gsec jobs in San Diego

This Senior Systems Administrator role supports U.S. National Security by maintaining critical enterprise infrastructure, including Windows servers, domain controllers, cloud resources, and VMware environments.…See more The position requires hands-on administration of secure networks, troubleshooting of cryptographic encryptors (TACLANE/KG-175), performing vulnerability remediation with ACAS/Nessus, and executing rapid incident response for site outages. The role demands an active Top Secret clearance with SCI eligibility, 2+ years of direct systems/network administration experience, and 4+ years managing enterprise Windows infrastructure (AD, DHCP, DNS, GPO, WSUS).

Cybersecurity Engineer I supporting Assessment & Authorization accreditation efforts under the NIWC PAC contract. Responsibilities include maintaining cybersecurity monitoring operations, conducting vulnerability assessments, performing incident triage, developing A&A documentation (SSP, SAP, SAR), managing POA&Ms, and adhering to Risk Management Framework and eMASS scheduled tasking cycles including STIG checks and ATO/ATC processes.…See more Requires a Bachelor's degree in Cybersecurity, IT, or related field, 1+ years of relevant experience, and IAT II certification (CySA+, Security+, CCNA Security, GICSP, GSEC, or SSCP).

Lead information security engineer responsible for designing and implementing comprehensive security architectures across ICW Group's IT and business technology infrastructure. Will conduct risk assessments, penetration tests, and security compliance reviews; partner with systems engineering and project management teams to ensure secure design throughout the development lifecycle; and lead remediation strategies for identified vulnerabilities.…See more Requires 10+ years of security engineering experience, AWS cloud security expertise (3–5 years preferred), and hands-on proficiency with IDS/IPS, firewalls, SIEM, forensics tools, and endpoint security solutions.

Information Security Engineer III will lead security architecture reviews and threat modeling for data, analytics, AI, and cloud initiatives at an insurance company. The role involves designing and implementing security controls for AWS data platforms and AI/ML workloads, providing oversight of LLM usage and emerging AI threats, and mentoring engineering teams on secure development practices.…See more You will partner with Engineering, Cloud, Data, and Operations teams to embed security into system design, manage compliance with NIST, NYDFS, PCI DSS, and CPRA/CCPA standards, and evaluate third-party vendors and security tools. The position requires 8+ years of security engineering experience, 3-5 years in AWS cloud security, and expertise in threat modeling, risk assessment, and incident management.

The Cybersecurity Engineer II will perform system hardening, vulnerability assessments, and remediation on Windows and Linux systems in accordance with DoD standards. Responsibilities include STIG implementation, vulnerability scanning using ACAS, patch management, compliance support, and documentation.…See more The role requires 5 years of hands-on experience with system hardening, vulnerability assessment tools, and both Linux and Windows remediation, plus a relevant Bachelor's degree and one of several security certifications (CCNA, CySA+, GICSP, GSEC, Security+, or SSCP).

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.…See more 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).

This role designs, implements, and optimizes enterprise security systems including firewalls, VPNs, and segmentation controls while developing automation scripts to streamline deployments and enhance threat detection. The architect will leverage network observability and security telemetry to validate policies, identify vulnerabilities, manage patch compliance, and produce metrics for operational visibility.…See more Responsibilities include mentoring security teams, advising on security best practices aligned with business needs, and collaborating on process improvements and incident response workflows. Required: 5+ years progressive cybersecurity experience (3+ with master's degree); preferred: hands-on NGFW expertise, intermediate certifications (GSEC, CEH, CySA+), and scripting proficiency in Python, PowerShell, Bash, or Java.

The Security Control Assessor – Representative will perform risk-based reviews and evaluations of system security plans (SSPs) for classified systems under the Risk Management Framework (RMF), making authorization recommendations. The role requires expert knowledge of NIST 800-53 security controls, DoD/DCSA policies, and the NISP eMASS platform to assess compliance artifacts, document findings, and provide defensible security authorization decisions.…See more The candidate must hold an IAT Level II certification (Security+, CCNA Security, CSA+, GICSP, GSEC, or SSCP) and an active Secret clearance to evaluate classified system packages against government technical standards.

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.…See more 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.

DevOps Systems Engineer supporting a U.S. Air Force cloud migration program, responsible for designing and maintaining secure, scalable on-premises and cloud infrastructure.…See more The role focuses on building and managing CI/CD pipelines, automating provisioning and configuration for legacy applications, implementing DevSecOps controls, and administering Linux/Windows servers. Requires 5+ years of system engineering and DevSecOps experience, active Secret clearance (Top Secret preferred), IAT II certification, and hands-on expertise with Kubernetes, Ansible, Jenkins, AWS, and containerization technologies.

Systems Administrator II supporting a U.S. Government RDT&E network.…See more Responsible for Windows system administration, troubleshooting hardware and software issues, applying security patches and STIGs to desktops, and managing Microsoft and Adobe products. Requires Secret clearance and IAT Level II certification (CySA+, Security+, CCNA Security, GICSP, GSEC, or SSCP); minimum 1+ year Windows OS experience.

DevSecOps Engineer supporting a U.S. Air Force cloud migration program.…See more Responsibilities include designing secure on-premises infrastructure, building and managing CI/CD pipelines, automating provisioning and monitoring, implementing security controls, and troubleshooting infrastructure incidents. Requires active TS/SCI clearance, 5–8+ years of DevSecOps/software engineering experience, IAT II certification, hands-on expertise with Kubernetes, Docker, GitLab, AWS, Linux/Unix, and monitoring tools (ELK Stack, Nagios).

Associate Pathways Computer Systems Analyst supporting classified government contracts on information system lifecycle activities. The role involves resolving technical problems across hardware, software, networks, and telecommunications systems for internal customers; managing ticketing systems (ServiceNow, JIRA); and supporting multi-user computer environments under security policies.…See more Requires a Bachelor's or Master's degree, basic Windows Server OS knowledge, and ability to obtain a U.S. Government Systems Administrator certification (Cloud+, GICSP, GSEC, Security+, or SSCP) within 6 months.

Associate-level cybersecurity analyst supporting classified government information system lifecycle activities through security audits, continuous monitoring, and Assessment & Authorization (A&A) work. Responsibilities include conducting system and network security assessments, analyzing compliance with security controls and policies, supporting Security Test & Evaluation (ST&E) activities, and preparing Risk Management Framework documentation.…See more Requires a Bachelor's or Master's degree, current Secret clearance (or CE Program enrollment), and ability to obtain an IT Program Auditor certification (SecurityX/CASP+, GGRC, GSEC, GSNA, Sec+, or SSCP) within six months.

Develop, secure, and maintain software applications for the U.S. Navy across classified and unclassified environments.…See more Design and build web applications and REST/SOAP/GraphQL APIs, implement secure coding practices per DoD directives and DISA STIGs, and support CI/CD DevSecOps pipelines. Requires proficiency in Python and JavaScript, Agile/Scrum methodologies, test-driven development, and containerized deployment; active Secret clearance and DoD 8570 IAT Level II certification mandatory.

Senior Software Engineer supporting a DoD IT management contract in San Diego. Develop and maintain secure applications using Python and JavaScript, build REST/SOAP/GraphQL APIs, and work within containerized environments (Docker, Kubernetes, OpenShift).…See more Must implement DoD-compliant secure coding practices, DISA STIGs, and DevSecOps/CI/CD pipelines in an Agile/Scrum environment with a required active Secret clearance and IAT Level II certification.

Principal Cyber Architect supporting DoD systems engineering teams on Assessment and Authorization (A&A) activities, cyber design and implementation, and DevSecOps integration. Responsibilities include conducting vulnerability assessments, analyzing static/dynamic code scans, developing system security plans, and ensuring compliance with RMF controls and DISA STIGs.…See more Requires Bachelor's in Cyber/Systems/Software/Electrical Engineering plus 6+ years of experience and one DoDM 8140 compliant certification (CCSP, CISSP-ISSEP/ISSAP, CSSLP, or Cloud+). Experience with MBSE, Cameo, Zero Trust Architecture, threat modeling, and offensive security analysis preferred.

This mid-level Systems Engineer role focuses on deploying, managing, and maintaining Red Hat OpenShift clusters in on-premises government environments. Core responsibilities include Kubernetes and OpenShift administration, Linux system management, cluster monitoring and troubleshooting, security hardening (including STIG implementation), and collaboration with development teams.…See more The role requires an active Secret clearance, one DoD 8570 IAT Level II certification (Security+, CySA+, CCNA Security, GICSP, GSEC, or SSCP), and 1+ years of OpenShift experience plus 3–5 years of Linux administration background.

Software Engineer I supporting U.S. Navy IT Management Services, developing secure, scalable applications in Python and JavaScript across classified and unclassified environments.…See more Responsibilities include designing REST/SOAP/GraphQL APIs, managing database architectures, implementing DevSecOps CI/CD pipelines with Docker/Kubernetes, and embedding DoD/DISA STIG cybersecurity controls throughout the development lifecycle. Requires active Secret clearance, Bachelor's degree, 4+ years software engineering experience, IAT II certification (CySA+, Security+, CCNA-Security, GSEC, or SSCP), and hands-on expertise in Agile/Scrum, TDD, object-oriented design, and DoD-compliant secure coding practices.

This onsite role administers and secures Windows 11 and Red Hat Enterprise Linux (RHEL) systems supporting NIWC Pacific's mission-critical RDT&E networks and secure enclaves. The administrator will develop PowerShell and Bash automation scripts, implement Ansible playbooks, harden systems to DISA STIGs and DoD cybersecurity standards, manage vulnerability remediation and patching, and support infrastructure design and modernization.…See more The position requires 3+ years each of Windows and RHEL administration experience, strong scripting and troubleshooting skills, and an active Secret clearance with a DoD 8570/8140 IAT Level II certification (Security+, GSEC, SCNP, or SSCP).

Software Engineer I developing, enhancing, and maintaining mission-critical DoD applications using Python, JavaScript, and modern web services (REST APIs, SOAP, GraphQL). The role emphasizes secure coding practices, DevSecOps, CI/CD, and Test-Driven Development within an Agile/Scrum environment, with close collaboration across engineering, cybersecurity, and government stakeholders.…See more Requires database schema design, application architecture work, troubleshooting, code reviews, and deployment activities. Bachelor's degree in Computer Science or related field required; active Secret clearance and DoD 8570/8140 IAT Level II certification (Security+, CySA+, SSCP, GSEC, GICSP, or CCNA Security) mandatory.

Software Engineer I will develop and maintain secure, scalable software applications using Python and JavaScript in DoD classified and unclassified environments, implementing DevSecOps practices, CI/CD pipelines, and DISA STIG compliance. The role requires leading secure software development with embedded cybersecurity controls, designing modern web interfaces and APIs (REST, SOAP, GraphQL), and managing database architectures.…See more Candidates must hold an active Secret clearance, a Bachelor's degree with 4+ years of IT/software engineering experience, and IAT II certification (CySA+, Security+, CCNA-Security, GSEC, or SSCP). The position emphasizes Agile/Scrum methodologies, containerization (Docker, Kubernetes), object-oriented design, and cross-functional collaboration within a DoD environment.

Design, assess, and troubleshoot enterprise network security environments using Cisco security technologies, with expertise in Firepower Threat Defense (FTD), Firepower Management Center (FMC), and Identity Services Engine (ISE). Implement network access control, TrustSec segmentation, threat prevention controls, and secure deployments across on-premises, campus, data center, and cloud environments.…See more Develop client-facing security architectures integrating Cisco platforms with SIEM tools and automation solutions, delivering technical assessments, target-state architectures, and implementation roadmaps. Lead projects and workstreams while managing multiple priorities in a fast-paced consulting environment.

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.

Systems Engineer II to deploy, manage, and monitor Red Hat OpenShift clusters in on-premises U.S. Government environments.…See more Responsibilities include cluster health monitoring, troubleshooting application and node errors, configuring security policies and user access controls, and performing updates and backups. Requires 1+ years of OpenShift experience, 3–5 years of Linux administration with in-depth Kubernetes knowledge, and a bachelor's degree in a quantitative field or equivalent experience.