Project: Plans, Add-Ons and Payments Portal. Responsibilities: Improved p95 latency on plan/add-on/payment REST APIs by removing duplicate calls in Node.js and Java/Spring Boot microservices, cutting 200–300 ms across 10-20M API requests/month. Hardened AWS (Lambda/EC2) payment services with better validation and error handling, lowering noisy 4xx/5xx by about 33%. Modernized plan and add-on flows using React.js with JavaScript/TypeScript, lifting internal UX review scores from 7.1 to 8.3, and delivered production-quality changes through Agile code reviews and testing across UI and services. Streamlined checkout workflows and API integration, improving checkout success from 92% to 97% during promotions. Added CloudWatch monitoring for critical APIs, cutting triage time from 45 minutes to 25 minutes and improving alert signal quality.

Full-Stack Developer at C2N IT Services

November 1, 2018 - June 1, 2023

Key Projects: Digital Payments & Account Portal: Contributed to a digital banking portal for balances, transactions, bill pay, and UPI/NEFT/IMPS transfers, and payee management across UI and backend services. Retail E-Commerce Web & Checkout: Team project building an e-commerce site with product listings, product pages, cart and checkout for smooth ordering on desktop and mobile. Responsibilities: Designed Java/Spring Boot transfer processing for UPI/NEFT/IMPS with clear status tracking and retry-safe handling, reducing duplicate postings from 1.6% to 0.3%. Developed a Python risk-scoring service for flagged transfers using rule-based checks and transaction signals, reducing the fraud-review queue from 700 to 450 cases per day and lowering false positives from 22% to 16%. Implemented React lazy loading for key modules, cutting bundle size 35% and improving first-load time from 3.0s to 2.0s. Enhanced payee management and transfer limits in Node.js APIs, reducing invalid transfers from 1