Gagan D D

Java Developer

Bengaluru, India 1+ yrs exp 84 · Excellent

About

Java Developer with nearly 2 years of experience in enterprise application development, primarily working with Core Java, SQL and production support in BFSI domain. Proven track record of developing high volume payment processing solutions, implementing strict business validations, resolving critical production issues and delivering application enhancements in Agile environments. Hands on project expertise with Spring Boot, REST APIs, JPA, Hibernate, Microservices and Docker.

Skills & Expertise (17)

Core Java Intermediate

6.5/10

Years Exp

Oracle SQL Intermediate

6.5/10

Years Exp

Java Intermediate

6.5/10

Years Exp

Scrum Intermediate

6.0/10

Years Exp

Agile Intermediate

6.0/10

Years Exp

Git Intermediate

6.0/10

Years Exp

REST APIs Intermediate

5.5/10

Years Exp

Spring Boot Intermediate

5.5/10

Years Exp

Spring Framework Intermediate

5.5/10

Years Exp

JavaScript Intermediate

5.5/10

Years Exp

Microservices Intermediate

5.0/10

Years Exp

Hibernate Intermediate

5.0/10

Years Exp

Spring Data JPA Intermediate

5.0/10

Years Exp

Jenkins Intermediate

5.0/10

Years Exp

Docker Intermediate

5.0/10

Years Exp

SOAP APIs Intermediate

4.5/10

Years Exp

SQL

Work Experience

Java Developer

Tata Consultancy Services

Dec 2024 - Present

Designed and developed an Excel/CSV based bulk payment processing solution for Charity and Outstanding Distribution Payments, addressing a high-volume workload of approximately 8,000 – 16,000 requests and reducing reliance on manual payment entry. Developed Java, JDBC, Oracle SQL, and batch processing components from scratch, enabling validated payment records to flow into the applications Interbank Transfers workflow. Implemented comprehensive business and data validations to prevent erroneous records from being processed, along with logging mechanisms to identify invalid records and support correction of faulty input data. Maintained Oracle SQL joins, views and stored procedures to support application data processing and validation. Streamlined database performance and data access speed by auditing legacy SQL scripts, strategically implementing indexes and restructuring query architecture to eliminate high latency wildcard selects and optimize throughput. Executed high-priority change requests and resolved production defects for an enterprise BFSI application, collaborating with senior developers and cross-functional teams in a fast-paced Agile environment. Contributed to performance optimization, testing, code-reviews and post deployment support, ensuring the reliable and seamless delivery of system enhancements. Leveraged JavaScript and JSP to implement front-end UI enhancements and fulfil critical functional requirements.