Security-Cleared SWE 3 - Mission Apps Expert

Cornerstone Defense LLC; Annapolis (MD); On-site; USD 262,000 - 289,000; Full time

Benefits offered by this job

Medical, Dental and Vision plans

401(k) matching

Tuition reimbursement

HSA/FSA options

Life and disability insurance

Paid time off

Referral program

Job summary

Cornerstone Defense LLC is seeking a Software Engineer 3 for Mission Application Dev & Int initiatives in Annapolis Junction, MD. You will design, develop, test, and sustain the GHOSTGEM software suite, including DINO, with emphasis on secure, scalable delivery.

Qualifications include advanced CS degree or equivalent experience, extensive Linux scripting, Python, Rust, NoSQL (MongoDB), Docker/Kubernetes, Helm, and CI/CD (GitLab CI). A TS/SCI w/Poly is required to apply.

Qualifications

• Master's or Bachelor's in computer science or related field with required years of experience (5+ or 7+ depending on degree).
• Strong Linux and scripting experience; modern software stacks and cloud-native tooling are preferred.
• Experience with Python, Rust, NoSQL, containerization, and CI/CD pipelines.

Responsibilities

• Develop, sustain, and troubleshoot the GHOSTGEM software suite (including DINO).
• Integrate with COTS, GOTS, and FOSS components; participate in testing and deployment.
• Collaborate across teams to deliver mission-focused software in a secure environment.

Skills

Linux CLI

Bash scripting

Python

Rust

MongoDB

Docker

Kubernetes

Helm

RabbitMQ

GitLab CI

Ansible

PostgreSQL

Jira

Confluence

Education

Master's degree in Computer Science

Bachelor's degree in Computer Science

Nine years of SWE experience (alternative)

Tools

Jira

Confluence

Job description

Cornerstone Defense LLC is seeking a Software Engineer 3 for Mission Application Dev & Int initiatives in Annapolis Junction, MD. You will design, develop, test, and sustain the GHOSTGEM software suite, including DINO, with emphasis on secure, scalable delivery.

Qualifications include advanced CS degree or equivalent experience, extensive Linux scripting, Python, Rust, NoSQL (MongoDB), Docker/Kubernetes, Helm, and CI/CD (GitLab CI). A TS/SCI w/Poly is required to apply.