporting 500+ concurrent connections at sub-100ms latency; decoupled 3 async workloads using RabbitMQ and BullMQ, cutting average API response time by approximately 60%. Containerised 4 production stacks with Docker and Docker Compose; automated GitHub Actions CI/CD pipelines, reducing deployment time from approximately 2 hours to under 15 minutes; added Sentry error tracking and Winston logging across all services. Developed Next.js App Router frontends with React, applying server components on performance-critical paths and client components for interactive features, maintaining fast Core Web Vitals across all client sites.

Developed and maintained production back-end services in NestJS and Express.js, building REST APIs with typed DTOs and class-validator, authoring Prisma ORM queries, and managing schema migrations across MySQL and MongoDB under active production load. Integrated AWS S3 for file storage pipelines and built webhook handlers for async event processing, including payment state changes and media upload callbacks, reliably extending core product features. Built Next.js App Router frontend components with React, applying server-component rendering for performance-critical routes; implemented Redis caching on high-read endpoints, reducing database load and improving latency on key API routes. Participated in sprint-based code reviews and architecture discussions, improving Jest test coverage on critical modules and contributing Swagger and OpenAPI documentation for internal and external developer integration.

Delivered complete full-stack applications for international clients across 3 or more countries, covering back-end API design, Next.js and React frontend, database schema, Stripe payment integration, VPS deployment, and documented handoff. Managed full client relationships independently, translating non-technical requirements into technical specifications and integrating Stripe, SendGrid, and third-party APIs based on individual client product requirements.