Software Developer (Systems Software) - Mission Software Developer, with Polygraph

Clearance Level
Top Secret SCI + Polygraph
Software Development
Herndon, Virginia

REQ#: RQ98874

Travel Required: None
Requisition Type: Regular

We are GDIT. The people supporting and securing some of the most complex government, defense, and intelligence projects across the country. We ensure today is safe and tomorrow is smarter. Our work has meaning and impact on the world around us, but also on us, and that’s important.

GDIT is your place. You make it your own by embracing autonomy, seizing opportunity, and being trusted to deliver your best every day.
We think. We act. We deliver. There is no challenge that we can’t turn into opportunity. And our work depends on a Mission Software Developer joining our team to support Government activities at Herndon, VA.

At GDIT, people are our differentiator. As a Mission Software Developer supporting the customer, you will be trusted to provide development engineering and programming support to mission applications. In this role, a typical day will include:


  • Design and develop tools that integrate with commercial applications,
  • Design and develop database management systems, data manipulation techniques and data visualization techniques,
  • Design, develop and modify software systems, using scientific analysis and mathematical models to predict and measure design outcomes and consequences,
  • Develop and direct software system testing and validation procedures, programming and documentation,
  • Conduct trial runs of program and software applications to make sure they produce the desired results, and that the instructions for running those programs are correct,
  • Create documentation of application development activities and subsequent revisions, inserting comments in the code to help others understand relevant functions, processes and procedures,
  • Help write or contribute to instructional manuals to guide end users,
  • Write, analyze, review, and rewrite programs, using workflow charts and diagrams to take advantage of computer capabilities and symbolic logic, and
  • Design, develop and maintain applications within the cloud environment.


  • Preferred Qualifications: Experience developing with HTML5/XML/CSS/JAVA/JavaScript; experience with rapid prototyping and Agile development methodologies; experience developing innovative analytical solutions; experience with enterprise development using Java-based technologies; experience conducting research and using research finding to develop ideas into production systems.
  • Technical Skills: Experience creating user interfaces and integrating project components; experience creating systems that process large amounts of data with the capability to display relevant information to users; experience creating and enhancing text analysis systems that leverage COTS capabilities and machine learning algorithms; experience designing, developing and testing application capabilities; experience building and implementing applications to process large amounts of unstructured data, with the goal of providing predictive insights.
  • Education: Bachelor’s degree in Computer Science, Engineering, or a related technical discipline, or the equivalent combination of education, technical certifications or training, or work experience.
  • Minimum of 8 years related experience
  • Security Clearance Level: Top Secret/SCI with Polygraph


  • Full-flex work week
  • 401K with company match
  • Internal mobility team dedicated to helping you own your career
  • Collaborative teams of highly motivated critical thinkers and innovators
  • Ability to make a real impact on the world around you.

Not sure this job’s the one for you? Check out our other openings at Do you have a friend or colleague this posting describes? Let them know about the opportunity by clicking “Share.” 






COVID-19 Vaccination Requirement: To protect the health and safety of its employees and to comply with customer requirements, GDIT may require employees in certain positions to be fully vaccinated against COVID-19. Vaccination requirements will depend on the status of the federal contractor mandate and customer site requirements.

We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.

GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.