Software Engineer with Security Clearance

Cornerstone Defense; Herndon (VA); On-site; USD 120,000 - 180,000; Full time

Job summary

Cornerstone Defense in Herndon, VA is seeking a Software Engineer to join a mission-focused team. The role requires active TS/SCI with polygraph and hands-on software development across Java, Python, and .Net in AWS C2S environments, with Agile practices.

You will mentor peers, participate in security reviews, and contribute to infrastructure automation with Docker, Maven, Jenkins, and REST/SOAP services. Bachelor's (or Master's) in CS preferred and 3+ years of relevant experience.

Qualifications

• Bachelor's or master's in CS preferred with 3+ years of relevant experience.
• Experience in AWS C2S and cloud-based services expected.
• Familiar with infrastructure automation and CI/CD tooling.

Responsibilities

• Develop software in Java, Python, or .Net within AWS or cloud environments.
• Collaborate in Agile ceremonies and contribute to CI/CD pipelines.
• Conduct security reviews of applications and infrastructure.
• Mentor junior developers and support team growth.

Skills

Agile software development

Mentoring teammates

Security-minded development

Cloud services

Education

Bachelor's degree in Computer Science

Master's degree preferred

Tools

AWS

GitHub

Docker

Vagrant

Maven

Jenkins

REST/SOAP APIs

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.