Sr. Software Engineer; Back End Developer Security Clearance

Position: Sr. Software Engineer (Back End Developer) with Security Clearance
Sr. Software Engineer (Back-End Developer)
Mid-Level | $100,000 – $164,000 | Newport News, VA | Secret Clearance Required Develop the code behind mission-critical defense systems.
Join Caribou Thunder as a Back-End Software Engineer supporting the Global Command and Control System – Joint (GCCS-J), the Department of Defense’s enterprise solution for joint and multinational command and control operations. You’ll build and modernize software that fuses battlespace intelligence, delivering real-time situational awareness to warfighters across the globe. A Day in the Life – What You’ll Do

• Design, develop, and maintain back-end software components for the GCCS-J platform.

• Write robust, scalable RESTful web services and integrate event-driven architectures.

• Collaborate with multiple geographically distributed development teams in an Agile environment.

• Conduct independent technical investigations and recommend optimal software solutions.

• Architect, implement, and maintain databases (SQL, No

SQL, and Geospatial).

• Support continuous integration and delivery through testing, deployment, and maintenance.

• Communicate effectively with stakeholders and leadership to ensure timely, high-quality deliverables.

Required Qualifications

• Bachelor’s degree in a Science, Technology, Engineering, or Mathematics (STEM) discipline, or equivalent experience

• Advanced proficiency in Java and Object-Oriented Design and Programming

• Experience developing RESTful web services

• Proficiency with event and messaging platforms (e.g., Apache Kafka, Rabbit

MQ, Active

MQ, Graph

QL, NATS, SSEs)

• Experience with multiple database types (SQL, No

SQL, Geo Spatial, Key/Object pair)

• Strong understanding of back-end software architecture and design principles

• Excellent written and verbal communication skills and ability to work in a collaborative environment

• U.S. citizenship with the ability to obtain and maintain a Secret clearance

Preferred Qualifications

• Experience with IDE tools such as VSCode, Eclipse, or Net Beans

• Experience writing microservices using Spring Boot

• Familiarity with build ecosystems (Maven, Gradle, Jenkins)

• Experience with automated testing (JUnit, Jest, Robot, Selenium)

• Working knowledge of Linux and Windows administration

• Experience with Docker, Open Container Initiative (OCI), and container orchestration tools like Kubernetes and Helm

• Familiarity with database design and performance debugging

• Experience with Agile methodologies

• Understanding of Command and Control (C2) Systems and DoD environments

• Familiarity with Application Security and Development Security Technical Implementation Guides (STIGs)

• Experience with static code analysis tools (Sonar Qube, Fortify) and secure coding standards

• Knowledge of networking and troubleshooting

• Proficiency in the Atlassian Suite (JIRA, Confluence, Bitbucket)

• Ability to apply mathematical and statistical concepts to algorithm development

• Background in military intelligence, imagery, or strategic planning

• Active Top Secret Security Clearance If this sounds like you, we’d love to talk. Apply today and build something that matters. Who is Caribou Thunder? Caribou Thunder is a HUBZone-certified small business providing advanced technical and engineering services to the U.S. Department of War and its mission partners. 35+ states and 20+ countries. We’ve delivered trusted solutions for over two decades — strengthening national readiness across missions on land, undersea, in the air, and throughout LEO, MEO, GEO, and deep space.

Why Caribou Thunder? TEAM THUNDER — Mission Focused. Delivery Proven. Ready to Serve. Employee Advocacy Mission Proven Global Reach Skilled Teams Modern Tools Empowering Culture Our engineers and innovators ensure capability from sea floor to space frontier — delivering on time, maintaining compliance, and performing with precision in high-consequence environments. We specialize in Engineering Services, Cybersecurity, Software Development, Modeling & Simulation, Digital Engineering, and Artificial Intelligence — disciplines powering the nation’s most complex technical missions.

Employee Advocacy + Benefits Our people are the heart of Caribou Thunder. We invest in their growth, flexibility, and well-being — knowing their success drives ours. Benefits include:
Premium Health, Dental & Vision Insurance 401(k) with 6% Company Match Flexible PTO & Work Schedule Education & Certification Reimbursement Support for Military Leave Work–Life Balance & Traditional Family Values Your future, your flexibility, your well-being — we invest in you. Apply and let’s connect.