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Senior Java Engineer with 5+ years in Backend Development and Microservices
Java Backend Developer with 5+ years of experience in designing, developing, and deploying scalable microservices and RESTful APIs using Spring Boot. Expertise in building high-performance, distributed systems for fintech (payment gateway), telecom, and government domains. Strong experience in third-party API integration (banks, external vendors) with retry, fallback, and failover mechanisms ensuring high availability. Skilled in secure API development using Spring Security, JWT, and OAuth2 with role-based access control. Hands-on experience in high-volume transaction processing, transaction lifecycle management, and real-time data handling. Proficient in database design and performance tuning using PostgreSQL and MySQL with optimized queries and indexing. Experienced in event-driven architecture using Kafka, asynchronous processing, and inter-service communication. Strong exposure to CI/CD pipelines using Jenkins, containerization using Docker, and cloud deployments on AWS. Proven ability in performance optimization, production support, debugging, and root cause analysis (RCA) in live systems.
TalentCafe Solution
Senior Consultant
February 1, 2026 – Present
India
Ornate TechnoServices
Java Developer
November 1, 2024 – November 1, 2025
India
Eupheus Learning Pvt Ltd
Java Developer
March 1, 2022 – October 1, 2024
India
AWC Software
Java Developer
April 1, 2021 – March 1, 2022
India
CGHS (Central Government Health Scheme)
June 9, 2026 – Present
Developed backend system and Reactjs for managing beneficiary records, medical claims, and hospital workflows. Designed REST APIs for appointment booking, diagnostics tracking, and medicine distribution. Improved system performance by 35% through query optimization, indexing, and efficient data retrieval strategies. Implemented RBAC-based authentication and authorization for different roles (admin, doctor, beneficiary). Built hospital empanelment and doctor availability modules with scheduling logic. Developed claim validation and approval workflows for medical reimbursements with multi-level checks. Designed scalableand use Reactjs, database schema for handling large volumes of healthcare records. Integrated secure login and session management using JWT and Spring Security. Built reporting dashboards for claims status, usage analytics, and operational insights. Provided production support, bug fixing, and root cause analysis for critical issues.
Airtel Postpaid System
June 9, 2026 – Present
Developed microservices for telecom billing, subscriber management, and plan configuration. Designed APIs for customer onboarding, account lifecycle management, and service activation. Integrated telecom systems for real-time usage tracking and billing computation. Implemented billing calculation engine based on usage data, plan limits, and add-on services. Optimized performance for real-time data processing and billing generation under heavy load. Developed workflows for plan upgrade/downgrade and billing adjustments. Ensured system scalability to support large telecom user base and concurrent API requests. Implemented validation, authentication, and secure communication for telecom services. Handled high-volume distributed transactions ensuring consistency and reliability.
College Management System
June 9, 2026 – Present
Developed REST APIs for student, faculty, and admin modules with role-based access control. Implemented exam management system including result processing, grading, and report generation. Built attendance tracking system with real-time updates and reporting features. Developed fee management system including online payment integration and receipt generation. Designed course registration and timetable management modules. Implemented secure authentication using JWT and session management. Optimized database queries to improve performance for large datasets. Developed reporting dashboards for academic performance and attendance analysis. Supported notification system for real-time updates to users.
Pay10 Payment Gateway System
June 9, 2026 – Present
Developed scalable microservices for end-to-end payment processing, handling transaction lifecycle from initiation to settlement. Designed and implemented REST APIs for payment requests, transaction status tracking, and reconciliation workflows. Integrated multiple bank and third-party payment APIs with retry, timeout, fallback, and failover mechanisms to ensure high availability. Implemented fraud detection logic using request validation, duplicate transaction checks, and risk-based filtering. Handled high-volume concurrent transactions with optimized database queries, indexing, and connection pooling. Developed webhook listener systems for real-time payment status updates and asynchronous event processing. Implemented secure payment flow using encryption, tokenization, and secure headers to protect sensitive user data. Designed transaction state machine (INITIATED, PENDING, SUCCESS, FAILED) ensuring consistency and fault tolerance. Built reconciliation engine to match internal transaction records with bank responses and identify mismatches. Implemented centralized logging, monitoring, and alerting for tracking failures and debugging production issues. Used asynchronous processing (Kafka/events/queues) to decouple services and improve scalability. Ensured high availability and fault tolerance using distributed system design principles.
General Energy Management System
June 9, 2026 – Present
Developed IoT-based backend APIs and Reactjs for real-time energy monitoring and analytics. Designed data ingestion pipelines to collect and process data from multiple IoT devices. Built alerting system to detect abnormal energy consumption and trigger notifications. Developed reporting modules for daily, weekly, and monthly energy usage analysis. Optimized data processing using efficient API design and database tuning. Designed backend services and Reactjs for tracking equipment performance and energy efficiency. Built dashboards for visualization of energy metrics and trends. Enabled data-driven decision making through analytics and reporting features.
Cultural Fit Analysis
The candidate's project diversity across fintech, government healthcare, telecom, and IoT sectors indicates adaptability and a broad interest in different problem domains. Their experience with various technologies (Spring Boot, Spring MVC, Hibernate, JPA, Kafka, Docker, Jenkins, multiple databases) and architectural styles (Microservices, Distributed Systems, Event-Driven Architecture) suggests a willingness to learn and apply new tools. The focus on high availability, scalability, and secure systems aligns with best practices in modern software engineering, contributing to a positive cultural fit for a senior role that values robust and well-engineered solutions.
Soft Skills & Operational Fit
The candidate's resume demonstrates strong operational fit through consistent involvement in production support, debugging, performance optimization, and root cause analysis across multiple roles. Their experience in designing fault-tolerant and highly available systems, coupled with CI/CD pipeline work, indicates a proactive and reliable approach to software development and operations. The descriptions suggest a collaborative mindset, working with cross-functional teams to deliver solutions.