• Type: Contract
  • Job #3165

Title: Senior Development Engineer (Hybrid)
Location: US-VA-Reston | US-MD-Annapolis Junction

*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government.  Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission.  Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems.  If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

Seeking a talented Senior Development Engineer to join an exciting, complex, mission-focused software development project working with a team of qualified, diverse, individuals.  The selected candidate will join a high performing software development team supporting mission enabling systems and is expected to apply best software engineering principals and Agile engineering methodologies to research, design, develop, and modify application software.  This position requires an active TS/SCI with polygraph and can be located in Reston, VA or Annapolis Junction, MD. 

  • Codes and tests high quality software in a responsive agile team environment driven by dynamically evolving software requirements
  • Uses sound software engineering principles and practices to ensure that developed code is modifiable, efficient, reliable, understandable, and fault tolerant.
  • Follows software process management and control throughout the coding portion of the software development process
  • Supports documentation, design, and process improvement activities.
  • Works with well-defined problems and analyzes, designs, and implements solutions autonomously
  • Leads small tasks in coordination with other technical resources.

You’re required to have this

  • 8 years of relevant experience. A Bachelor’s Degree in Computer Science or related discipline may be substituted for 4 years of experience. A Master’s Degree may be substituted for 6 years of experience. A Ph.D. may be substituted for 7 years of experience.
  • Experience developing/deploying solutions using AWS tools and services
  • Experience with one or more of the following Git, Selenium, Kubernetes, Terraform, Jenkins, Angular, Scala, Akka
  • Experience with SecDevOps Methodologies
  • Experience working in a team practicing Agile Methodologies
  • You must have an active TS/SCI clearance with polygraph


  • Experience with Azure or Google Cloud (GCP)
  • Experience enhancing software to reduce operating time or improve efficiency
  • Experience developing and maintaining applications while addressing accessibility concerns
  • Experience with Continuous Integration/Continuous Delivery (CI/CD)
  • AWS Certifications


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