Software Engineer - Java Spring Microservices

VAIBHAV SINGH

Software Engineer ****************@*****.*** +91-705*******

PROFESSIONAL SUMMARY

Software Engineer with 2.5+ years of experience building scalable microservices using Java and Spring Boot. Improved API performance by 45% and reduced manual testing effort by 60% through automation. Experienced in distributed systems, cloud-native architecture, and CI/CD pipelines, working in Agile, cross-functional teams.

SKILLS

Backend: Java (8 & 17), C++, Spring Boot, Spring Core, Spring MVC, Spring Security, Hibernate, Spring Data JPA, RESTful Web Services, Microservices, JDBC, Distributed Systems, Logging

Frontend: HTML5, CSS3, TypeScript, Bootstrap 4, JavaScript, Angular,React, JSP, Servlets

Database & Server: MySQL, PostgreSQL, H2, Tomcat

Tools & Testing: Swagger, Postman, Selenium, Git, Bitbucket, Maven, Jenkins, CI/CD, JUnit, Mockito, SonarQube, Docker, AWS (EC2, Lambda), JIRA

EXPERIENCE

System Engineer Sep 2022 –May 2025

Infosys Ltd, Bangalore

•Engineered scalable enterprise banking applications handling millions of transactions using Java, Spring Boot, and microservices architecture.

•Modernized legacy banking applications by migrating monolithic services to microservices architecture, improving system scalability and reducing deployment complexity.

•Designed and optimized RESTful APIs using Spring Boot, improving system response time by 45% and enabling integration with 5+ third-party services.

•Tuned 20+ complex SQL queries in MySQL and PostgreSQL, improving data retrieval speed and reporting efficiency for high-volume banking operations.

•Implemented secure authentication and authorization for banking APIs using Spring Security, integrating ADFS-based SSO with OAuth2 and JWT token-based flows for identity and access management.

•Built and executed Selenium-based automation test suites in Java, reducing manual testing effort by 60–70% and shortening regression cycles.

•Implemented secure authentication and authorization using Spring Security.

•Integrated ADFS-based SSO with OAuth2 and JWT for identity and access management.

•Containerized microservices using Docker and automated deployments with Jenkins CI/CD pipelines, improving release speed and reliability.

•Performed API and integration testing using Postman and Swagger, ensuring system reliability and data accuracy.

•Documented technical processes, migration steps, and runbooks; identified and resolved critical production bugs.

•Collaborated with cross-functional teams in Agile sprints and consistently delivered features on time, taking ownership of assigned modules.

INTERNSHIP

System Engineer Apr 2022 – Sep 2022

Infosys Ltd, Bangalore

•Built a full-stack Hotel Reservation System using microservices architecture, enabling booking and payment workflows through REST APIs.

•Implemented 8+ REST API endpoints tested via Postman; collaborated with team members for cohesive development and feature delivery within sprint timelines.

PROJECTS

•LSAT Application Modernization – JPMC (Java 17, Spring Boot, PostgreSQL, Swagger, ADFS)

Re-architected a legacy banking application to a modern Java 17 and Spring Boot stack with PostgreSQL; designed and developed RESTful APIs from scratch, replacing outdated service layer and improving system maintainability and performance for a major US banking client.

•MBQR Application Enhancement – JPMC (Java 17, Spring Boot, PostgreSQL, Swagger, ADFS)

Enhanced and optimized backend REST APIs for the MBQR banking application, improving API response time and enabling new client integrations.

•Unified Automation Framework – JPMC (Java, Selenium, MySQL, Postman, HTML, CSS, JavaScript, JIRA)

Developed a reusable end-to-end automation framework, reducing manual regression effort by 60–70% across multiple test suites.

•Polycom API Automation – Cox (Java, Spring Boot, Postman, MySQL, JIRA)

Performed end-to-end API testing for REST APIs enabling phone device configuration and calling features for Cox; validated request/response flows, edge cases, and error handling using Postman, ensuring reliable telecom service integration.

•Cisco API Automation – Cisco (Python, Postman, MySQL, JIRA)

Performed comprehensive API testing for Cisco services and automated repetitive test scenarios using Python, improving test coverage and consistency.

EDUCATION

B.Tech in CSE Sep 2015 – Jul 2019

Galgotias University CGPA: 6.8

CERTIFICATIONS

•Basics of AWS for Backend Developers – Udemy

•C++ and Advanced DSA – Code Help

•Programming using JAVA – Infosys Ltd

•REST API Development with Spring Boot – Infosys Ltd

•Complete MySQL Developer Certification – Udemy

•Generative AI Knowledge-Based Assessment – Udemy

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