Full Stack Developer - Senior

Obsidian Solutions Group • Quantico, VA

225d

About The Position

We are seeking a Senior Full Stack Developer to support the sustainment and modernization of GCSS-MC through secure, scalable application development. This role involves full lifecycle development across front-end, back-end, and database layers, with a focus on Agile delivery, system integration, and validation testing. The ideal candidate will bring deep technical expertise, cloud experience, and a mission-driven mindset to deliver secure, scalable applications across the full technology stack in a mission-critical environment.

Requirements

• Bachelor's degree in Computer Science, Information Systems, or Engineering
• 7-10 years of experience in full stack development, including front-end, back-end, and database integration
• Active DoD Secret Clearance
• Java certification or equivalent demonstrated expertise
• Proficiency in multiple programming languages such as Java, JavaScript, Python, C++, PHP, SQL
• Experience with database technologies including Oracle, MySQL, SQL Server, MongoDB, or Redis
• Strong understanding of cloud-based architecture and services (e.g., AWS, OCI)
• Experience with API integration, microservices, and secure web application development
• Familiarity with version control tools like Git, SVN, or Mercurial
• Experience with frameworks such as MEAN, Django, LAMP, or Ruby on Rails
• Strong knowledge of Linux and/or Windows operating systems
• Experience working with the Department of Defense or in a secure federal environment
• Familiarity with Agile/SAFe methodologies and participation in sprint planning, backlog grooming, and retrospectives
• Experience supporting configuration management, validation testing (SIT, GAT), and secure code deployment
• Knowledge of DevSecOps practices and CI/CD pipelines
• Experience with Oracle EBS and RICECPW components
• Familiarity with containerization (Docker, Kubernetes)
• DOD 8570 IAT Level I certification required

Responsibilities

• Develop, integrate, and deliver secure, scalable applications using front-end, back-end, and database technologies
• Collaborate with product owners, engineers, and testers to design and implement new functionality and system enhancements
• Participate in Agile ceremonies, write user stories, define acceptance criteria, and support backlog refinement
• Support configuration management and validation testing by developing test plans, scripts, and supporting SIT/GAT execution
• Monitor and optimize application performance, troubleshoot issues, and implement continuous improvements
• Ensure compliance with DoD cybersecurity standards and support secure deployment practices

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Industry: Administrative and Support Services
• Education Level: Bachelor's degree