Software Engineer - Full Stack Developer (TS/SCI with Poly Requi with Security Clearance

Job Category: Software Engineering Requisition Number: SOFTW002233 Posting Details *

• Posted: July 29, 2026
• Full-Time
• On-site
• Salary Range:

$124,092.80 USD to
$207,251.20 USD

• Locations Showing 1 location Chantilly Chantilly, VA, USA Chantilly Chantilly, VA, USA +0 more locations less locations Job Details Description GCI embodies excellence, integrity and professionalism. The employees supporting our customers deliver unique, high-value mission solutions while effectively leverage the technological expertise of our valued workforce to meet critical mission requirements in the areas of Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber Operations. We maximize opportunities for success by building and maintaining trusted and reliable partnerships with our customers and industry. At GCI, we solve the hard problems. As a Software Engineer, a typical day will include the following duties: The Software Engineer will design, develop, code, test, and debug complex software products, or make significant enhancements to existing software. The ideal candidate is a hands-on platform builder with significant experience in developing scalable software applications, with experience in analytics using large data sets. They must have strong, firsthand technical expertise in a variety of configuration management and big data technologies and the proven ability to fashion robust solutions that can manage large data sets. They must be at ease working in an agile environment with little supervision. This person should embody a passion for continuous improvement and innovation.  KEY RESPONSIBILITIES
• Work with a team to analyze existing software applications and tools, and recommend new technologies and methodologies to improve system performance and usability.
• Design, develop, test, debug, and deploy new software tools that extend or replace existing capabilities.
• Advise hardware engineers on machine characteristics that affect software systems, such as storage capacity, processing speed, and input/output requirements and works with them to resolve incompatibilities.
• Write and update technical documentation such as user manuals, system documentation, training materials, processes and procedures.
• Collaborate cross-functionally with data scientists, analysts, project managers and other engineers and analysts.
• Provide ongoing maintenance, support, and enhancements in existing systems and platforms.
• Troubleshoots complex problems and provides customer support for software systems and application issues.
• Provide recommendations for continuous improvement.
• Work alongside other engineers on the team to sustain and advance our organization’s capabilities.  EDUCATION AND EXPERIENCE
• Bachelor's degree in Computer Science, Information Technology, or other related technical discipline, or equivalent combination of education, technical certifications, training, and work/military experience.  REQUIRED QUALIFICATIONS
• Demonstrated hands-on experience with modern programming languages including Java, JavaScript, and Python.
• Demonstrated hands-on experience developing with cloud-based services such as AWS.
• Demonstrated hands-on experience with developing and implementing microservices architecture using Spring Boot.
• Demonstrated hands-on experience with Linux.  DESIRED QUALIFICATIONS
• Demonstrated hands-on experience in programming and software development with web and client/server applications using Java, JavaScript, and Python.
• Demonstrated hands on experience working with PostgreSQL and Apache NiFi.
• Demonstrated hands-on experience with Linux-based systems and shell scripting
• Demonstrated hands-on experience with build automation technologies like Maven, Jenkins, etc.  A candidate must be a US Citizen and requires an active/current TS/SCI with Polygraph clearance.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans     Qualifications Skills Behaviors : Motivations : Education Preferred Bachelor of Science or better in Computer Science or related field. Experience Required 8 years: Demonstrated work related experience. Licenses & Certifications Equal Opportunity Employer