Senior Java Developer

Quick Facts

• Role: Senior Java Developer

• Experience: 12+ years

• Contract: W2 Contract

• Location: Jersey City, NJ

Description

Senior Java Developer responsible for designing, developing, enhancing, and maintaining scalable, high-performance enterprise applications. Build and maintain microservices, implement RESTful APIs and web services, integrate with databases and third-party systems, and support quality through unit/integration testing while collaborating with QA and DevOps teams.

Responsibilities

• Design, develop, and maintain enterprise applications using Java, J2EE, Spring Boot, and related technologies

• Build scalable, loosely coupled microservices-based applications

• Design, implement, and integrate RESTful APIs and web services

• Participate in application architecture, technical design, and code reviews

• Develop backend components, business logic, database integrations, and reusable modules

• Work with relational and NoSQL databases; optimize queries and data access performance

• Integrate with third-party systems, internal platforms, and messaging services

• Identify and resolve performance issues, production defects, and technical challenges

• Implement unit testing and integration testing to ensure quality and reliability

• Collaborate with QA for functional, regression, and automation testing

• Work with DevOps on deployments, CI/CD pipelines, and release management

• Follow secure coding practices and enterprise development standards

• Participate in Agile/Scrum ceremonies and sprint planning

• Provide technical guidance and mentorship to junior developers

Requirements

• 12+ years of professional experience in Java/J2EE application development

• Strong hands-on experience with Java 8/11/17 or newer

• Extensive experience with Spring Framework, Spring Boot, Spring MVC, and Spring Security

• Strong experience designing and developing microservices architecture

• Expertise in REST APIs, SOAP web services, and API integrations

• Good understanding of Hibernate, JPA, and ORM frameworks

• Strong database experience with Oracle, PostgreSQL, MySQL, or similar relational databases

• Experience with SQL queries, stored procedures, database design, and performance tuning

• Experience with messaging technologies such as Apache Kafka, RabbitMQ, or JMS

• Hands-on experience with Git and Maven/Gradle

• Experience with CI/CD tools such as Jenkins, GitHub Actions, or Azure DevOps

• Working knowledge of Docker, Kubernetes, and cloud platforms such as AWS, Azure, or GCP

• Experience with unit testing frameworks such as JUnit and Mockito

• Strong understanding of OOP concepts, design patterns, data structures, and algorithms

Benefits

• W2 contract role

• Opportunity to work on large-scale enterprise applications in a cross-functional environment with architects, QA, and DevOps