system-hardening jobs in San Diego

As a Network Engineer supporting Navy AT/FP systems at NIWC Pacific, you will engineer, configure, and sustain Juniper, Aruba, and Cisco networking equipment across CONUS and OCONUS installations. You'll design and implement secure network architectures compliant with RMF and STIGs, perform system hardening and vulnerability remediation, and support end-to-end lifecycle activities from staging through fielding.…See more The role requires hands-on expertise in switching, routing, wireless, VPNs, and firewalls, with 50%+ travel to shore facilities and data centers. You must hold an active interim Secret clearance with ability to obtain a fully adjudicated Secret clearance, plus DoD 8570/8140 baseline certification (Security+ CE or higher, and Juniper JNCIA or Cisco CCNA or higher).

Design and lead hybrid edge-to-cloud architectures integrating tactical edge, on-premises, and cloud environments across AWS GovCloud, Azure Government, and containerized platforms. Architect solutions compliant with DoD cloud standards (Impact Levels 4–6+), Zero Trust, RMF, and multi-classification security requirements.…See more Implement DevSecOps pipelines with CI/CD, Infrastructure as Code, automated security scanning, and secure deployment practices. Provide technical leadership to engineers, developers, cybersecurity personnel, and government stakeholders through architecture reviews, risk identification, and executive briefings.

Design, configure, and sustain mission-critical networked systems using Cisco, Aruba, Juniper, and specialized hardware. Support end-to-end lifecycle activities including staging, integration, testing, fielding, and sustainment of DoD networks.…See more Implement secure architectures aligned with RMF and STIGs, perform system hardening and vulnerability remediation, and troubleshoot networks in labs, shore facilities, and deployed environments. Requires 8+ years of hands-on network engineering experience, DoD Secret clearance, and a DoD 8570/8140 baseline certification (Security+ CE minimum).

Senior Software Engineer responsible for architecting and executing deployment of an AI-enabled product suite to government-authorized cloud environments (IL6, JWICS). The role spans full-stack development (React/Node/Python), DevSecOps hardening, security controls implementation (NIST SP 800-53, OSCAL), and compliance documentation.…See more You'll mentor engineers on secure design, translate between government compliance requirements and engineering execution, and serve as the technical subject matter expert guiding cross-functional teams through a complex, regulated deployment.

ManTech seeks a Systems Administrator to support national security infrastructure in San Diego, maintaining Windows servers, domain controllers, cloud resources, and VMware environments. The role combines network and systems administration, including configuring cryptographic network encryptors (TACLANE), troubleshooting site outages, performing vulnerability remediation with ACAS/Nessus, and managing user accounts.…See more Requires a Bachelor's degree with 4+ years of IT experience (or equivalent), DoD 8570 IAT Level II compliance, and 2+ years as a Network or Systems Administrator with enterprise Windows infrastructure expertise. Travel up to 25% and an active Top Secret/SCI clearance with polygraph eligibility are required.

ManTech seeks a Systems Administrator to maintain critical national security enterprise infrastructure in San Diego, working a 0100–0900 morning shift with on-call support. Responsibilities include administering Windows servers, domain controllers, cloud resources, and VMware environments; configuring and troubleshooting TACLANE cryptographic network encryptors; performing patch management, vulnerability remediation (ACAS/Nessus), and system hardening; and managing user accounts and ticketing incidents.…See more Requires a bachelor's degree with 4+ years of IT experience (or equivalent substitution), DoD 8570 IAT Level II compliance (Security+ CE or equivalent), 4+ years of enterprise Windows infrastructure design/deployment, and hands-on TACLANE encryptor experience. Up to 25% travel (CONUS and OCONUS) is required.

Network engineer responsible for designing, configuring, and sustaining mission-critical networked systems for DoD/government customers. Will engineer Cisco, Aruba, Juniper, and other switching/routing/firewall platforms; support full system lifecycle from staging through fielding and sustainment; implement secure architectures aligned with RMF and STIGs; and conduct site surveys, deployments, and troubleshooting in labs, shore facilities, and deployed environments.…See more Requires minimum 8 years of hands-on network engineering experience, DoD Secret clearance, relevant vendor certifications (CCNA/JNCIA or higher), and DoD 8570/8140 baseline security certification (Security+ CE minimum).

Network engineer providing advanced engineering, integration, and sustainment support for Navy AT/FP systems across global installations. You will engineer, configure, and sustain Juniper, Aruba, Cisco, and Cambium networking equipment; support end-to-end system lifecycle from staging through fielding; implement secure architectures aligned with RMF and STIGs; and conduct site surveys, installations, and operational verification during 50%+ travel.…See more Requires active interim Secret clearance with ability to obtain fully adjudicated clearance, Bachelor's degree with 5 years' experience (or HS/GED with 8 years), DoD 8570/8140 baseline certification, and hands-on experience with Juniper Junos, Aruba, and Cisco platforms.

Software Engineer II supporting Navy METOC systems, responsible for maintaining and developing fielded software systems, firmware, and engineering development models. Duties include software maintenance, patch deployment automation, security compliance (DISA STIGs, C&A processes), vulnerability management, and system hardening.…See more Requires 3+ years software engineering experience, Navy tactical systems familiarity (preferably CANES), Windows/Linux administration, scripting (PowerShell, Bash, Python), and DoD 8570 IAT Level II or Security+ CE certification.

Senior systems administrator responsible for managing installation, configuration, updates, monitoring, and troubleshooting of enterprise and tactical IT infrastructure. Lead security hardening efforts aligned with CMMC and DISA STIG standards, vulnerability remediation, backup/recovery procedures, and network infrastructure including routers, firewalls, and VPNs.…See more Provide technical leadership to teams of administrators and coordinate across cybersecurity, engineering, and program stakeholders. Support tactical data pipelines, containerized workloads, and edge server environments.

Design, engineer, configure, and sustain mission-critical networked systems for DoD customers, including Cisco (Catalyst, ISR, ASA/Firepower), Aruba (switching and wireless), Juniper (EX, QFX, SRX), and Cambium microwave solutions. Support end-to-end lifecycle from staging and integration through testing, fielding, and sustainment in NIWC labs, shore facilities, and data centers.…See more Implement secure network architectures aligned with Risk Management Framework (RMF) and Security Technical Implementation Guides (STIGs), perform system hardening and vulnerability remediation, and conduct site surveys and installations during frequent travel. Requires minimum 8 years of DoD or enterprise network engineering experience, DoD 8570/8140 baseline certification (Security+ minimum), and vendor certifications (JNCIA/CCNA or higher).

As a Network Engineer supporting Naval installations, you will design, configure, and sustain advanced networking infrastructure (Juniper, Aruba, Cisco) across shore facilities and data centers worldwide. You will engineer secure network architectures aligned with DoD Risk Management Framework and STIGs, perform system hardening and vulnerability remediation, and support end-to-end lifecycle operations from staging through fielding.…See more The role requires 8 years of hands-on network engineering experience, DoD Secret clearance, and DoD 8570 baseline certifications (Security+ CE minimum), with 50%+ travel to support CONUS and OCONUS operations.

This role supports cybersecurity engineering and infrastructure security for enterprise, cloud, and classified environments. The engineer will manage vulnerability assessment, system hardening, patching, secure configuration, and DevSecOps pipeline integration across Linux and Windows Server platforms.…See more Responsibilities include compliance support (RMF, ATO, NIST SP 800-53, DISA STIGs), CI/CD security automation, containerized environment hardening, and infrastructure-as-code implementation. Strong technical depth in cloud platforms (AWS/AWS GovCloud), container orchestration, security tooling, and the ability to communicate complex technical and compliance issues to engineering and mission stakeholders are required.

Senior systems administrator responsible for providing technical guidance and coordination across infrastructure, security, and engineering teams in a mission-focused environment. Will mentor administrators and end users, document technical solutions, and lead issue resolution across Windows/Linux systems, virtualization, networking, and cloud platforms.…See more Requires extensive experience in enterprise/government IT infrastructure, system hardening, cybersecurity compliance (CMMC, DISA STIG), and strong communication with technical and non-technical stakeholders.

Cloud Engineer II supporting mission-critical cloud infrastructure for defense environments. Responsible for cloud deployment, configuration, troubleshooting, monitoring, and modernization across enterprise, hybrid, and containerized hosting environments.…See more Must demonstrate expertise in infrastructure automation, scripting, and Infrastructure as Code; familiarity with cloud networking, identity, compute, storage, security, and monitoring; and understanding of cybersecurity, access control, and compliance. Will collaborate with engineers, cybersecurity personnel, operators, program managers, and government stakeholders.

This Systems Administrator II role supports containerized and cloud-based infrastructure for a defense-focused technology company. The administrator will maintain system documentation, configuration records, software inventories, and license tracking while supporting both Windows and Linux environments, networking infrastructure, and cybersecurity hardening.…See more Required experience includes Linux command-line proficiency, system configuration and troubleshooting, networking protocols (TCP/IP, DNS, DHCP, VPNs, firewalls), and cybersecurity practices. Preferred qualifications include containerization technologies (Docker, Kubernetes), edge computing hardware, cloud platforms (AWS, Azure), shell scripting, and tactical systems support.

As a Network Engineer supporting Naval Information Warfare Center Pacific, you will engineer, configure, and sustain enterprise-grade networked systems (Juniper, Aruba, Cisco, Cambium) across Navy installations worldwide. You will manage the full system lifecycle from staging and integration through fielding and sustainment, implement secure network architectures aligned with RMF and STIGs, and deploy networks in labs, shore facilities, and field environments.…See more The role requires hands-on expertise in Layer 2/3 technologies, routing protocols, VPNs, wireless deployments, and vulnerability remediation, with 50%+ travel to support CONUS and OCONUS operations.

The Windows & Linux System Administrator will administer and maintain Windows 11 and Red Hat Enterprise Linux (RHEL) systems in secure DoD environments, develop PowerShell and Bash automation scripts, and support infrastructure engineering initiatives. The role requires ensuring compliance with DISA security requirements through STIG implementation, patch management, and system hardening, while utilizing Ansible for automation across secure networks.…See more Candidates must have 3+ years each administering Windows and RHEL systems, experience with the IAVM process, and hold an active Secret clearance with IAT Level II certification.

Network Engineer responsible for designing, configuring, and sustaining mission-critical networked systems including Cisco, Aruba, Juniper, Cambium, and Antaira equipment. The role spans end-to-end lifecycle activities: staging, integration, testing, fielding, and sustainment of networks in labs, shore facilities, and data centers.…See more Requires hands-on expertise in Layer 2/3 technologies, routing protocols (OSPF, BGP), VPNs, firewalls, and wireless deployments, with mandatory compliance to RMF and STIGs. Must hold or obtain a DoD Secret clearance and meet DoD 8570/8140 baseline certification (Security+, CISSP, CASP+, or higher) plus vendor certifications (JNCIA/CCNA or higher).

As a Network Engineer supporting Naval Information Warfare Center Pacific, you will engineer, configure, and sustain advanced networking equipment (Juniper, Aruba, Cisco) across Navy installations worldwide. You will design secure network architectures, implement RMF and STIG compliance, manage VLANs/routing/VPNs, support wireless deployments, and conduct site surveys and integration testing with 50%+ travel.…See more You must hold an active DoD Secret clearance, meet DoD 8570/8140 certification requirements (Security+ minimum), and have 8+ years of DoD or enterprise network engineering experience with hands-on expertise in Juniper, Aruba, and Cisco platforms.

As a Network Engineer supporting Naval Information Warfare Center Pacific, you will engineer, configure, and sustain advanced networking equipment (Juniper, Aruba, Cisco, Antaira, Cambium) across Navy installations worldwide. You will support the full system lifecycle—staging, integration, testing, fielding, and sustainment—of networked systems protecting mission-critical assets, implementing secure architectures aligned with RMF and STIGs, and conducting site surveys and operational verification testing during frequent travel (50%+).…See more The role requires hands-on expertise in Junos OS, ArubaOS, Cisco platforms, routing protocols (OSPF, BGP), VLANs, VPNs, firewalls, and vulnerability remediation, with a DoD 8570/8140 baseline certification and an active interim Secret clearance.

As a Network Engineer IV supporting Naval Information Warfare Center Pacific, you will engineer, configure, and sustain advanced Cisco, Aruba, Juniper, and other enterprise networking equipment for Navy Public Safety Systems. You will support the full system lifecycle—staging, integration, testing, fielding, and sustainment—across NIWC labs, shore facilities, and deployed environments.…See more Responsibilities include implementing secure network architectures aligned with Risk Management Framework (RMF) and Security Technical Implementation Guides (STIGs), performing system hardening and vulnerability remediation, and maintaining configuration baselines and technical documentation. You must hold or obtain a DoD Secret security clearance, possess DoD 8570/8140 baseline certification (Security+ CE minimum), and have 8+ years of hands-on network engineering experience with Juniper, Aruba, and Cisco platforms.

Network Engineer supporting the Global Sustainment Contract at Naval Information Warfare Center Pacific, responsible for engineering, configuring, and sustaining advanced networking equipment (Juniper, Aruba, Cisco, Antaira, Cambium) across Navy installations worldwide. The role encompasses end-to-end system lifecycle support including staging, integration, testing, fielding, and sustainment; deployment and troubleshooting in labs, shore facilities, and data centers; and implementation of secure network architectures aligned with Risk Management Framework (RMF) and Security Technical Implementation Guides (STIGs).…See more Requires 8 years of network engineering experience, active DoD Secret clearance, and DoD 8570/8140 baseline certification (Security+ CE minimum or higher such as CISSP or CASP+), with hands-on expertise in Juniper (Junos OS, EX/QFX/SRX), Aruba (ArubaOS, Instant AP, Aruba Central), Cisco (Catalyst, ISR, ASA, Firepower), and core networking technologies including Layer 2, routing protocols (Static, OSPF, BGP), VPNs (IPSec), ACLs, and firewalls.

As a Linux Systems Automation Engineer, you will engineer and deploy critical infrastructure across Red Hat Enterprise Linux (RHEL) platforms for a government client, supporting national defense missions. You will design enterprise-scale monitoring and automation solutions, develop Python scripts and Ansible configurations for automated provisioning and compliance, and manage virtualized environments (KVM, QEMU, Proxmox) and containerized workloads.…See more Key responsibilities include maintaining system security through STIG implementation and hardening, performing vulnerability scanning and remediation, and authoring technical documentation. You must have 5+ years of RHEL administration experience, 3+ years of Python automation expertise, security compliance knowledge, and a Secret clearance.

Network Engineer supporting Navy AT/FP systems worldwide, responsible for engineering, configuring, and sustaining Juniper, Aruba, and Cisco networking equipment across shore facilities and data centers. Role involves end-to-end system lifecycle management including staging, integration, testing, and fielding of networked systems; implementing secure architectures aligned with RMF and STIGs; and conducting vulnerability remediation and compliance validation.…See more Requires active interim Secret clearance with ability to obtain fully adjudicated Secret clearance, Bachelor's degree plus 5 years experience (or HS diploma plus 8 years), DoD 8570/8140 baseline certification (Security+ CE or higher), and hands-on expertise with Juniper Junos OS, Aruba ArubaOS, and Cisco platforms including routing protocols, VLANs, VPNs, and ACLs.