Developer-Java/J2EE Specialist

We are hiring Developer-Java/J2EE Specialist!Role: Developer-Java/J2EE SpecialistSupporting: Large Financial Services ClientLocation: McLean, VA (Onsite) Assignment Type: Contract OnlyDuration: 6 MonthsRole Overview:Are you a seasoned Java developer who thrives in backend architecture, enjoys tackling complex data challenges, and is excited by the practical use of AI in modern software development? This is an opportunity to step into a senior‑level role where your technical depth, judgment, and adaptability will truly matter.You’ll work across multiple initiatives, contributing to the design, development, and evolution of high‑performance applications while helping modernize and future‑proof systems. Key Responsibilities:Design, build, and maintain robust backend services using Java (8+) and modern frameworks.Develop and consume RESTful APIs, ensuring scalability, security, and performance.Apply deep expertise in multithreading, concurrency, collections, generics, lambdas, and I/O to solve real‑world challenges.Work closely with relational databases to design schemas, model data, and write advanced SQL for analysis and troubleshooting.Participate in R&D efforts involving AI, including rapid prototyping, prompt engineering, tool/model evaluation, and integrating AI‑assisted capabilities into applications or workflows.Contribute across the full software development lifecycle, from design and development through testing, deployment, and support.Collaborate with cross‑functional teams and clearly communicate technical concepts to both technical and non‑technical audiences.Adapt quickly to new projects, tools, and environments as priorities evolve.Qualifications: 7–10 years of professional software development experience; Bachelor’s degree in Computer Science or related field (or equivalent experience)Strong backend development experience using Java (8+), with deep expertise in multithreading, concurrency, collections, generics, lambdas, and I/OProven experience building and consuming RESTful APIs using Spring / Spring Boot and related frameworksStrong understanding of Spring Framework, Dependency Injection, and enterprise application designProficiency with Maven or Gradle, and testing frameworks such as JUnit, Mockito, and FitNesseAdvanced skills working with relational databases (e.g., MS SQL), including data modeling and complex SQL queryingExperience handling XML and JSON data formatsHands-on knowledge of Docker, CI/CD pipelines, and DevOps tools such as Jenkins, JIRA, and GitExperience across the full software development lifecycleDemonstrated ability to perform AI-driven R&D, including prompt engineering, rapid prototyping, tool/model evaluation, and integrating AI capabilities into applications or workflowsExperience upgrading or migrating applications to Java 21 or other recent LTS versions (preferred)Python proficiency, particularly for AI/ML development or automation (preferred)Strong problem-solving, analytical, and communication skills; adaptable and able to work effectively across multiple projectsCompensation and Benefits: The pay rate for this position is between $65.00 and $89.00 per hour. Please note that the final rate may be contingent on experience and other factors. This employer is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability. Apex uses a virtual recruiter as part of the application process. Click here for more details. 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 Benefits Department at leaverequest@apexsystems.com or 804-523-8228.