Parthu Dhawan

Junior Java Developer | Spring Boot & REST APIs Specialist

Talent

ChicagoMember since August 5, 2026

JavaSpring BootRESTful APIsMicroservicesJUnitIntegration TestingMocking FrameworksAutomated TestingDebugging Enterprise SystemsGitMavenDockerJenkinsCI/CD PipelinesAgile/ScrumPostgreSQLMySQLSQL Query TuningPerformance TuningPython

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JavaSpring BootRESTful APIsMicroservicesJUnit

About

Java Developer with ~2 years of professional software engineering experience and an M.S. in Computer Science. Specialized in backend enterprise application development using Java (8/11/17), Spring Boot, RESTful APIs, and Object-Oriented Principles. Proven track record in automated unit/integration testing (JUnit), relational database query optimization (MySQL/PostgreSQL), debugging enterprise systems, and CI/CD pipelines.

Experience

Full Stack Engineer (Java / Backend Lead) - ChildEra

(2025-03)

Java & Spring Boot Architecture: Designed and developed 5 robust REST API domains using Java and Spring Boot, establishing clear service boundaries and request payload validation.
Database Performance Tuning: Modeled 5 MySQL/PostgreSQL relational data domains and optimized enterprise application speed through transactions, indexing, and SQL query tuning.
Automated Testing & Quality: Wrote comprehensive automated unit and integration tests using JUnit and mocking frameworks to maintain high test coverage and reliable build pipelines.
Debugging & Maintenance: Traced and resolved complex application defects across Java APIs, SQL query layers, and web interfaces using log inspection and reproducible tests.
Version Control & Delivery: Managed full-lifecycle delivery using Git, Maven, Docker, and Jenkins CI/CD pipelines in an Agile/Scrum sprint workflow.

Systems Engineer - Infosys Limited

(2022-03 - 2022-12)

OOP & Modular Refactoring: Refactored redundant application logic into modular Java services using Object-Oriented Design principles, Java Collections, and robust exception handling.
REST API Testing & Validation: Executed automated and manual integration testing across REST APIs, validating HTTP methods, JSON structures, headers, and database persistence.
Defect Investigation & Database Inspection: Used SQL joins, aggregations, and subqueries to investigate backend application records and resolve production defects alongside QA teams.