Headline

Java Backend Engineer (4.9 Yrs) | Formerly at TCS | Spring Boot | REST & GraphQL APIs | API Migration | Production Support (RTB) | Argo CD | QuickBooks Online | API Modernization

About

Senior Java / Backend Engineer with 4.9 years of experience specializing in backend development, API modernization, and production-critical systems. Currently supporting Intuit – QuickBooks Online (QBO), where I handle RTB operations, resolve high-severity production issues, lead API migration initiatives, and drive safe traffic transitions at scale. I actively contribute to API adoption, testing automation using Karate, and CI/CD deployments via Argo CD across multiple environments. Core Strengths: Java, Spring Boot, Spring Security, JPA, Hibernate REST & GraphQL APIs | API Version Migration Production Support & Incident Management (RTB) Karate API & Integration Testing CI/CD, Argo CD, Docker MySQL Database Design & Optimization I’m passionate about building scalable, reliable backend systems, improving system performance, and solving complex production challenges. Open to backend-focused roles where technology meets impact.

Location

Greater Kolkata Area

AI stack

cursor

github copilot

langchain

openai

Work experience

Senior Solution Engineer at Deqode, Dec 2024 - Present · 1 yr 6 mos, Kolkata, West Bengal, India, • Experienced Senior Solution Engineer specializing in production support and operations for high-impact platforms, including Intuit’s QuickBooks Online (QBO) at Persistent Systems. • Expertise in resolving critical production issues, leading RTB (Run the Business) operations, and handling incident management with thorough root cause analysis (RCA). • Led API migration initiatives, including detailed field mapping, traffic transition, and backward compatibility validation to ensure zero disruption. • Designed and implemented comprehensive test cases to achieve full code, branch, and functional coverage. • Developed integration and end-to-end test suites to ensure system reliability and production readiness. • Supported and managed CI/CD deployments using Argo CD, enabling faster and safer releases across environments. • Contributed to code enhancements and functional changes aligned with evolving business requirements. • Strong collaborative team player, working closely with cross-functional teams to ensure production stability and business continuity. • Actively seeking opportunities to leverage expertise in modern service integrations, backend systems, and DevOps best practices.

Software Developer at MaxMobility Pvt. Ltd., Mar 2024 - Dec 2024 · 10 mos, Kolkata, West Bengal, India, Developed and maintained microservices-based applications using Java and Spring Boot, ensuring adherence to best practices and design patterns for clean and maintainable code. • Implemented database operations using MySQL, optimizing performance and reliability. • Created and maintained RESTful APIs to facilitate seamless communication between backend services and frontend applications. • Collaborated with frontend developers to ensure seamless integration of backend services with user interfaces. • Demonstrated expertise in writing clean, efficient, and maintainable code, contributing to overall team productivity and project success.

System Engineer at Tata Consultancy Services, Mar 2021 - Nov 2023 · 2 yrs 9 mos, Kolkata, West Bengal, India, • Streamlined server operations and promptly resolved business inquiries through daily operational support. • Showcased proficiency in analysing, implementing, testing, and deploying business requirements to meet organizational needs. • Delivered performance through conducting thorough code reviews and debugging sessions, resulting in enhanced functionality and efficiency. • Thrived in a collaborative, agile team setting, consistently delivering exceptional results and exceeding objectives within specified timelines.

Software Engineer Intern at Unyscape, Jan 2021 - Mar 2021 · 3 mos, Noida, Uttar Pradesh, India, • Successfully implemented the development of robust, user-friendly, and reliable Android applications. • Developed the design and implementation of applications to surpass high standards of performance and user satisfaction. • Simulated comprehensive unit testing to elevate code quality and optimize application performance. • Strategized and implemented effective bug resolution and performance enhancement techniques to enhance user satisfaction.

Education

Bachelor of Technology - BTech, Electrical, Electronics and Communications Engineering, Netaji Subhash Engineering College (NSEC)