Network and Computer Systems Engineer

Job Title: Network and Computer Systems Engineer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: None Employee Type: Regular Percentage of Travel Required: None Type of Travel: None * * * The Opportunity: CACI is seeking an experienced Computer Systems Engineer with strong expertise in Linux system administration, network configuration, cybersecurity compliance, and infrastructure implementation to join our Computer Systems Engineering team supporting NASA's human-rated spacecraft systems in support of our Nation’s space exploration initiative at NASA / Johnson Space Center (JSC) in Houston, TX. Candidates should have experience managing and securing computing environments, including configuring Linux servers (Red Hat and/or Ubuntu), firewalls, VPNs, network switching equipment, and, most of all, possess a great passion to contribute to our Nation’s exploration of space. The candidate will join a team that provides a range of computer systems support to NASA at the Johnson Space Center including user support, security management, network design and operation, account management and provisioning, operation of IT infrastructure services, computing equipment setup, and subject matter expertise for NASA projects. In addition to outstanding technical expertise, the individual must be adaptable, detail-oriented, and able to clearly communicate technical concepts with customers and engineering stakeholders. The individual must share our passion for our Nation's Space Program and share in the excitement of developing the next human-rated space vehicles. Responsibilities: Independently design, implement, configure, secure, and maintain the full infrastructure stack supporting systems, including firewall, VPN, network switch, DNS, DHCP, and Linux end client configurations. Support the full lifecycle of end-user and server systems, including procurement, operating system installation, security hardening, application deployment, and asset tracking. Provide hands-on end-user support as needed, including troubleshooting, system fixes, and configuration updates to meet mission and project needs. Coordinate with NASA service provider organizations to integrate and utilize enterprise services, including identity management, security services, and networking. Configure and manage network infrastructure, including firewalls, VPNs, switches (Cisco or comparable), hardware testbeds, development labs, and isolated environments supporting spacecraft and simulation development. Perform cybersecurity posture assessments, implement remediations, and ensure compliance with selected controls from NIST SP 800-53 Rev 5. Develop, update, and maintain required cybersecurity documentation, including system security plans, network diagrams, interconnection agreements, disaster recovery plans, risk assessments, and incident documentation. Design and implement system baselines and configurations that support mission-critical development while meeting NASA security and operational requirements. Qualifications: Required: Bachelor of Science degree in Computer Engineering, Computer Science, Computer Information Systems, Cybersecurity, or related disciplines required. Minimum of 5 years of hands-on experience in Linux system administration (RHEL and/or Ubuntu), networking, and cybersecurity tasks in a customer-oriented, fast-paced technical environment. Greater experience is valued. Strong working knowledge of computer systems architecture including operating systems, networking, storage, firewalls, VPNs, and cybersecurity concepts. Ability to document system configurations, processes, and architecture clearly and accurately. Effective written and verbal communication skills, with the ability to collaborate with technical teams, NASA stakeholders, and service provider organizations. Ability to work independently, manage multiple technical tasks, and adapt to changing requirements in a dynamic environment. Proficiency with standard technical tools and workflows, and familiarity with ticketing, tracking, or project coordination tools (e.g. Jira, ServiceNow, or similar). Desired: Master of Science degree in Computer Engineering, Computer Science, Computer Information Systems, Cyber Security, or Graduate level coursework or research involving information systems or cyber security. Experience with NASA, DoD, or federal government security compliance frameworks, including FISMA, NIST SP 800-53, and related cybersecurity documentation and assessment processes. Project management skills or Project Management Professional certification. Relevant IT certifications such as ITIL, Cisco, Red Hat, VMware, ISC2, or SANS. Scripting or software automation skills using Bash, PowerShell, Python, or similar languages; familiarity with Git version control. Experience writing technical documentation and maintaining knowledge bases or configuration repositories. Experience working with software development teams and/or administering software development tools such as GitLab, GitHub, Jenkins, Jira, and Docker/Podman. Experience with any of the following is a plus: Service Now, Jira, Confluence, Microsoft Active Directory, Microsoft Group Policy, Puppet, Ansible, PowerShell, Tenable SecurityCenter, HCL BigFix, Splunk, GitLab Continuous Integration, Jenkins, Apache web server, Nginx, Elasticsearch, PostgreSQL. Experience in the NASA/JSC environment or other highly technical, engineering-focused environments. This position is contingent on funding and may not be filled immediately. However, this position is representative of positions within CACI that are consistently available. Individuals who apply may also be considered for other positions at CACI. What You Can Expect: A culture of integrity. At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation. An environment of trust. CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality. A focus on continuous growth. Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy. Pay Range: There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits. The proposed salary range for this position is: $69,600 - 142,700 USD CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic. Click on Search Jobs to find and apply to CACI openings.