Senior Java Developer Jobs in Harrison, NJ (NOW HIRING)

• Job Title: Senior Java Developer / Application SME

• Client: Plymouth Rock Assurance

• Location: Woodbridge, NJ

• Work Model: Onsite

• Interview Process: In-Person (Face-to-Face) Interview Required

• Experience Required: 12+ Years

• Visa: No OPT/CPT

Plymouth Rock Assurance is seeking a highly experienced Senior Java Developer / Application SME to lead and take ownership of a portfolio of enterprise applications. This is a hands-on technical leadership role that combines full-stack Java development with application ownership, stakeholder management, and strategic problem-solving.

The ideal candidate will serve as the Subject Matter Expert (SME) for critical business applications, providing technical leadership while driving application stability, modernization, and continuous improvement. In addition to strong Java development expertise, the successful candidate must possess excellent communication skills, leadership capabilities, and a proactive approach to identifying and resolving complex technical and business challenges.

• Own and manage a portfolio of enterprise applications as the designated Application SME.

• Lead the design, development, enhancement, and support of mission-critical Java applications.

• Collaborate with business users, product owners, architects, and cross-functional teams to deliver scalable, high-quality solutions.

• Provide technical leadership, mentoring, and guidance to development teams.

• Track application health, production issues, risks, dependencies, and project deliverables.

• Drive root cause analysis, troubleshoot complex production issues, and implement long-term solutions.

• Communicate project status, risks, and technical updates effectively to leadership and business stakeholders.

• Build scalable RESTful APIs and microservices using modern Java technologies.

• Develop and enhance responsive front-end applications using Angular.

• Optimize application performance across Java, JVM, SQL, and database layers.

• Leverage AI-assisted development tools to improve development productivity, code quality, testing, and documentation.

• Promote engineering best practices, coding standards, and continuous improvement initiatives.

• 10+ years of hands-on Java/J2EE enterprise application development

• Core Java (Multi-threading, Concurrency, Executor Framework, Collections, Performance Optimization)

• Spring Boot

• Spring MVC

• Spring Security

• Hibernate

• MyBatis

• RESTful APIs

• Microservices Architecture

• JBoss / Apache Tomcat

• Strong SQL expertise

  • Complex Queries

  • Stored Procedures

  • Database Design

  • Query Optimization

  • Performance Tuning

• XML / XSLT

• JSON

• Angular 14+

• TypeScript

• JavaScript (ES6+)

• HTML5

• CSS3

• AJAX

• RxJS

• Reactive Forms

• Angular Routing

• Spring Boot REST API Integration

• JSP

• JSTL

• Experience serving as a Technical Lead, Application SME, or Application Lead.

• Proven experience owning and supporting enterprise business-critical applications.

• Ability to manage multiple applications simultaneously while balancing competing priorities.

• Strong analytical thinking and problem-solving capabilities.

• Experience tracking production issues, action items, technical dependencies, and application roadmaps.

• Excellent communication skills with both technical teams and executive business stakeholders.

• Ability to proactively identify risks, recommend solutions, and drive issues to resolution.

Candidates must have practical experience using AI-powered development tools to improve software engineering productivity.

Required experience includes:

• GitHub Copilot (Agent Mode)

• AI-assisted coding

• Debugging

• Test generation

• Documentation

• Code reviews

Preferred:

• Large Language Models (LLMs)

• Prompt Engineering

• Retrieval-Augmented Generation (RAG)

• AI APIs and AI-enabled application development

• Property & Casualty (P&C) Insurance domain experience

• Experience supporting large enterprise application portfolios

• JVM performance tuning

• Database performance optimization

• AWS Cloud experience

• AWS Certifications

We are looking for a technical leader who:

• Takes complete ownership of enterprise applications.

• Thrives in a fast-paced enterprise environment.

• Demonstrates strong leadership and accountability.

• Communicates effectively with business and technical teams.

• Solves complex problems proactively.

• Drives technical excellence and continuous improvement.

• Brings hands-on expertise across Java, Angular, SQL, and AI-assisted software development.

If you're an experienced Java Technical Lead or Application SME who enjoys solving complex enterprise challenges while leading critical applications from end to end, we'd love to hear from you!