Senior Java Full Stack Developer

Job#: 3040210

Job Description:
Senior Java Full Stack Developer

Location: Hybrid (Any U.S. Office Location (New York/Boston/Jersey City/Dallas) - *Tampa Preferred)

Overview

We are seeking a Senior Java Full Stack Developer to support large-scale application modernization initiatives focused on delivering scalable, cloud-ready, and production-resilient solutions. This role is ideal for a hands-on engineer who excels in both backend and frontend development, with deep expertise in Java, Spring Boot, microservices, and modern web frameworks. The successful candidate will own features end-to-end, contribute to critical production readiness efforts, and collaborate closely with product, QA, and DevOps teams in a fast-paced Agile environment.

Project Overview

This role supports multi-year application modernization programs focused on rebuilding and enhancing enterprise platforms using modern technologies. Key initiatives include UI modernization, API transformation, event-driven integrations, and operational readiness improvements. Teams are working under aggressive delivery timelines with a strong focus on scalability, observability, resilience, and production excellence.

Key Responsibilities

• Design, develop, test, and support full-stack applications using Java, Spring Boot, and Angular or React.
• Own feature delivery throughout the entire software development lifecycle, from requirements refinement through production support.
• Develop and maintain scalable REST APIs and microservices architectures.
• Build reusable, modular, and maintainable frontend components that integrate seamlessly with backend services.
• Implement and support Kafka-based event-driven solutions, including producers, consumers, and messaging integrations.
• Troubleshoot application, deployment, and production issues while ensuring system reliability and performance.
• Participate in code reviews, system design discussions, and technical problem-solving activities.
• Collaborate with QA, DevOps, and product teams to deliver high-quality solutions.
• Support observability, monitoring, alerting, and operational readiness initiatives for production deployments.
• Apply secure coding practices and adhere to regulatory, audit, compliance, and resilience requirements.
• Mentor and provide technical guidance to junior developers through collaboration and code reviews.

Required Qualifications

• 5-8 years of hands-on full-stack development experience.
• Strong expertise in Java and Spring Boot.
• Proven experience designing and developing REST APIs and microservices-based applications.
• Strong frontend development experience with Angular or React.
• Hands-on experience with Kafka or similar messaging/event-streaming platforms.
• Advanced SQL skills with experience writing:
  • Complex joins
  • Subqueries
  • Aggregations
  • Performance optimization and troubleshooting
• Experience working with Docker and containerized applications.
• Understanding of OpenShift and/or Kubernetes concepts.
• Experience with CI/CD pipelines and troubleshooting build/deployment issues.
• Strong debugging, analytical, and problem-solving abilities.
• Ability to independently deliver complex features from design through production support.

Preferred Qualifications

• Experience with Micro Frontend (MFE) architectures.
• Exposure to AI developer productivity tools such as Amazon Q, Kiro, or similar platforms.
• Experience working in highly regulated or financial services environments.
• Familiarity with observability, logging, monitoring, and alerting solutions.

Technical Environment

• Java
• Spring Boot
• Angular or React
• Kafka
• SQL
• Docker
• OpenShift / Kubernetes
• CI/CD Pipelines
• Microservices Architecture
• REST APIs

Ideal Candidate

The ideal candidate is a highly capable full-stack engineer who combines deep hands-on experience with strong ownership and problem-solving skills. They can confidently explain architectural decisions, debug production issues, and deliver enterprise-scale applications while collaborating effectively across engineering, QA, DevOps, and product teams. They serve as a technical mentor within their team and consistently drive quality, reliability, and continuous improvement.

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at or .

Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.

Everforth Apex uses a virtual recruiter as part of the application process. Click for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at

Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our 'Welcome Packet' as well, which an Everforth Apex team member can provide.

Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law.

If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at or . Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered.

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