Gaurav RanaSenior Full Stack Developer

Carbon measurement and management platform (B2B SaaS)

• Built an end-to-end RAG pipeline that auto-drafts answers for sustainability disclosure standards (IFRS S1, GRI), using Amazon Bedrock for LLM inference and MongoDB hybrid search (vector + full-text) to retrieve and rank document chunks.
• Developed AI-powered PDF parsing that turns uploaded business documents (e.g. utility bills) into structured platform activities and auto-triggers emission calculations, eliminating manual data entry.
• Re-architected the platform to V2 with self-serve flows, progress tracking, and faster emissions calculation and reporting, using AWS Lambda and AWS Batch conditionally.
• Cut emission calculation time from 6 hours to 40 minutes (~90% faster) with materialized views and parallel AWS Batch jobs.
• Migrated to a multi-tenant architecture, cutting infrastructure costs by 70% and reducing daily production incidents by 85% (from ~15/day to <3/day).
• Built a one-click data migration tool, run via GitHub Actions, that migrates database records and S3 files with automated backups, rollback and recovery.
• Created reusable AI-assisted development workflows that shortened the coding cycle and surfaced bugs earlier; adopted across the team.

Live game-streaming platform (similar to Twitch) for the Indian audience

• Built and shipped the web streaming platform mirroring the Android app, owning backend REST APIs and web frontend; grew the user base by 140%.
• Built a role-based CMS with dynamic content delivery, increasing event coverage by 40% across mobile and web.
• Drove performance work on existing workflows, delivered new features, and owned production support and incident resolution.

Cloud and serverless application development

• Developed serverless applications on AWS and provisioned infrastructure as code with CloudFormation.
• Built a new commercial multi-tenant IoT product and contributed to residential products using DynamoDB, IoT Core and Lambda.
• Developed a real-time WebSockets service in Go.

Full-stack web and API development across client projects

• Nykaa Network: implemented a custom SSR architecture with Redux state hydration, improving SEO ranking by 65% and cutting initial page load time by 50%.
• Healthcare project: built backend workflows with AWS Step Functions, Lambda, EventBridge, S3, Secrets Manager and CloudWatch; sped up APIs with caching and data pre-generation.
• Mercadolar: built REST APIs with Node.js and Express and React frontends for a currency exchange platform.
• Developed reusable UI components, REST APIs and database schemas, and integrated APIs into frontends.