Network engineer providing advanced engineering, integration, and sustainment support for Navy anti-terrorism/force protection networked systems. Responsibilities include engineering and configuring Juniper, Aruba, Cisco, Antaira, and Cambium network equipment; deploying and troubleshooting networks across labs, shore facilities, and data centers; implementing secure architectures aligned with RMF and STIGs; performing system hardening and vulnerability remediation; and conducting site surveys and installations during 50%+ travel.… Requires an active interim Secret clearance with ability to obtain fully adjudicated Secret clearance, bachelor's degree and 5 years of network experience (or HS diploma and 8 years), DoD 8570/8140 baseline certification, and hands-on expertise with Juniper, Aruba, and Cisco platforms.
system-hardening jobs in San Diego
Sr. Principal Computer Systems Architect supporting Mission Systems N-OSSM development programs, responsible for designing and defining system architectures for complex heterogeneous networks spanning Linux, Windows, and VMware environments.… The role focuses on infrastructure design, hardware/software installation and upgrades, system hardening, scripting automation, monitoring, troubleshooting, and security support for software development and test automation teams. Requires 8+ years of experience with deep Linux/Red Hat expertise, LDAP, DNS, Splunk, system hardening, STIGs compliance, and scripting in Bash, Ansible, and Python. Must be US Citizen able to obtain Secret clearance and work full-time on-site at San Diego campus.
Senior IT Cyber Security Specialist responsible for enterprise vulnerability scanning, system hardening, and patch management using tools like Nessus and HBSS. Administers security technologies including SIEM platforms, firewalls, endpoint protection, and VPNs while investigating security incidents and performing root cause analysis.… Requires 7+ years of progressive IT/cybersecurity experience in DoD or defense contractor environments, with strong Linux administration and Bash scripting skills. Must hold DoD 8570.1-M IAM Level III certification (CISSP, CISM, or GSLC) and maintain compliance with NIST SP 800-171, CMMC Level 2, and DISA STIGs.
Senior IT Systems Engineer leading a team of systems and network engineers to maintain Linux and Windows computing infrastructure supporting Naval tactical systems testing. Responsibilities include IT infrastructure assembly and troubleshooting, virtualization management (VMware/OpenShift), security compliance (DISA STIG, RMF), hardware evaluation and procurement, and on-site support for DoD/Navy labs.… Requires 7+ years IT infrastructure experience, networking fundamentals (TCP/IP, routing, switching, firewalls), and virtualization expertise; DoD/Naval systems background and Security+ or CCNA certification are preferred.
Network engineer providing advanced engineering, integration, and sustainment support for Navy AT/FP networked systems worldwide. Responsible for engineering, configuring, and sustaining Juniper, Aruba, Cisco, and specialized switching solutions across NIWC labs, shore facilities, and data centers.… Requires hands-on expertise in enterprise networking (routing, VLANs, VPNs, firewalls), system hardening, RMF/STIG compliance, and field deployment with 50%+ travel. Must hold or obtain a Secret clearance and DoD 8570 baseline certification (Security+ or higher, plus Juniper/Cisco vendor certs).
Network Engineer supporting Navy AT/FP systems will engineer, configure, and sustain Juniper, Aruba, and Cisco network equipment across NIWC Pacific and Naval installations worldwide. The role encompasses end-to-end system lifecycle management—staging, integration, testing, fielding, and sustainment—with emphasis on secure network architectures aligned with RMF and STIGs, system hardening, and compliance validation.… Requires hands-on expertise in Juniper (EX/QFX/SRX), Aruba (switching and wireless), Cisco (Catalyst, ISR, ASA), routing protocols (OSPF, BGP), VLANs, VPNs, and firewalls. Must hold an active interim Secret clearance with ability to obtain fully adjudicated Secret clearance, DoD 8570/8140 baseline certification (Security+, JNCIA, or CCNA minimum), and 5+ years experience with a bachelor's degree or 8+ years with HS diploma.
Network Engineer responsible for engineering, configuring, and sustaining mission-critical networked systems including Cisco, Aruba, Juniper, and Cambium platforms. Manage end-to-end system lifecycle from staging through sustainment, deploy secure network architectures aligned with RMF and STIGs, and perform system hardening and vulnerability remediation.… Support integration in DoD labs, shore facilities, and data centers, with frequent travel to customer sites for installations, troubleshooting, and operational verification. Requires minimum 8 years of network engineering experience, DoD Secret clearance, and hands-on expertise in Juniper, Aruba, and Cisco switching, routing, and firewall technologies.
Lead cyber systems engineering activities for a joint development program supporting DoD and national security missions. Design cyber-resilient architectures protecting data transport, targeting, and command-and-control capabilities; conduct risk assessments and vulnerability analyses; ensure compliance with cybersecurity standards and system accreditation requirements.… Requires 18+ years in systems engineering, cybersecurity engineering, or advanced technology development within DoD environments, with hands-on experience in secure architecture, prototyping, and technology integration.
Design, engineer, and sustain mission-critical networked systems for DoD customers, with hands-on responsibility for Cisco, Juniper, and Aruba platforms across switching, routing, firewalls, and wireless. Deploy end-to-end network solutions in labs, shore facilities, and shipboard environments; implement secure architectures aligned with RMF and STIGs; perform system hardening and vulnerability remediation.… Requires 8+ years of network engineering experience, DoD Secret clearance, and DoD 8570/8140 baseline certification (Security+ minimum).
This Systems Engineer role supports Naval tactical applications and the Navy's combat systems through IT infrastructure configuration management, hardware/software integration, and technical support. The engineer will work with cross-functional teams on requirements, design documentation, test events, and platform integration while adhering to government security and reliability standards.… Required experience includes IT system production planning, network architecture, platform integration, STIG hardening, and core networking concepts (TCP/IP, routing, firewalls). Preferred skills include DoD/Naval systems experience, container technologies (Docker, Kubernetes), Linux administration, scripting (Python, Bash, PowerShell), and automation tools (Jenkins, Ansible).
Seeking an experienced Systems Administrator to maintain critical defense enterprise infrastructure in San Diego, including Windows servers, domain controllers, cloud resources, and VMware environments. The role requires dual network and systems administration responsibilities, including TACLANE cryptographic encryptor configuration, troubleshooting site outages, vulnerability remediation (ACAS/Nessus), system hardening, and user account management.… Requires 4+ years designing and deploying enterprise Windows infrastructure (AD, DHCP, DNS, GPO, WSUS) and 2+ years in a Network or Systems Administrator role, plus DoD 8570 IAT Level II compliance (Security+ or equivalent).
CyberSecurity Engineer III will design, deploy, and administer Secret and Top Secret infrastructure across on-premises and private cloud environments, managing VMware virtualization, RHEL/Windows systems, and network infrastructure. The role requires implementing security controls per NIST SP 800-53 and DISA guidelines, automating system builds and patching with Ansible and Jenkins, and remediating vulnerabilities using tools like Nessus and Splunk.… You'll collaborate across infrastructure, cybersecurity, and mission teams to maintain secure environments throughout development, accreditation, and operations, with five or more years of infrastructure engineering or systems administration experience required.
Cloud Engineer III will design, deploy, and sustain secure cloud solutions across AWS, Azure, and government cloud environments (GovCloud, Azure Government) for mission-critical defense applications. The role requires deep expertise in cloud architecture, distributed systems, Infrastructure as Code, CI/CD pipelines, DevSecOps, containerization (Docker, Kubernetes), and cloud-native patterns.… You will work across cross-functional teams including engineers, cybersecurity personnel, and government stakeholders to architect hybrid cloud, edge-to-cloud, and enterprise platform solutions meeting DoD compliance standards (Impact Levels, Zero Trust, RMF, STIGs). Responsibilities include automating infrastructure, configuring security controls, managing cloud networking and identity, and communicating technical decisions and risks to technical and executive audiences.
ManTech seeks a Systems Administrator to maintain critical enterprise infrastructure for national security operations in San Diego, supporting the 0100–0900 morning shift. The role requires administering Windows servers, domain controllers, cloud resources, and VMware environments; configuring and troubleshooting KG-175 (TACLANE) cryptographic network encryptors; performing vulnerability remediation with ACAS/Nessus; and executing rapid incident response and site outage troubleshooting.… Candidates must have 4+ years of enterprise Windows infrastructure experience (AD, DHCP, DNS, GPO, WSUS), hands-on TACLANE configuration expertise, and DoD 8570 IAT Level II compliance (Security+ CE or equivalent). The position includes up to 25% travel (CONUS/OCONUS) and requires an active Top Secret clearance with SCI eligibility.
Network engineer responsible for engineering, configuring, and sustaining mission-critical networked systems including Cisco, Aruba, Juniper, and Cambium platforms. The role spans end-to-end system lifecycle activities—staging, integration, testing, fielding, and sustainment—with emphasis on secure network architecture, compliance (RMF, STIGs), vulnerability remediation, and hands-on field deployment.… Requires 8+ years of DoD or enterprise network engineering experience, hands-on expertise with Juniper Junos OS, Aruba switching/wireless, Cisco switching/routing/firewalls, and DoD 8570/8140 certification (Security+ minimum). Involves frequent travel (50%+) to customer sites, shipboard environments, and remote troubleshooting.
Network Engineer supporting Navy AT/FP systems at NIWC Pacific, responsible for engineering, configuring, and sustaining advanced networking equipment (Juniper, Aruba, Cisco) across shore facilities and data centers worldwide. Design and implement secure network architectures compliant with RMF and STIGs, perform system hardening and vulnerability remediation, and support end-to-end lifecycle from staging through sustainment.… Requires active interim Secret clearance with ability to obtain full adjudication, bachelor's degree plus 5 years experience (or HS diploma plus 8 years), DoD 8570/8140 baseline certification, and hands-on expertise in Juniper Junos OS, Aruba switching/wireless, Cisco switching/routing/firewalls, Layer 2/3 protocols, and mission-critical system support.
Network Engineer supporting Navy AT/FP systems worldwide, responsible for engineering, configuring, and sustaining Juniper, Aruba, and Cisco network platforms across shore facilities and data centers. Role requires hands-on expertise in network design, integration, testing, and lifecycle sustainment, with emphasis on secure architectures, RMF compliance, system hardening, and vulnerability remediation.… Candidate must hold an active interim Secret clearance with ability to obtain full Secret adjudication, travel 50%+ to CONUS/OCONUS sites, and support mission-critical networked systems protecting Navy installations from security threats.
The Information Security Analyst II will protect both operational technology (OT) and information technology (IT) environments at a pharmaceutical manufacturer. Responsibilities include securing industrial control systems, SCADA platforms, PLC-based automation, manufacturing execution systems, and enterprise endpoints; managing OT asset inventory and vulnerability remediation; implementing security controls and hardening standards; and supporting threat detection, incident response, and security assessments.… The role requires 3+ years in information security or system administration with direct OT/ICS/SCADA/manufacturing experience, working knowledge of Purdue Enterprise Reference Architecture and relevant standards (ISA/IEC 62443, NIST SP 800-82, NIST CSF 2.0), and hands-on experience with endpoint security, vulnerability management, and Windows/Active Directory administration.
Lead cybersecurity and compliance activities for classified DoD and Special Access Program Information Systems. Manage Risk Management Framework (RMF) authorization packages, security control assessments, and continuous monitoring.… Coordinate with Security Control Assessors, Authorizing Officials, and Program Security Officers to achieve and maintain authorization to operate (ATO). Evaluate vulnerabilities, security deficiencies, and risks while developing mitigation strategies in a fast-paced, regulated environment.
Network Engineer supporting Navy AT/FP systems, responsible for engineering, configuring, and sustaining Juniper, Aruba, Cisco, and specialized networking equipment across shore facilities and deployed environments. The role involves end-to-end system lifecycle support including staging, integration, testing, fielding, and sustainment; implementation of secure architectures compliant with RMF and STIGs; and hands-on site surveys and system installs with 50%+ travel.… Requires active Interim Secret clearance with ability to obtain fully adjudicated Secret; DoD 8570/8140 baseline certification (Security+ CE or higher); and 5+ years of experience with hands-on expertise in Juniper Junos OS, Aruba ArubaOS/wireless, and Cisco platforms.
This role supports maintenance, security, and configuration of Windows and Linux environments for a DoD tactical shipboard system (CANES). Responsibilities include maintaining system software and firmware, developing automation scripts for patch deployments, implementing DISA STIG compliance and security hardening, performing vulnerability remediation, and managing software version control and configuration management.… The candidate must hold an active Secret clearance, have 5–7 years of systems administration experience, and demonstrate proficiency in PowerShell, Bash, or Python scripting alongside hands-on Windows/Linux administration.
As a Network Engineer supporting Navy installations, you will engineer, configure, and sustain advanced networking equipment (Juniper, Aruba, Cisco) across NIWC Pacific and shore facilities. You'll manage the complete system lifecycle from staging through sustainment, implement secure network architectures aligned with RMF and STIGs, and support both lab and field deployments with 50%+ travel.… The role requires hands-on expertise with routing protocols, VLANs, VPNs, firewalls, and wireless deployments, along with DoD 8570 baseline certification and an active Secret clearance.
Mid-level full-stack software engineer responsible for developing, deploying, and troubleshooting distributed applications across application, OS, networking, and hardware layers. Must have 5+ years of professional experience with Python, modern front-end frameworks, RESTful APIs, Linux (RHEL preferred), containerization (Podman/OCI), Ansible automation, and Git.… Role emphasizes independent ownership of features from requirements through testing, strong debugging across system and software components, and integration with external systems and hardware interfaces.
Mid-level full-stack software engineer responsible for developing, deploying, and troubleshooting distributed applications across application software, operating systems, networking, virtualization, and hardware interfaces. The role requires 5+ years of professional software development experience with proficiency in Python, modern front-end frameworks, RESTful APIs, Linux administration, containerization (Podman/OCI), Git, and configuration automation (Ansible).… Strong emphasis on independent ownership of features from requirements through implementation and testing, with preferred experience in LLMs, generative AI, agentic workflows, and AI-tool integration for engineering tasks.
Network Engineer responsible for engineering, configuring, and sustaining mission-critical networked systems including Cisco, Aruba, Juniper, and Cambium equipment. The role spans the full system lifecycle—staging, integration, testing, fielding, and sustainment—with emphasis on secure network architectures aligned with RMF and STIGs, vulnerability remediation, and compliance validation.… You will deploy and troubleshoot networks in NIWC labs, shore facilities, and data centers, conduct site surveys and installations, and interface with government customers, program managers, and cybersecurity teams. Minimum 8 years of DoD or enterprise network engineering experience, hands-on expertise with Juniper (Junos OS, EX/QFX/SRX), Aruba (ArubaOS, Instant AP, Aruba Central), and Cisco (Catalyst, ISR, ASA, Firepower) required; DoD 8570/8140 certification (Security+, CISSP, CASP+, or higher) and relevant vendor certifications (JNCIA/CCNA or higher) mandatory.