Hello, I'm
Sunil Kumar Mishra
Full Stack & Distributed Systems Engineer
Full Stack Developer with 3+ years of production experience architecting scalable REST & GraphQL APIs, real-time gaming engines with Socket.io, asynchronous pipelines with Kafka, and high-concurrency systems scaling to 1M+ concurrent users.
const developer = {
name: "Sunil Kumar Mishra",
title: "Full Stack & Systems Engineer",
location: "Bangalore, India",
scale: "1,000,000+ Concurrent Users",
focusAreas: [
"Distributed Systems",
"Real-time WebSockets & Kafka",
"High-Throughput APIs (NestJS/Node)",
"Local RAG & Vector Search (Qdrant)",
],
latencyReduction: "~40% during peak matchplay",
status: "Ready for Impact",
};
// Kafka event stream connected: 0 lag
> developer.deployProductionWorkload();
Featured Projects
Curated production systems emphasizing high concurrency, distributed event streaming, and privacy-first machine intelligence.
Real-Time Fantasy Football Platform
High-throughput real-time gaming engine scaling to 1M+ concurrent users
Engineered a distributed real-time platform supporting 1M+ concurrent users with live player trading, in-game chat, snake/ladder draft modes, and instant score updates.
- ▹Scaled distributed real-time infrastructure to 1M+ concurrent users during peak match windows
- ▹Decoupled heavy computation via Apache Kafka event streams, reducing live data latency by ~40%
Scalable Event Management System
Enterprise ticketing, session booking & automated AWS S3 media pipeline
Developed a robust event creation, attendee registration, and transactional ticketing platform powered by NestJS clean architecture, Redis distributed locks, and automated media delivery.
- ▹Zero double-booking occurrences across 50,000+ seat bookings using Redis Redlock distributed locks
- ▹Automated high-res event flyer and asset migration pipeline to AWS S3 with CloudFront edge caching
Full-Stack Enterprise Job Portal
Multi-tenant recruitment platform with GraphQL federation & Elasticsearch indexing
Built a full-featured recruitment platform featuring role-based access control (Admin, Candidate, Company), dual-visibility GraphQL schemas, Elasticsearch fuzzy search across 10,000+ jobs, and Stripe monetization.
- ▹Delivered sub-100ms multi-facet search across 10,000+ job listings using fine-tuned Elasticsearch indices
- ▹Engineered dual-schema GraphQL endpoints serving tailored field-sets to anonymous vs authenticated candidates
Local RAG Chatbot & Semantic Search
Zero API cost, fully private on-device Retrieval-Augmented Generation
Engineered a production-ready, fully private Retrieval-Augmented Generation API utilizing local vector embeddings and LLM inference. Eliminates external LLM API costs while safeguarding enterprise intellectual property.
- ▹100% private on-device inference with zero external API fees using Qdrant vector database and Ollama
- ▹Developed custom semantic text chunker with configurable token overlap to preserve cross-boundary context
Tech Stack & Specialization
Battle-tested technologies utilized in high-throughput production environments, handling distributed event streams, high concurrency, and real-time state.
Backend & Distributed Systems
Frontend & UI
Databases & In-Memory Storage
Cloud, DevOps & AI
Professional Experience
Proven track record of architecting and shipping mission-critical systems across gaming, enterprise event platforms, and HRMS applications.
Node.js Developer (Full Stack)
- ▹Built real-time fantasy football platform supporting 1M+ concurrent users using Node.js, React.js, and Socket.io; implemented live trading, in-game chat, and draft modes.
- ▹Leveraged Apache Kafka for asynchronous event processing and horizontal scalability, reducing live data latency by ~40% during peak gameplay.
- ▹Developed scalable event management system using NestJS and React.js; implemented media migration pipeline to AWS S3, Redis-based caching, and transactional PostgreSQL booking.
- ▹Engineered full-stack job portal with role-based access control, dual-tier GraphQL APIs, and Elasticsearch full-text filtering across 10,000+ job listings.
Full Stack Developer
- ▹Developed modular HRMS platform using React.js, Zustand, and React Hook Form/Formik, supporting employee management, drag-and-drop attendance, and payroll for 50+ staff.
- ▹Engineered full-featured Blog CMS with admin review workflows; utilized GraphQL, Redis caching, and Elasticsearch, boosting content publishing speed by 60%.
- ▹Built canteen management system integrated with IoT-based card payment devices, role-based access control (RBAC), and Socket.io live chat for order updates.
Breakdown Engineer
- ▹Conducted root cause failure analyses and diagnostics for complex industrial machinery and electrical systems, ensuring maximum system reliability.
- ▹Systematized operational maintenance procedures, reducing downtime and streamlining mechanical/electrical recovery workflows.
Resume Preview
Verified summary of technical expertise, production scale impact, and credentials.
Sunil Kumar Mishra
Full Stack & Distributed Systems Engineer
Profile Summary
Full Stack Developer with 3+ years of production experience building high-throughput real-time systems, distributed event architectures, and scalable web applications supporting 1M+ concurrent users.
Core Technical Skills
Experience
- •Built real-time fantasy football platform supporting 1M+ concurrent users using Node.js, React.js, and Socket.io; implemented live trading, in-game chat, and draft modes.
- •Leveraged Apache Kafka for asynchronous event processing and horizontal scalability, reducing live data latency by ~40% during peak gameplay.
- •Developed scalable event management system using NestJS and React.js; implemented media migration pipeline to AWS S3, Redis-based caching, and transactional PostgreSQL booking.
- •Engineered full-stack job portal with role-based access control, dual-tier GraphQL APIs, and Elasticsearch full-text filtering across 10,000+ job listings.
- •Developed modular HRMS platform using React.js, Zustand, and React Hook Form/Formik, supporting employee management, drag-and-drop attendance, and payroll for 50+ staff.
- •Engineered full-featured Blog CMS with admin review workflows; utilized GraphQL, Redis caching, and Elasticsearch, boosting content publishing speed by 60%.
- •Built canteen management system integrated with IoT-based card payment devices, role-based access control (RBAC), and Socket.io live chat for order updates.
- •Conducted root cause failure analyses and diagnostics for complex industrial machinery and electrical systems, ensuring maximum system reliability.
- •Systematized operational maintenance procedures, reducing downtime and streamlining mechanical/electrical recovery workflows.
Education
Get In Touch
Whether you are discussing high-throughput distributed systems, full-stack engineering roles, or consulting, I'd love to connect.