Cybersecurity Systems Sustainment Engineer

Cybersecurity Systems Sustainment Engineer

Full-Time in San Antonio, TX

Hybrid (onsite at Forge location minimum 3–4 days per week)

Secret Clearance

Job Description:

Semper Valens Solutions, Inc. (SVS) is seeking a Cybersecurity Systems Sustainment Engineer to support the Joint Cyber Hunt Kit (JCHK), a mobile cybersecurity platform designed for threat hunting, network defense, incident response, digital forensics, and operational technology (OT) security missions.

The JCHK integrates networking, Linux operating systems, Kubernetes-based virtualization, distributed storage, and cybersecurity monitoring and analysis tools into a portable, deployable platform.

The successful candidate will provide hands-on maintenance, troubleshooting, configuration management, and technical support for fielded JCHK systems. This position is ideal for a mid-level engineer with a solid foundation in Linux administration, networking, and virtualization who enjoys solving technical problems and learning new technologies.

You will work as an individual contributor alongside senior engineers and OEM technical teams.

• Systems Sustainment and Operations
• Provide ongoing maintenance, troubleshooting, and technical support for deployed JCHK systems during established support hours (0800–1700 local, Monday–Friday, excluding Government holidays).
• Monitor system performance, diagnose hardware and software issues, and support system recovery and restoration.
• Implement approved software patches, firmware updates, and configuration changes in accordance with OEM configuration management procedures.
• Document system status, maintenance activities, configuration changes, and corrective actions in the designated system of record within two business days of each event.
• Provide technical assistance to operators and coordinate with OEM engineering teams to investigate issues, identify root causes, and implement approved solutions.
• Participate in technical meetings, system demonstrations, and operational support activities.
• Linux, Virtualization, and Infrastructure Support
• Administer and troubleshoot Linux (Rocky, FreeBSD) and Windows operating systems, including system services, user accounts, storage, networking, and application configurations. Support FreeIPA identity management, authentication, replication, and related services.
• Support Kubernetes-based infrastructure, containerized applications, and virtual machines running on JCHK hardware.
• Troubleshoot virtualization, distributed storage, and network connectivity issues involving technologies such as KubeVirt, VMware, and Ceph.
• Support system provisioning, configuration management, and automation using tools such as Ansible and PXE.
• Assist with maintaining core infrastructure services, including authentication, DNS, DHCP, logging, and system monitoring.
• Networking and Cybersecurity Application Support
• Troubleshoot TCP/IP networking, routing, switching, VLANs, firewalls, VPN connectivity (pfSense), and network segmentation.
• Support network security monitoring, packet capture, and threat-hunting applications, including Security Onion, Suricata,Zeek.
• Maintain and troubleshoot cybersecurity applications supporting endpoint monitoring, vulnerability assessment, network analysis, and digital forensics.
• Investigate application errors, service failures, data collection issues, and integration problems across interconnected systems.
• Support cybersecurity operations in isolated, tactical, and operational technology environments.
• Hardware Sustainment and Field Support
• Maintain and troubleshoot JCHK hardware, including servers, network appliances, firewalls, switches, storage devices, and analyst laptops.
• Perform component-level diagnostics, preventive maintenance, and replacement of hardware such as drives, memory, network interfaces, power supplies, and cables.
• Support equipment setup, system recovery, configuration validation, and post-maintenance functional testing.
• Coordinate hardware repairs, replacements, and technical escalations with OEM engineering and logistics personnel.
• Maintain operational readiness of fielded systems and support occasional onsite maintenance at government locations.
• Lift and transport equipment weighing up to 50 pounds repeatedly as required.

Minimum Qualifications:

• U.S. Citizenship (required)
• Security Clearance: Ability to obtain and maintain a Secret security clearance; clearance must be in place before the start of performance
• Certification: Current DoD 8140 qualification meeting the applicable IAT Level II-equivalent requirements, such as CompTIA Security+ CE, maintained throughout performance
• Education: Bachelor's degree in Computer Science, Information Technology, Cybersecurity, Network Engineering, Information Systems, or a related technical discipline; OR equivalent relevant technical experience

Experience:

• Minimum 3–5 years of progressive experience in systems sustainment, systems administration, systems engineering, cybersecurity infrastructure support, or IT operations
• Demonstrated experience administering and troubleshooting Linux operating systems, preferably RHEL-compatible distributions such as Rocky Linux, Oracle Linux, CentOS, or Red Hat Enterprise Linux (RHEL)
• Demonstrated understanding of TCP/IP networking, routing, switching, DNS, DHCP, VLANs, and firewall technologies
• Experience with virtualization technologies such as VMware, KVM, KubeVirt, or equivalent platforms
• Experience with cybersecurity monitoring, network traffic analysis, vulnerability assessment, or incident response tools
• Working knowledge of scripting, automation, or configuration management using Bash, Python, Ansible, or YAML
• Strong troubleshooting and analytical skills, with the ability to diagnose complex hardware and software issues methodically
• Ability to maintain accurate technical documentation, configuration records, and troubleshooting procedures
• Strong written and verbal technical communication skills
• Ability to work independently and coordinate with engineering teams, program managers, and government personnel
• Ability and willingness to travel to government and operational locations for sustainment support

Preferred Qualifications:

• Hands-on experience administering Kubernetes clusters and KubeVirt virtual machines
• Experience with Kubernetes networking using Multus CNI and distributed storage using Rook/Ceph
• Experience supporting Security Onion, Zeek, Suricata, Elastic Stack, and network security monitoring
• Experience configuring and troubleshooting pfSense Plus, FreeBSD, WireGuard, OpenVPN, and IPsec
• Experience with Velociraptor, endpoint telemetry, digital forensic artifact collection, and incident response
• Experience with PXE boot, DHCP, TFTP, Ansible, and automated system provisioning
• Experience administering FreeIPA and Linux identity management services
• Familiarity with Tenable Nessus, Greenbone/OpenVAS, Nmap, and NP-View
• Experience sustaining portable cyber defense systems, deployable network infrastructure, or mobile cyber threat-hunting platforms
• Familiarity with OT/ICS environments and network monitoring in operational technology networks
• Experience supporting disconnected, intermittent, and limited-bandwidth environments
• Familiarity with DoD cybersecurity operations, secure configuration management, system hardening, and vulnerability remediation
• Experience troubleshooting NVMe storage, self-encrypting drives, and secure data sanitization
• Experience working in Defense, Intelligence Community, or other government environments with similar mission or infrastructure requirements

Certifications Preferred, but Not Required (Any of the following):

• Red Hat Certified System Administrator (RHCSA)
• Red Hat Certified Engineer (RHCE)
• Certified Kubernetes Administrator (CKA)
• Certified Kubernetes Security Specialist (CKS)
• Cisco Certified Network Associate (CCNA)
• CompTIA Linux+
• CompTIA Network+
• GIAC Certified Incident Handler (GCIH)
• GIAC Certified Forensic Analyst (GCFA)
• ITIL Foundation or equivalent IT service management certification
• Cloud certification (AWS Certified Solutions Architect, Google Cloud Professional, or CompTIA Cloud+)

About Semper Valens Solutions:

Semper Valens Solutions, Inc. (SVS) is a Service-Disabled Veteran Owned Small Business (SDVOSB) providing Cost Effective Software and Systems Engineering, Field Support, Training and Full Life cycle Support Management to the DOD and VA community.

At Semper Valens, our vision is to remain a creative, cutting edge and cost-effective solutions provider where our shared intellect, industry experience, and technology excellence, make a positive difference in our customer's success. Our solutions help bridge the gap between IT and business prioritizations to optimize budgets, risks and operational processes.

We search for outstanding technical professionals, hiring at all levels of the experience spectrum; intermediate, journeyman and senior. Consider us for your career plan.

Semper Valens Solutions is an Equal Opportunity Employer

Semper Valens Solutions proactively fulfills its role as an equal opportunity employer.

We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital/parental status, pregnancy/childbirth, or related conditions, physical or mental disability, genetic information, status as a Disabled Veteran, Recently Separated Veteran, Active-Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.

If you require a reasonable accommodation to apply for a position with Semper Valens Solutions through its online applicant system, please contact Semper Valens Solutions Human Resources Department at (830) 899-6870.

Semper Valens Solutions is an affirmative action/equal opportunity employer - minorities, females, disabled, and protected veterans are urged to apply. Applicants have rights under Federal Employment Laws.

All Jobs at Semper Valens Solutions: https://sempervalens.com/careers