Demo

Senior Software Engineer

Owl Cyber Defense
Columbia, MD Full Time
POSTED ON 11/26/2025
AVAILABLE BEFORE 12/25/2025
Job Title: Senior Software Engineer I Department: Solutions Engineering Reports to: Senior Manager - Solutions Engineering Office: Columbia, MD Work Location: On-site, hybrid, or remote within Eastern or Central time zones

Owl Cyber Defense is a leader and trusted partner in cyber security. We deliver solutions that protect and connect the world’s most critical networks. Owl’s product lines of cross domain, data diode, and portable media solutions provide the strongest available security checkpoints for threat prevention and secure data availability. Our in-depth expertise in security engineering at the operating system level enables us to help government and commercial customers meet ever-evolving cyber security threats.

Job Summary

In this Software Engineering role, you will be responsible for investigating, enhancing, designing, developing, and testing Linux based security systems. You will work on multiple projects identifying and resolving complex security issues. Projects involve deep security vulnerabilities that target the operating system level. This is an opportunity to deepen your operating system security knowledge with a recognized leader in the industry. You will learn SELinux and other security processes to harden complex systems. This opportunity will allow you to be part of a strong technical team with a high degree of autonomy and significant responsibility.

Requirements/Qualifications

  • Education
    • Bachelor’s degree or higher in Computer Science, Engineering or Mathematics
  • Experience
    • 6-12 years of experience in software development (those with additional years of experience are encouraged to apply) with one or more of the following languages: Rust, Java, and Python
  • Knowledge, Skills & Abilities
    • Rust, Java, and Python software development experience
    • Linux/Unix Operating System level programming
    • XML, XSLT, XPROC (or related technical exp) development experience
    • Software testing experience
    • Preferred skills include the following:
      • Experience writing trusted code or providing kernel level functionality
      • Design and developing filter software for Cross Domain Solutions
      • Experience with identification and specification of data attack, data disclosure, etc. associated with file formats and protocols
      • Experience with embedded systems development
      • Experience with SELinux
      • Experience with RHEL, systemd and creating systemd unit files
      • C/C development experience
      • Proficiency in designing, building, and integrating RESTful APIs
  • Additional Competencies/Requirements
    • This position supports hybrid and/or remote work (periodic trips to the office expected)
    • US Citizenship required as candidates must be able to obtain and maintain a security clearance.
About Owl Cyber Defense Solutions, LLC

Owl Cyber Defense Solutions, LLC is a fast-growing cybersecurity solutions company, holding a firm leadership position in network security and secure information transfer. It is a privately-owned US company with offices in Columbia, MD, Danbury, CT and Morrisville, NC. For more information, see http://www.owlcyberdefense.com.

Owl Cyber Defense is an Equal Opportunity / Affirmative Action employer. All qualified applicants will receive equal consideration for employment.

Salary.com Estimation for Senior Software Engineer in Columbia, MD
$124,141 to $151,054
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