h
harshb1924

Harsh

@harshb1924
India
English, Hindi
About me
I build fast, scalable web applications with a strong focus on backend systems. If you're a startup or founder looking to build an MVP, improve performance, or add real-time features — I can help you deliver quickly and reliably. What I can help you with: • Fullstack web app development (frontend + backend) • Scalable Node.js backend APIs • Real-time features using WebSockets (live dashboards, chat, trading systems) • Database design & optimization (MongoDB, Redis) Let’s discuss your project — I’m happy to suggest the best approach before we start.... Read more

Skills

h
harshb1924
Harsh
Offline • 

See my services

Full Stack Web Applications
I will build fullstack web app using nodejs and react
From$30 / projectMore details

Work experience

Idea_Ignitions

Senior Software Engineer

Idea Ignitions • Full-time

Apr 2025 - Present • 1 yr 1 mo

Scaled event-driven backend systems (Node.js, Redis, WebSockets) to 1k+ concurrent users while leading a monolith-to-microservices migration. Re-architected Redis pub/sub adapter with connection pooling and backpressure control, reducing P95 latency from ~15s to under 1s under high concurrency. Built async job pipelines via BullMQ + Redis with rate limiting, delayed jobs, and fault-tolerant retries; WebSocket layer sustaining 100 real-time price updates/sec with zero dropped events. Delivered a FIFO order-matching engine with live P&L streaming (WebSockets + Redis Streams) for 1k+ concurrent traders at sub-100ms MongoDB read latency. Refactored a real-time poker platform (blockchain transactions) from legacy monolith to modular architecture in 1 week, eliminating critical race conditions.

MicroAcquire

Software Engineer

MicroAcquire • Full-time

Mar 2023 - Apr 2025 • 2 yrs 1 mo

Reduced response times by ~40% across key endpoints via query tuning, indexing optimisation, and algorithmic improvements. Built a one-click deployment automation platform provisioning subdomains via SSH, cutting deployment time from hours to under 5 minutes. Delivered REST APIs with TDD and robust error handling across PostgreSQL, MySQL, and MongoDB.