Software Engineer with Security Clearance

Cornerstone Defense; Herndon (VA); On-site; USD 110,000 - 160,000; Full time

Job summary

Cornerstone Defense is seeking a Software Engineer in Herndon, VA to join a high-security government-focused program. The role emphasizes hands-on software development in Java, Python, or .NET, with cloud and security focus.

Ideal candidates have 3+ years of relevant experience, AWS C2S exposure, and strong collaboration in an agile environment. The position requires TS/SCI with polygraph eligibility and offers growth in a mission-driven team.

Qualifications

• Bachelor's or Master's degree in CS preferred; minimum 3 years relevant experience.
• 1+ years AWS C2S experience.
• 2+ years experience in agile activities.
• Experience in infrastructure as code (Ansible, Puppet, Chef).
• Experience with Java, Python or .NET; REST and SOAP APIs.

Responsibilities

• Develop software using Java, Python or .Net.
• Participate in agile activities and code reviews.
• Work with AWS C2S and cloud-based services.
• Mentor teammates and collaborate in an engineering team.
• Design and build APIs and services using REST/SOAP.
• Security reviews of applications and infrastructure.

Skills

AWS

Agile

Java

Python

.NET

REST APIs

SOAP

Docker

Jenkins

Maven

Ansible

Puppet

Chef

GitHub

Eclipse

DevOps

Oracle/MySQL

Education

Bachelor's degree in Computer Science

Master's degree in Computer Science

Tools

Docker

Vagrant

Maven

Jenkins

Job description

Title: Software Engineer

Location: Herndon, VA

• 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. Required Education, Experience, & Skills : We are looking for experienced Software Developers to join our technology-based program supporting a key Government customer. A bachelor's or master's degrees in computer science are preferred with a minimum of three (3) year's relevant experience with the following skillsets: 1+ years working in AWS C2S 2+ years experience participating in agile activities. Infrastructure as a code language (Ansible, Puppet, or chef as examples) Eclipse developmental duties Git Hub, Dev Ops, Java and Python. Candidate should have experience in security review of applications and infrastructure. 2+ Years experience participating in agile activities. 3+ years of RECENT Java or Python or .Net experience 3+ years of RECENT Database Administration (oracle or MYSQL) experience Research new technologies in object-oriented programming. Experience in Cloud based services. Works well in an engineering team environment with other teammates who varied skills levels. Ability to mentor others Preferred Education, Experience, & Skills : Experience with infrastructure automation technologies like Docker, Vagrant, etc. Experience with build automation technologies like Maven, Jenkins, etc. Experience with with building APIs and services using REST, SOAP, etc Experience with scripting languages like Perl, Shell, etc.