Kaunain Ahmad

Senior Java Full Stack Engineer

About Me

Senior Java Full Stack Engineer with 15+ years of experience architecting enterprise solutions in Java, Spring Boot, Microservices, and modern web frameworks. Proven expertise in Healthcare Insurance, claims processing workflows, batch automation, high-availability production support, and AI-assisted development.

Contact Information

Location: New Delhi, India
Contact Me
LinkedIn
GitHub

Skills & Expertise

Core Expertise

Java, Spring Boot, REST API Design, Microservices, PostgreSQL, Healthcare Insurance, Claims Processing, Production Support, Performance Optimization

Tools & Platforms

Kafka, Redis, Docker, AWS, GCP, GitHub Copilot, ChatGPT, Gemini, VS Code, AI-assisted Development

Additional Strengths

Nginx, Test Automation, Enterprise Integration Patterns, System Design, Angular, React

Professional Experience

Infosys

Senior Consultant

Sep 2022–Current • Noida / Remote

Driving enterprise healthcare insurance software delivery on Vitech Velocity platform with focus on REST APIs, claims adjudication, and production engineering.

Claims and Rules Engine: Architected claims adjudication workflows and validation rules on Vitech Velocity.
Microservices and APIs: Built high-throughput Spring Boot REST APIs and batch jobs for US healthcare clients.
Production Engineering: Led root-cause analysis for high-priority production incidents, ensuring SLA compliance.
Performance Tuning: Optimized PostgreSQL/Oracle queries and batch pipelines to eliminate transaction bottlenecks.
AI-Assisted Engineering: Accelerated test coverage, code refactoring, and documentation using AI developer tools.

Jagran New Media

Senior Software Developer

Nov 2012–Sep 2022 • New Delhi, India

Architected scalable backend services and cloud migration for high-traffic digital publishing portals.

Backend and APIs: Developed scalable Java/Spring microservices and REST APIs for high-traffic media portals.
Cloud and Modernization: Migrated publishing platforms to AWS/GCP with Redis caching and containerized deployments.
Integrations and Tuning: Integrated payment gateways and search engines while optimizing query performance.

DeCore Science and Technology Ltd

Java Developer

Feb 2012–Oct 2012 • Noida, India

Developed database-backed Java web modules and supported deployment cycles.

Developed core database-backed Java web modules for DEMS Enterprise ERP system.
Supported deployment cycles and database query optimization.

CnT Technologies

Software Engineer

Mar 2011–Feb 2012 • Gurgaon, India

Built telecom billing interfaces, eTopup modules, and SMS gateway integrations.

Engineered high-throughput telecom VAS platforms (VSENGINE & Blyk for Aircel).
Built real-time subscriber billing, eTopup modules, and SMS gateway integrations.

Projects

Velocity Benefits & Claims Platform

Vitech / Majesco

Tech Stack: Java, Spring Boot, PostgreSQL, REST APIs, Microservices, Batch Processing, Drools/Rules Engine

Key Contributions:

Architected backend services and auto-adjudication workflows for Dental, Health, and HCSA claims processing.
Developed REST APIs for Member Balance, Claim Submission, Group, and Plan management.
Built scheduled batch jobs for payments, financial disbursement, and automated Explanation of Benefits (EOB) document generation.
Resolved high-impact production incidents including JVM OutOfMemoryError issues and SQL query bottlenecks.

Fin-Track Wealth Management Platform

Personal / Open Source

Link: fincz-track

Tech Stack: Java, Spring Boot, Microservices, PostgreSQL, Docker, React, Node.js, REST APIs

Key Contributions:

Designed cloud-native Microservices architecture for wealth management across Stocks, Mutual Funds, ETFs, and NPS.
Built high-performance backend services: Auth (JWT), Portfolio Analytics, Market Data, Notifications, and Reporting.
Implemented modular API Gateway, Dockerized microservices, and end-to-end CI/CD test automation.

Education Platform

Jagran New Media

Link: Visit

Tech Stack: Java, Spring Boot, Microservices, PostgreSQL, Next.js, Redis, HAProxy

Overview: High-traffic education portal serving millions of students. Engineered scalable backend APIs for exam notifications, study modules, job alerts, and real-time content delivery.

Top Colleges

Jagran New Media

Link: Visit

Tech Stack: Java, Spring Boot, Microservices, MySQL, Next.js, REST APIs

Overview: College search and direct admission platform. Built backend services for institute discovery, fees comparison, cutoff rankings, and student lead management.

Live Results

Jagran New Media

Link: Visit

Tech Stack: Java, Spring Boot, MySQL, HAProxy, REST APIs

Overview: High-concurrency nationwide examination results platform. Engineered caching and low-latency database queries to seamlessly handle peak traffic during national, state boards results.

DEMS (Enterprise ERP System)

DeCore Science and Technology Ltd

Tech Stack: Java, Struts2, Spring, Hibernate, MySQL, jQuery

Overview: Web-based Enterprise Resource Planning (ERP) platform unifying supply chain, accounting, sales operations, and CRM with automated reporting and role-based workflows.

Blyk (Mobile VAS Platform)

CnT Technologies / Aircel

Tech Stack: Java, Servlets, Spring, MySQL, Castor, DBCP

Overview: Interactive mobile VAS and youth messaging platform on Aircel network connecting telecom subscribers with curated partner content and brand engagement campaigns.

Project Register

Aircel

Tech Stack: Java, Struts2, Spring, Hibernate, MySQL, jQuery

Overview: Centralized project governance portal for tracking and prioritizing enterprise projects across business units, featuring role-based access control and complete audit logging.

VSENGINE (VAS Management Engine)

Aircel

Tech Stack: Java, Struts2, Spring, Hibernate, MySQL, Web Services, Quartz Scheduler

Overview: Core VAS lifecycle automation engine managing subscriber subscriptions, renewals, billing grace periods, automated notification triggers, and third-party content integration.

Achievements

MCA (Master of Computer Applications)

IGNOU, New Delhi, 2010

Master of Computer Applications with focus on Advanced Software Engineering, Distributed Systems, and Data Structures.

PGDCA

IGNOU, 2008

Post Graduate Diploma in Computer Applications covering Database Management, Object-Oriented Programming, and Systems Analysis.

B.Sc. IT

AAI-Deemed University, 2006

Bachelor of Science in Information Technology covering Core Java, Networking, C/C++, and Database Systems.

Key Projects and Highlights

Fin-Track (Open Source): Production-grade wealth management platform built with Java, Spring Boot, React, and PostgreSQL.
Portfolio & Case Studies: Detailed enterprise project architectures and case studies available on this site under Projects.

Get in Touch

Have a project inquiry, job opportunity, or technical discussion? Send a message directly.