Open to opportunities

Vandana Polineni

@vandanapolineni

Message

I’m a Java Developer building secure Spring Boot microservices and web applications.

United Kingdom

Message

What I'm looking for

I’m looking for hybrid or remote Java roles in the UK where I can build secure Spring Boot microservices and REST APIs—owning delivery from development to testing and deployments within structured, team-based processes.

I’m a Java Developer with 4+ years of hands-on experience building back-end services and web applications, currently delivering internal Spring Boot microservices in a regulated banking environment. I focus on reliability and maintainability, improving fault tolerance through exception handling, retry mechanisms, and graceful degradation.

Security is central to how I build: I’ve implemented Spring Security with JWT and OAuth across multiple projects, including platforms where secure login and role-based access were core requirements. I’m comfortable owning the full delivery cycle—unit/integration testing with JUnit and Mockito, builds with Maven/Gradle, and collaboration through GitLab and disciplined code reviews.

Across enterprise consulting and freelance work, I’ve delivered REST APIs, microservices architecture, and practical integrations—Kafka-based real-time messaging, Twilio SMS alerts, and email notifications. With 3.9 years total professional experience and a proactive approach to working independently in remote setups, I’m open to hybrid or remote roles across the UK.

Experience

Work history, roles, and key accomplishments

Current

Java Developer

Current

Barclays

Dec 2025 - Present (6 months)

Develop and maintain internal Spring Boot microservices in a regulated banking environment, delivering features, bug fixes, and service stability improvements across environments. Led a Java 8 to Java 21 migration and improved fault tolerance with exception handling, retries, and graceful degradation; supported SIT/OAT releases with automated sanity/smoke testing.

Java 21+Spring Boot Spring MVC Maven Gradle Junit Mockito Gitlab Microservices REST APIs

Freelance Java Developer

RGroup Solutions

Dec 2024 - May 2025 (5 months)

Built and extended a platform’s authentication, chat, and ad management features for a client, incorporating new requirements and feedback. Owned the full SDLC remotely—requirements through delivery—testing APIs with Postman and writing JUnit/Mockito tests for regression coverage.

Java Spring Boot Spring Security JWT OAuth Kafka Twilio PostgreSQL Junit Mockito

Java Developer

Mahasos Info Private Ltd

Jul 2024 - Nov 2024 (4 months)

Developed a platform for RGroup Solutions covering secure login/authentication, real-time chat, notifications, and ad management. Implemented Spring Security with JWT and OAuth, added Twilio SMS and email notifications, built real-time messaging with Kafka, and delivered the ad management module from data layer to REST and front-end integration.

Java Spring Boot Spring Security JWT OAuth Kafka Twilio REST APIs PostgreSQL Junit

Software Engineer

Cognizant Technology Solutions

Jan 2021 - Jul 2023 (2 years 6 months)

Built and maintained Spring Boot web applications across multiple client engagements, working across controller, service, and repository layers using JPA/Hibernate. Delivered RESTful services with request validation and consistent error handling, improved input handling with bean validation, and supported releases with Postman testing and JUnit/Mockito-based test coverage.

Java Spring Boot Spring MVC Hibernate REST APIs SQL PostgreSQL Junit Mockito

Education

Degrees, certifications, and relevant coursework

NCET, Bangalore

Bachelor of Engineering, Computer Science Engineering

2016 - 2020

Grade: First Class with Distinction — 85%

Completed a Bachelor of Engineering in Computer Science Engineering (2016–2020) at NCET, Bangalore. Graduated First Class with Distinction, scoring 85%.