> Markdown version of [/jobs/ext/3867961-senior-java-developer](https://www.wearedevelopers.com/jobs/ext/3867961-senior-java-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Java Developer - **Company:** Eliassen Group - **Location:** Boston, MA, United States - **Experience:** Expert - **Salary:** $135,200.0 - $149,760.0 - **Contract:** Permanent contract - **Skills:** HTML, Java (Programming Language), JavaScript (Programming Language), Ajax (Programming Language), Apache HTTP Server, Apache Tomcat, Server Applications, Component-Based Software Engineering, Unit Testing, Cascading Style Sheets (CSS), Hibernate (Java), Interoperability, Spring Framework, JSON, WildFly (JBoss AS), JQuery, Javaserver Pages, MyBatis, Performance Tuning, Web Application Security, SQL Stored Procedures, SQL Databases, System Integration Testing, Web Applications, Extensible Stylesheet Language Transformations (XSLT), Multithreading, GitHub Copilot, Spring-mvc, AngularJS, Information Technology, Restful APIs - **Published:** October 22, 2026 - **Apply:** https://www.thejobnetwork.com/job/36d5b66e-7678-4a7e-bf9f-538b671fabbd/senior-java-developer ## About the Role * 5+ years developing web-based applications using Java/J2EE technologies. * Core Java including multithreading and Executor framework. * Spring, Spring MVC, Hibernate, and MyBatis. * RESTful web services development and integration. * JavaScript, JSP, CSS, HTML, Angular, and modern JS libraries such as jQuery. * AJAX, XML/XSLT, and JSON. * Application servers including JBoss, Apache, and Tomcat. * SQL database design, stored procedures, and performance optimization. * Experience using GitHub Copilot in Agent mode to assist with Java development. * Ability to create cross-browser, cross-platform compatible solutions. * Strong understanding of web application security best practices. * Preferred: Experience with property and casualty insurance applications, and familiarity with performance tuning and scalability strategies. * Personal: Self-motivated, organized, and able to prioritize. Strong analytical and problem-solving skills with attention to detail. Education Requirements: * Bachelor's degree in Computer Science, Engineering, or related field. ## Description * Collaborate with Business Analysts to translate business requirements into technical designs. * Develop, test, and maintain high-quality source code across the full stack. * Create and execute unit tests and support functional and system integration testing. * Participate in deployment activities and production support when needed. * Design and integrate application components for seamless interoperability. * Ensure solutions meet performance, scalability, maintainability, and security standards.