MehulKumar H.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Are you building a high-stakes application where performance and security are non-negotiable? I am a Senior Solutions Architect and Certified Scrum Master with over 11 years of experience engineering scalable backends for global enterprises. Unlike generalist developers, I specialize in complex, regulated domains: Fintech, Algorithmic Trading, and Healthcare IT. I operate as a high-level consultant, helping startups and established firms migrate legacy monoliths to cloud-native microservices using the bleeding edge of the Java ecosystem (Java 25, Spring Boot 4, Spring Framework 7). My Domain Expertise: 🚀 Fintech & High-Frequency Trading: I architected Trademaster, a low-latency algo-trading engine that processes market data streams using Kafka and predictive algorithms. I also built Sonic Pay, a PCI-DSS compliant payment gateway aggregator handling secure transactions across Credit, UPI, and Wallets. 🏥 Healthcare & Interoperability: I led the development of Muheal, an inpatient/outpatient management system. I specialize in HL7 and FHIR integration, ensuring your app speaks perfectly with hospital labs and EMR systems while maintaining data privacy. 🧠 AI & AdTech Analytics: For Instalily, I integrated Google Vision API and BigQuery to build an AI-driven recommendation engine that analyzes ad performance (CTR, View Time) to maximize ROI. My Tech Stack: Languages: Java (v8 through v25), SQL. Frameworks: Spring Boot, Spring Security, Hibernate, JHipster, Angular. Architecture: Microservices, Event-Driven (Kafka), RESTful APIs, Docker, Kubernetes. Tools: IntelliJ IDEA, SonarQube, JIRA, BitBucket. Why Hire Me? I have been an independent consultant since 2014. I understand that code is a business asset. I deliver clean, testable, and documented architecture that scales with your company. Ready to build a system that lasts? Click "Invite to Job" and let's discuss your architecture.