Headline

Java Full Stack Developer | Banking & Tax Compliance Systems | Spring Boot · Microservices · ZK · REST APIs | AWS · Oracle · Redis

About

I'm a Full Stack Java Developer with 1.5+ years of experience building secure, high-throughput banking and tax compliance applications — and I thrive in the complexity that comes with regulated, mission-critical systems. At Image InfoSystems, I work across two enterprise products: 🏦 Cheque Truncation System (CTS) — a core NPCI-integrated banking platform handling real-time interbank cheque processing across multiple banks. My work here covers backend module engineering with Java, Spring Boot, and Hibernate; NPCI file pipeline optimization; SOAP/REST API design for real-time interbank operations; and cloud deployments on AWS (ECS, Lambda, RDS) via Tomcat, JBoss, and WebLogic. 🧾 VAT Engine — an enterprise tax compliance platform serving banks, businesses, and government compliance bodies. I build multi-jurisdiction VAT/GST tax rule modules, configurable rate engines, and full-stack features using Java, Spring Boot, and ZK Framework — contributing to a 60%+ increase in transaction throughput through backend optimization. On the technical side, I work extensively with Java concurrency (ExecutorService, CompletableFuture, thread pools) to parallelize batch jobs, and I've led a Java 8 → Java 21 migration on a live banking codebase. I also introduced structured observability via SLF4J/Logback and Spring Boot Actuator. Beyond my core job, I build ambitious side projects. Queueless is a full-stack queue management platform I architected from scratch — Spring Boot 3.2, PostgreSQL, Redis, Bucket4j for distributed rate limiting, JWT auth with RBAC, Razorpay payments, WebSockets for real-time updates, and a React + React Native frontend. My stack: Java · Spring Boot · Hibernate · JPA · Spring Security · OAuth 2.0 · JWT · REST/SOAP APIs · Microservices · ZK Framework · Oracle · PostgreSQL · Redis · AWS · Docker · React · TypeScript If you're looking for a backend-first engineer who understands regulated environments, cares about clean architecture, and ships reliable software — let's connect. 📧 prabhakarkumarcs2023@gmail.com

Location

Bengaluru

AI stack

antigravity

claude code

claude

codex

gemini

github copilot

Work experience

Software Developer at Image InfoSystems, Oct 2024 - Present · 1 yr 11 mos, New Delhi, Delhi, India, Full-stack developer on two enterprise banking and tax compliance products in regulated, high-availability environments. ── CTS (Cheque Truncation System) ── - Engineered backend modules using Java, Spring Boot, Hibernate, and JDBC; implemented role-based verification workflows and improved OCR/MICR extraction accuracy for multi-bank cheque processing - Optimized NPCI file processing pipelines and complex SQL queries on Oracle and SQL Server; parallelized batch jobs using ExecutorService and thread pools to increase system throughput - Designed SOAP/REST APIs for real-time interbank cheque processing; applied transaction management and exception handling to ensure data consistency under high load - Led Java 8 → Java 21 migration; deployed applications on AWS (ECS, Lambda, RDS) via Tomcat, JBoss, WildFly, and WebLogic ── VAT Engine (Tax Compliance Platform) ── - Built multi-jurisdiction VAT/GST tax rule modules and configurable rate engines covering multi-country rule evaluation and exemption logic — serving banks, enterprises, and government compliance bodies - Optimized Oracle/SQL Server transaction pipelines — contributed to 60%+ increase in transaction throughput for high-volume tax workloads - Delivered full-stack features using Java, Spring Boot, and ZK Framework across backend services and frontend UI Stack: Java 21, Spring Boot, Hibernate, ZK Framework, SOAP/REST APIs, Oracle, SQL Server, AWS, Docker, Redis, JUnit, Maven, Git

Software Developer Engineer at salesine, Jul 2024 - Aug 2024 · 2 mos, Delhi, India, - Developed and integrated REST APIs using Java and Spring Boot for internal web application features - Built responsive frontend components with React and JavaScript; collaborated with senior engineers on end-to-end feature delivery across the full stack - Gained hands-on exposure to Git workflows, code reviews, and Agile sprint cycles in a professional team environment Technologies: Java, Spring Boot, React, JavaScript, Git, REST APIs

Machine Learning Intern at Compsoft Technologies, Aug 2022 - Sep 2022 · 2 mos, Bengaluru, Karnataka, India, - Collaborated on a research-driven ML project using Python; led design and implementation of a dynamic website to serve the prediction model - Improved model prediction accuracy by 20% through targeted algorithm optimization Technologies: Python, Machine Learning, Web Development

Education

Bachelor of Engineering - BE, Computer Software Engineering, Visvesvaraya Technological University

12th, science, TNB College Bhagalapur

Public links

github: https://github.com/prabhakarkumar07

leetcode: https://leetcode.com/prabhakarkumarcs