Sr. Linux Administrator

Job#: 2007619

Job Description:
Below is the full job description, if interested in applying for this position please email a copy of your updated resume and the best time to connect over the phone to Louie at
Job Title: Sr. Linux System Administrator
Required Certification: CompTIA Security+
Client/Government Customer: ManTech/DHA
Hourly/Salary Pay Rate: $62.50/HR and $130,000
Interview Process: One-step Zoom video 45 minute interview conducted by SME asking very technical questions.
Contract Type/Length: 6-month Contract to Hire and have contract until March of 2027 Sr level (5-7 years of experience) Degree: degree preferred not required
Location/Hours of Operation: 100% remote but must reside in the US and be able to work on Central or Eastern time zones. Also, Monday-Friday 8:00am-4:00pm
Daily Responsibilities include:

• Work in the following operating systems: Windows, RedHat Linux.
• Provide support using the following languages: Java, Python, JavaScript, HTML 5.
• Install and configure on-prem server operating systems and AWS-based environments.
• Utilize debugging tools and methodologies for debugging UI, back end and components
• Documentation: Maintain accurate and up-to-date documentation of system configurations, processes, and procedures.
• Performance Optimization: Fine-tune system performance through kernel optimization, resource monitoring, and load balancing.
• Backup and Recovery: Establish and maintain backup and disaster recovery solutions.
• Test and refi ne recovery procedures regularly.
• Automation and Scripting: Develop and maintain shell scripts and automation tools to streamline system management and administrative tasks.
• Collaboration: Collaborate with cross-functional teams and IT professionals to resolve technical issues and contribute to IT projects and initiatives.
• Software Management: Manage software packages and dependencies using package management systems. Ensure software is up to date and secure.
• Monitoring and Troubleshooting: Set up and manage monitoring tools and respond to alerts promptly.
• Troubleshoot system issues and perform root cause analysis.
• Network Management: Configure and troubleshoot network services, TCP/IP, DNS, DHCP, and routing.
• Collaborate with network engineers to optimize network performance.
• Security and Compliance: Implement and maintain security best practices, including firewalls, access controls, and vulnerability assessments.
• Ensure compliance with industry standards and regulations.
• System Administration: Perform system setup, configuration, and routine maintenance tasks on various Linux distributions, including user account management, software installation, and system updates.

Basic Qualifications:

• A minimum of 7 years of relevant work experience.
• Experience building and configuring physical and virtual servers.
• Strong knowledge of database architecture, design, and administration.
• Familiarity with network protocols, routing, and firewall configuration.
• Strong scripting skills (Bash, Python, or similar) for automation and task simplification.
• Experience with monitoring tools (e.g., Nagios, Zabbix) and log management solutions.
• In-depth knowledge of Linux security best practices and experience in hardening systems.
• Demonstrates the ability to think critically and creatively to develop innovative solutions to software problems.
• Proven experience as a Linux Systems Administrator, with proficiency in managing various Linux distributions.
• Demonstrated experience developing technical solutions for IT issues and/or developing plans to integrate new technologies and IT requirements.
• Demonstrated experience resolving technical issues with: Cloud-based environments, Windows, RedHat, Linux, and Microsoft Office applications.
• Demonstrated excellence in written and verbal communication and outstanding customer service skills working with senior and executive level staff.

Preferred Qualifications:

• Experience supporting DoD health care systems.
• Experience in writing automation test cases to validate system requirements.
• Experience working with Microsoft SCCM, Azure, AWS and VMware vSphere.
• Bachelors degree in Computer Science, Information Technology, or related field.
• Working knowledge of military health systems, along with the positive track record in the DHA (Defense Health Agency) customer space.

Clearance Requirements:

• ship.
• Must be able to obtain or currently have an active interim Secret clearance.

Physical Requirements:

• Working with computers.
• Communicating with others to exchange information.
• Must be able to lift and move hardware weighing up to 50 pounds.
• Moving about to accomplish tasks or moving from one work site to another.
• Requires frequently communicates with co-workers, management, and customers.
• The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
• Sedentary work that primarily involves: sitting, standing, walking, talking, and must be able to remain in a stationary position 50%.

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at or .

EEO Employer

Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at or .

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRated's Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico.