About Careertakes

👉 Important disclosure: Careertakes is a third-party recruiting platform supporting this hiring process. If selected, you will be employed directly by our client, Business Consulting and Services.

Applicants for this role may also receive access to additional matched opportunities through the Careertakes platform.

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What You’ll Do

Confidential Client is seeking a System Software Engineer to join a fully onsite team in San Diego, CA. You will maintain, secure, and configure Windows and Linux system environments that support mission-critical software. This is a hands-on role focused on system maintenance, cybersecurity compliance, automation, and configuration management.

• Maintain and upgrade system software and firmware for Windows and Linux hosts
• Develop and maintain automation scripts (PowerShell, Bash, Python) to deploy patches and streamline administration
• Implement and verify DISA STIG and DoD cybersecurity requirements, including system hardening and vulnerability remediation
• Execute patch management, vulnerability scanning follow-up, and remediation tracking
• Support software testing, validation, and technical documentation for releases and configuration changes
• Manage software version control, change control, and configuration management processes
• Troubleshoot system issues and support incident response procedures with clear documentation
• Assist with C&A / Authorization documentation, risk assessments, and other compliance deliverables
• Collaborate with cross-functional teams, including test engineers and DevOps, to integrate system software updates into deployment pipelines

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Qualifications

Required (minimum)

• 5+ years of relevant experience in systems or software engineering and a Bachelor’s degree in engineering, computer science, or a related field (or equivalent experience)
• Active Secret clearance required (must already hold an active Secret clearance to be considered)
• Hands-on experience administering and supporting Windows and/or Linux systems in production environments
• Experience with DISA STIGs, DoD cybersecurity controls, patch management, and vulnerability remediation processes
• Familiarity with software version control and issue tracking tools (e.g., Git, JIRA)
• DoD 8570 IAT Level II (Security+ CE or equivalent) or comparable certification
• Strong scripting skills in one or more: PowerShell, Bash, Python
• Experience supporting software testing, validation, and documentation activities
• Ability to support configuration management and software change control processes

Preferred

• Experience with tactical shipboard systems and/or CANES environments
• Experience automating patch deployments across mixed OS environments
• Prior work on DoD or defense-contractor programs supporting cybersecurity accreditation

Legal & location requirements

• This is a full-time, onsite role in San Diego, CA. Candidates must be able to work onsite as required by the program.
• Active Secret clearance is required and candidates will be subject to background checks.
• Applicants must be legally authorized to work in the United States. Confidential Client will comply with applicable federal, state, and local hiring laws.

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Compensation & Employment Type

• Employment type: FULL_TIME
• Base salary: USD 90,000–110,000 per year (salary range provided by the client)
• Location: Onsite — San Diego, CA (Confidential Client)

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Keywords & Skills (search-optimized)

• System Software Engineer San Diego, CA
• Windows/Linux system administration
• DISA STIG compliance, DoD cybersecurity
• Patch management & vulnerability remediation
• PowerShell, Python, Bash scripting
• Secret clearance, CANES, tactical shipboard systems

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Equal Opportunity & Hiring Transparency

Careertakes and our client are Equal Opportunity Employers committed to building a diverse and inclusive workforce. We prohibit discrimination or harassment of any kind. To support a fair and efficient hiring process, AI tools may be used to assist with application review or resume screening. These tools do not replace human decision-making. Final hiring decisions are made by people.

If you have questions about how your data is used, please contact us directly.