Headline

Backend Developer │ Node.js · Express.js · MongoDB · Redis │ REST APIs · JWT · Elasticsearch

About

I'm a Node.js Backend Developer with 2+ years of experience building the server-side systems that fintech and crypto platforms run on. At JSON Technologies, I was part of the team behind FirstDex — a real-time crypto trading platform where bad API design isn't just a bug, it's a business risk. I took that seriously. Day to day, that meant designing REST APIs that handle high-volume traffic without breaking, locking down access with JWT and Role-Based Access Control, and integrating Elasticsearch so users could search through millions of transactions in milliseconds instead of seconds. When things got slow, I reached for Redis. When things broke in production, I was the one debugging at the source — not just closing tickets. What I work with: Node.js · Express.js · NestJS · MongoDB · PostgreSQL · Redis · Elasticsearch · JWT · AWS (S3, Lambda, EC2) · Web3.js I care about code that's maintainable — middleware architectures, centralized error handling, structured logging. The kind of codebase the next developer doesn't curse when they open it. Right now, I'm looking for a Node.js or Backend Developer role where I can work on systems that actually scale — ideally in fintech, SaaS, or anything with real backend complexity. If that sounds like a fit, reach me at rakeshmaddiboina@gmail.com or connect with me right here on LinkedIn.

Location

Hyderabad

AI stack

cursor

github copilot

ollama

openai

Work experience

Node.js Developer at Json Technologies, Feb 2024 - Mar 2026 · 2 yrs 2 mos, Hyderabad, Engineered 15+ REST APIs for FirstDex crypto platform using Node.js & Express.js, handling 10,000+ daily requests with sub-200ms response times Implemented JWT + RBAC authentication system across all API endpoints, reducing unauthorized access incidents to zero in production Integrated Elasticsearch with custom Query DSL mappings using filtering, pagination & aggregations, cutting search query response time by ~60% Optimized database performance across MongoDB & PostgreSQL using Redis caching, reducing average API latency by 40% under peak load Built centralized middleware architecture for request validation, error handling & structured logging, reducing debugging time by ~50% across the team Integrated Web3.js for blockchain interactions including wallet balance retrieval & transaction validation, enabling seamless DEX trading workflows Diagnosed and resolved 20+ production-level issues, improving system uptime and API reliability for a live crypto trading platform

Mern Stack developer at Innomatics Research Labs, Jul 2023 - Dec 2023 · 6 mos, Hyderabad, Built 5+ RESTful APIs using Node.js, Express.js & MongoDB, delivering functional backend modules within a 6-month training-to-production timeline Implemented JWT-based authentication from scratch, securing user login and session management across all API routes Tested and documented all API endpoints using Postman, ensuring 100% endpoint coverage before handoff.

Education

Bachelor's degree, Mechanical Engineering, Vasavi College of Engg