Linux System Security Engineer

We are seeking a skilled Linux System Security Engineer to design, implement, and maintain security controls across our enterprise infrastructure. This role focuses heavily on securing on-premises environments, automating security processes, hardening Linux systems, and ensuring the overall integrity of critical infrastructure.

The ideal candidate brings deep Linux expertise, strong networking knowledge, and hands-on experience with open-source security tools and automation platforms., * Design, implement, and maintain security controls across Linux-based infrastructure and enterprise systems

• Conduct security audits, vulnerability assessments, and risk analyses
• Apply security patches and remediation measures to mitigate identified vulnerabilities
• Automate security and operational processes using Ansible and scripting languages
• Perform system hardening, including kernel tuning, service management, and secure configuration practices
• Monitor emerging cybersecurity threats and recommend proactive security improvements
• Collaborate with engineers and security professionals to assess risks and implement mitigation strategies
• Develop and maintain security documentation, standards, and procedures
• Support incident response, troubleshooting, and root cause analysis efforts

• Bachelor's degree in Computer Science, Computer Engineering, Cybersecurity, Information Technology, or a related technical field
• 10+ years of experience in Security Engineering, Linux Systems Administration, Infrastructure Security, or a related role
• Strong understanding of cybersecurity principles, security architecture, and industry best practices
• Hands-on experience administering and securing Linux environments
• Experience with open-source technologies including:

• Git
• Elasticsearch/OpenSearch
• Wazuh

• Proficiency in scripting and automation using:

• Bash/Shell
• Python

• Strong understanding of networking concepts and protocols, including:

• TCP/IP
• DNS
• DHCP
• VPN technologies
• Firewalls
• Network segmentation

• Experience developing and maintaining Ansible playbooks and roles
• Excellent communication and collaboration skills
• Ability to work independently and within a team environment
• Passion for continuous learning and staying current on cybersecurity trends
• Ability and willingness to work onsite in Leesburg, VA five days per week
• U.S. Citizenship required with the ability to obtain and maintain a U.S. Government security clearance

Preferred Qualifications

• Experience with DNS technologies such as:

• BIND
• Unbound
• PowerDNS

• Experience with log aggregation and observability tools, including:

• Fluent Bit
• Fluentd

• Experience with virtualization platforms such as:

• VMware
• VirtualBox
• Proxmox

• Experience supporting BSD operating systems
• Experience working within highly regulated or security-focused environments

We offer a highly competitive compensation package and comprehensive benefits, including:

• 6% company 401(k) match with immediate vesting
• Up to $7,000 annually in educational assistance
• 100% employer-paid medical coverage for employees
• 75% employer-paid medical coverage for dependents
• Medical, dental, life, and disability insurance
• Three weeks of paid vacation
• Two weeks of paid sick leave
• Eleven paid company holidays

Why Join Us?

• Work with cutting-edge open-source technologies and security platforms
• Collaborate with highly skilled engineers in a mission-driven environment
• Influence security strategy and infrastructure design
• Enjoy exceptional benefits and professional development opportunities
• Be part of a growing organization where your contributions make a direct impact

We are a fast-growing technology organization focused on solving complex security challenges through innovation, collaboration, and technical excellence. Our team operates in a highly collaborative environment where engineers are empowered to make meaningful contributions, influence technical direction, and drive real impact. If you are passionate about Linux, cybersecurity, automation, and infrastructure hardening, this is an opportunity to join a team where your expertise will directly contribute to mission-critical initiatives., The Midtown Group is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. We are a small, woman-owned business certified by the Women's Business Enterprise National Council (WBENC). Operating from our headquarters in Washington, DC, we provide trusted staffing services nationwide. Our clients include thousands of the most prestigious Fortune 500 companies, law firms, financial organizations, tech innovators, non-profits, and lobbying firms, as well as federal, state and local government agencies.