# Senior Software Engineer — Secure Mission Systems at Rackner

Senior Software Engineer — Secure Mission Systems at Rackner in Remote. Remote. Posted July 22, 2026.

- Company: Rackner
- Location: Remote
- Workplace: Remote
- Experience: 10+ years
- Posted: 2026-07-22
- Apply: https://job-boards.greenhouse.io/rackner/jobs/4717768005
- Source: https://jobmagic.ai/jobs/senior-software-engineer-secure-mission-systems-rackner-c2tzrz

## Requirements

- Bachelor’s degree in Computer Science or a related field
- 10+ years of software engineering experience, including hands-on design, development, testing, or integration work
- Hands-on experience with CI/CD, Kubernetes, GitLab, and OpenShift
- Strong understanding of secure software-development lifecycle practices
- Experience using Fortify and/or JFrog Xray for automated security scanning and vulnerability remediation
- Integrating AI models or AI-enabled capabilities into software applications
- Building automated unit and integration tests
- Clear technical documentation and stakeholder communication skills

## Description

**Senior Software Engineer — Secure Mission SystemsLocation: **Mainly remote, with onsite work in Laurel, Maryland, typically one day approximately every six weeks for team-wide sprint planning
**Clearance: **Active final DoD Secret clearance required

**Build Secure Software for High-Impact Defense Missions**

Rackner is seeking a Senior Software Engineer to design, build, test, and deliver secure mission-planning and decision-support software for a Department of Defense customer.

This role gives you broader ownership than a traditional feature-development position. You will contribute across application engineering, secure CI/CD, containerized deployment, automated testing, cybersecurity remediation, and AI-capability integration. You will work alongside experienced technical teams and help move complex software from design through secure delivery.

This position is contingent upon contract award and final customer approval.

**What You Will Do**

- Design, develop, test, and integrate new software capabilities.

- Build and maintain secure CI/CD workflows using GitLab and related development systems.

- Support containerized application deployment through OpenShift and Kubernetes.

- Apply secure software-development lifecycle practices throughout delivery.

- Integrate AI models and support capabilities involving LLM assistants, retrieval-augmented generation, and agentic AI.

- Develop unit, integration, and system-level tests.

- Use automated security tools such as Fortify, JFrog Xray, and OWASP ZAP.

- Investigate vulnerabilities and support cybersecurity remediation.

- Participate in code reviews, technical reviews, and solution-design discussions.

- Create software-design documents, sequence diagrams, workflow descriptions, and test reports.

- Communicate progress, blockers, risks, and schedule concerns to technical and program stakeholders.

- Collaborate with customer technical leads in remote and onsite settings.

**What You Will Bring**

- Bachelor’s degree in Computer Science or a related field

- 10+ years of software engineering experience, including hands-on design, development, testing, or integration work

- Hands-on experience with CI/CD, Kubernetes, GitLab, and OpenShift

- Strong understanding of secure software-development lifecycle practices

- Experience using Fortify and/or JFrog Xray for automated security scanning and vulnerability remediation

- Integrating AI models or AI-enabled capabilities into software applications

- Building automated unit and integration tests

- Clear technical documentation and stakeholder communication skills

**Helpful Experience**

- OWASP ZAP or comparable application-security testing tools.

- Artifactory or similar artifact-management platforms.

- LLM assistants, retrieval-augmented generation, or agentic-AI components.

- Jira, Confluence, and Slack in a structured development environment.

- Software delivery supporting defense, national-security, or other regulated missions.

- Customer-provided development systems and secure internal networks.

**Why Rackner**

At Rackner, you will have the opportunity to build technology that supports critical defense and public-sector missions.

You will work on more than isolated coding tickets or pipeline tasks. This role brings together hands-on application development, secure software delivery, container platforms, automated testing, cybersecurity, and emerging AI capabilities.

Rackner has delivered more than $30 million in recent federal awards and supports mission-critical work across defense, civilian, and public-sector environments. We are looking for a senior software engineer who can help build on that momentum by delivering reliable software, strengthening security, and helping teams move complex mission capabilities forward.

**Benefits & Professional Growth**

- Competitive compensation

- Company-supported certifications aligned with current and future program work

- 401(k) with 100% company match up to 6%

- Medical, dental, vision, life, and disability coverage

- Paid time off and company holidays

- Remote-work support and home-office equipment plan

- Fitness and wellness reimbursement

- Weekly pay schedule

- Professional-development and future growth opportunities

**Apply**

If you are a senior software engineer who wants broader ownership across secure application development, container platforms, DevSecOps, software assurance, and AI integration, we would like to hear from you.