Security-Cleared SWE 3 - Mission Apps Expert

Cornerstone Defense LLC

Annapolis (MD)

On-site

USD 262,000 - 289,000

Full time

6 hours ago
Be an early applicant
Application generator

Get a reply from this employer — a resume and cover letter tailored to exactly what they’re hiring for.

Get past ATS filters

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.

Get your free, confidential resume review.

or drag and drop your file here.

Similar jobs

Similar jobs worth comparing

Software Engineer 3 (Mission Application Dev & Int) with Security Clearance
Software Engineer 3 (Mission Application Dev & Int) with Security Clearance

Cornerstone Defense LLC • Annapolis (MD)

On-site
USD 262,000 - 289,000
Medical, Dental and Vision plans
401(k) matching
Tuition reimbursement
+4
Software Engineer 2: Mission Applications & Intel (TS/SCI)
Software Engineer 2: Mission Applications & Intel (TS/SCI)

Cornerstone Defense LLC • Annapolis (MD), Northern (KY)

Hybrid
USD 170,000 - 190,000
Medical coverage
Dental coverage
401(k)
Software Engineer 2 (Mission Application Dev & Int)
Software Engineer 2 (Mission Application Dev & Int)

Cornerstone Defense LLC • Annapolis (MD), Northern (KY)

On-site
USD 170,000 - 190,000
Medical coverage
Dental coverage
401(k)
Security-Cleared Software Engineer (TS/SCI + Poly)
Security-Cleared Software Engineer (TS/SCI + Poly)

Cornerstone Defense LLC • Annapolis (MD)

On-site
USD 170,000 - 190,000
Generous PTO
401(k)
HSA and FSA options
+7
Software Engineer 2 (GHOSTGEM) with Security Clearance
Software Engineer 2 (GHOSTGEM) with Security Clearance

Cornerstone Defense LLC • Annapolis (MD)

On-site
USD 170,000 - 190,000
Medical
Dental
Vision
+2
Software Engineer II - Mission-Critical GHOSTGEM Suite
Software Engineer II - Mission-Critical GHOSTGEM Suite

Cornerstone Defense LLC • Annapolis (MD)

On-site
USD 170,000 - 190,000
Medical
Dental
Vision
+2
Security-Cleared SWE - Docker/Kubernetes (Onsite MD)
Security-Cleared SWE - Docker/Kubernetes (Onsite MD)

BeyondSOF • Annapolis (MD)

On-site
USD 120,000 - 180,000
Security-Cleared SWE: Python/Kotlin/Java + OpenSearch/AWS
Security-Cleared SWE: Python/Kotlin/Java + OpenSearch/AWS

Captivation-Software • Maryland

On-site
USD 130,000 - 270,000
401k plan
HSA contribution
Insurance coverage
Software Engineer SWE Skill Level 3
Software Engineer SWE Skill Level 3

CTRL + LLC • Corridor North (MD)

On-site
USD 80,000 - 110,000
Flexible healthcare options
Dependent Care FSA
Tech reimbursement
+6
Senior Java Software Engineer 2/3 - TS/SCI Clearance
Senior Java Software Engineer 2/3 - TS/SCI Clearance

Captivation-Software • Maryland

On-site
USD 130,000 - 270,000
401k contribution
HSA contribution
Comprehensive insurance