Java Software Engineer

Company: C. Mack Solutions, LLC
Location: Ashburn
Posted on: February 17, 2026

Job Description:

Job Description Job Description Description: The Java Software Engineer must be able to design, develop, enhance, debug, and implement software in an Agile environment. Resources will be members of highly effective Agile teams that create and support applications for a high-impact Federal program supporting homeland security. This role requires full stack development capabilities across a diverse technology stack, with work spanning both front-end interfaces and back-end services, including integration with APIs, cloud platforms, and complex data systems. Responsibilities: Design, develop, and implement software applications using JavaScript. Collaborate with IT infrastructure teams to integrate APIs and enhance system performance. Write clean, maintainable code and conduct thorough testing to ensure software reliability. Troubleshoot and resolve software defects and performance issues in a timely manner. Participate in code reviews and provide constructive feedback to peers. Document software specifications, design processes, and user guides for future reference. Stay updated on industry trends and emerging technologies to continuously improve skills and knowledge. Requirements: You must live within the DC, MD, VA area. U.S. Citizenship is required. Candidate must be able to obtain CBP Public Trust clearance. Bachelor’s degree plus at least 5 years of work experience Demonstrated ability to develop and maintain secure, scalable, and high-performance applications Support back-end services and mission-critical business logic using Java and related frameworks At least 4 years of experience developing Java applications and associated frameworks At least 4 year of development experience using JavaScript and/or JavaScript frameworks such as Angular At least 3 years of experience working in a story-based Agile team development environment using JIRA or a similar tool Strong database skills Experience with REST and/or SOAP based APIs consumption and creation Experience working with JavaScript, HTML5, and/or jQuery Cloud Experience Strong communication skills, both verbal and written Preferred Skills and Experience: Full stack development using the Spring Framework Automated testing with Selenium, JUnit, Cucumber, etc Build automation with Gradle or Maven DevOps and Continuous Delivery tools – such as Harness and Jenkins Experience with AWS Experience using generative AI code assist technologies

Keywords: C. Mack Solutions, LLC, North Bethesda , Java Software Engineer, IT / Software / Systems , Ashburn, Maryland