Mid-Level Full Stack Java Developer

C. Mack Solutions

. Design, develop, enhance, debug, and implement software in an Agile environment .

Posted 10/23/2026full-timeAshburn • Virginia • United StatesMid-LevelSenior💰 $75,000 - $155,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing, developing, and implementing secure, scalable applications using Java and JavaScript frameworks. Proficient in Agile methodologies, API integration, and cloud technologies, with strong communication skills for collaboration and documentation.

Highest-signal resume keywords

Java Application DevelopmentJavaScript Frameworks (Angular)Agile Development (JIRA)API Integration (REST/SOAP)Cloud Technologies (AWS)

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

JavaJavaScriptHTML5JQuerySpring FrameworkAutomated Testing (Selenium, JUnit, Cucumber)Build Automation (Gradle, Maven)Database ManagementAPI DevelopmentSoftware Debugging

Soft Skills

Strong Verbal CommunicationStrong Written CommunicationCollaborative TeamworkConstructive Feedback

Tools & Technologies

Agile Tools (JIRA)Cloud PlatformsDevOps Tools (Harness, Jenkins)Generative AI Code Assist Technologies

Certifications & Qualifications

CBP Public Trust Clearance

Industry Keywords

Federal ProgramHomeland SecurityMission-Critical ApplicationsHigh-Impact Applications

Tech Stack

Tools & technologies

AngularAWSCloudGradleJavaJavaScriptJenkinsjQueryJUnitMavenSeleniumSOAPSpring

About the role

Key responsibilities & impact

Design, develop, enhance, debug, and implement software in an Agile environment
Create and support applications for a high-impact Federal program supporting homeland security
Develop across front-end interfaces and back-end services
Integrate APIs, cloud platforms, and complex data systems
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
Troubleshoot and resolve software defects and performance issues
Participate in code reviews and provide constructive feedback
Document software specifications, design processes, and user guides
Stay updated on industry trends and emerging technologies

Requirements

What you’ll need

Must live within the DC, MD, VA area
U.S. Citizenship is required
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
Experience supporting 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 years 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 API consumption and creation
Experience with JavaScript, HTML5, and/or jQuery
Cloud experience
Strong verbal and written communication skills
Preferred: Full stack development using the Spring Framework
Preferred: Automated testing with Selenium, JUnit, Cucumber, etc.
Preferred: Build automation with Gradle or Maven
Preferred: DevOps and Continuous Delivery tools such as Harness and Jenkins
Preferred: Experience with AWS
Preferred: Experience using generative AI code assist technologies
Must reside in a U.S. state where the company is currently registered to employ team members

Benefits

Comp & perks

Medical insurance
Dental insurance
Vision insurance
Retirement savings plans
Paid time off
Other supplemental programs