Arun Kumar

Backend Engineer with 3+years of experience in buildings callable Java and Spring Boot applications for enterprise clients including Master card and Farmer Insurance. Strong expertise in micro services, API development, to Java modernization, PDF processing, unit testing, CI/CD, Oracle/DB2, and secure service integration. Proven ability to deliver high-quality, production-ready code for financial and insurance systems.

Software Engineer - Sirius Global Limited - Delhi, India

(2023-10)

Client: Gail India Noida (Oct 2025-Present)

• Migrated high-impact legacy COBOL modules to modern Java micro services, enhancing system maintainability and reducing mainframe processing overhead.
• Designed developed 8 Spring Boot micro services for Auto Commercial Insurance workflows, including document generation, validation, and policy processing.
• Achieved 80 Percent J Unit coverage across critical business modules using J Unit Mockito, significantly increasing reliability and reducing regression defects.
• Implemented secure REST APIs, exception handling, and validations used across down stream systems.
• Collaborated with cross-functional teams to deploy services via CI/CD pipelines using Jenkins and Git, ensuring zero-downtime rollouts.

Software Engineer - IDBI Bank - Delhi

(2022-09 - 2023-10)

• Built micro services and backend modules using Spring Boot for scalable financial data processing and reconciliation.
• Developed 20+ CRUD operations and 4+ REST APIs, improving automation across internal Master card workflows
• Implemented data migration workflows to de-normalize DB2 datasets into Oracle, improving downstream analytics performance.

Software Engineer - PNB Bank - Laxmi Nagar Delhi, India

(2021-07 - 2022-08)

• Modernized legacy systems by migrating from Java1.5 / WAS 6.1 / Top-link Spring Boot + React.
• Integrated OKTA SSO for secure authentication across enterprise applications
• Built client management modules using Java EE, and Spring MVC, improving operational efficiency.

B-Tech - Computer Science and Engineering - S R Institute Of Management & Technology (2016-08 - 2020-05)