> Markdown version of [/jobs/ext/3586855-senior-java-full-stack-lead-developer](https://www.wearedevelopers.com/jobs/ext/3586855-senior-java-full-stack-lead-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 Full Stack Lead Developer - **Company:** CYNET SYSTEMS INC. - **Location:** Jersey City, NJ, United States - **Experience:** Expert - **Salary:** $95,680.0 - $106,080.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Agile Methodology, Application Performance Management, Cloud Computing, Cloud Engineering, Software Documentation, Code Review, Software Debugging, DevOps, Junit, NoSQL, Mockito, Software Systems, RxJS, Enterprise Software Applications, GitHub Copilot, Spring-boot, Software Troubleshooting, Backend, Git, Event Driven Architecture, AngularJS, Apache Kafka, Front End Software Development, Restful APIs, Docker, Microservices - **Published:** October 5, 2026 - **Apply:** https://www.careerjet.com/jobad/us88f7aa4f95d74dae29a08c390920979c ## About the Role * 8+ years of hands-on Java development experience (Java 21+ preferred). * Strong experience with Spring Boot and RESTful microservices. * Frontend development expertise with Angular 19+ and RxJS. * Experience using AI-assisted development tools such as GitHub Copilot or Windsurf. * Hands-on experience with Docker and cloud-native environments. * Strong knowledge of Kafka, MQ, and event-driven architectures. * Experience with relational and NoSQL databases. * Proficiency with Git and Agile methodologies. * Strong troubleshooting, debugging, and problem-solving skills. Preferred Qualifications: * Experience with CI/CD pipelines and DevOps practices. * Knowledge of JUnit, Mockito, and automated testing frameworks. ## Description We are seeking an experienced Java Full Stack Lead Developer to design, develop, and maintain scalable enterprise applications. This hands-on role requires strong backend and frontend development expertise, leadership capabilities, and experience building cloud-native, event-driven solutions., * Design, develop, and maintain Java-based enterprise applications. * Build and support microservices using Spring Boot. * Develop and deploy containerized applications using Docker. * Implement event-driven architectures leveraging Kafka and MQ. * Collaborate with cross-functional teams to deliver high-quality software solutions. * Optimize application performance, scalability, and security. * Follow Agile development practices, code reviews, testing, and documentation standards.