Architecting 

Netflix-like distributed video streaming, catalog & access-control backend

• ▹Architected scalable backend microservices for an OTT platform handling content catalogs, channel management, video resolutions, comments, reactions, notifications, and administrative workflows.
• ▹Engineered zero-trust OAuth2 and RS256 JWT authentication with token expiry windows and role-based access control (RBAC) across channels and paid tiers.
• ▹Reduced security-related incidents by 30% through reinforced access-control policies.

Asynchronous parallel video transcoding pipeline with bounded concurrency

• ▹Implemented an asynchronous Go service that transcodes videos into multiple resolutions in parallel using FFmpeg and concurrent goroutines.
• ▹Used WaitGroup for synchronization and a 6-way semaphore to cap concurrency, achieving up to 4x reduction in processing time versus sequential transcodes.
• ▹Published results via RabbitMQ and stored outputs in MinIO for efficient retrieval.

High-throughput messaging system with WebSockets, queue buffering & caching

• ▹Built a chat backend supporting private and group chat, file upload/streaming, bookmarks, search and message forwarding.
• ▹Implemented Socket.IO real-time delivery with socket-to-queue messaging via RabbitMQ, Redis caching and JWT-based profile checks.

Decoupled event-driven integration guaranteeing at-least-once delivery

• ▹Engineered a decoupled event-driven integration between Meet and Calendar microservices.
• ▹Utilized RabbitMQ to publish events asynchronously ensuring at-least-once delivery and improved system scalability.

Retrieval-Augmented Generation (RAG) semantic search and document Q&A pipeline

• ▹Developed a Retrieval-Augmented Generation pipeline to ingest large PDFs and answer queries using OpenAI API, pgvector and LangChainGo.
• ▹Improved high-precision ingestion and retrieval to support internal PDF Q&A functionality.

AI-driven compliance engine for sensitive document & image filtering

• ▹Built a microservice to filter sensitive images and documents using OpenAI API and LangChainGo.
• ▹Implemented pgvector to assist image search and moderation against blacklisted content.

Zero-trust token-based identity and access management service

• ▹Developed a JWT-based authentication service implementing RSA private key signing with RS256 and HttpOnly cookie storage to enhance security.
• ▹Designed token generation and verification flows to secure client login and API interactions.

Scalable file storage, indexing, and sharing service inspired by Google Drive

• ▹Created a cloud-drive backend similar to Google Drive using Go, Iris, GORM and MinIO.
• ▹Increased file retrieval speed by 30% through optimized storage and management design.

Polyglot microservice proof-of-concept integrating Java Spring Boot & Go auth

• ▹Developed a proof-of-concept blog application with Spring Boot, Spring Data JPA and MySQL.
• ▹Integrated MinIO for object storage and collaborated with a Go-based JWT auth service.

Lightweight Model Context Protocol (MCP) server in Go for AI clients

• ▹Developing a lightweight MCP server in Go using mark3labs/mcp-go to expose the internal PDF Q&A/RAG tool as a callable MCP tool for AI clients.
• ▹Collaborating across teams to ensure integration, testing and reliability.

Machine learning classifier detecting network security threats on KDDCUP99

• ▹Implemented machine learning algorithms on the KDDCUP99 dataset to detect and predict various security attacks using feature-based models.
• ▹Led an academic team of 3 engineers, managing model training, feature selection, and project delivery.