acas jobs in San Diego

The Cyber Security Analyst develops and maintains assessment documentation, performs ongoing compliance assessments using tools like ACAS, SCAP, and Trellix, and conducts security audits and Site Based Security Assessments (SBSAs) of NCS Family of Systems. The role requires 5–8 years of cybersecurity experience, current DoD 8140-compliant IAT II certification (Security+ with appropriate CE/OS), and expertise in Risk Management Framework (RMF) v3/v5, System Security Plans (SSPs), POA&Ms, STIG remediation, and eMASS.…See more Responsibilities include patching verification, configuration and change management compliance, incident reporting, continuous monitoring, and potential appointment as Information System Security Officer (ISSO) within 6 months.

System Administrator II responsible for provisioning, configuring, and sustaining AWS services (EC2, S3, VPC, Event Bridge) and on-premises infrastructure. The role requires developing Infrastructure as Code using Ansible, maintaining system patches per STIG compliance, scanning and remediating vulnerabilities with ACAS, and administrating Windows and Linux workstations and servers.…See more The candidate will support CI/CD workflows, monitor resources, and maintain comprehensive technical documentation while ensuring system architecture components integrate seamlessly.

Senior Cyber Systems Engineer responsible for developing and maintaining RMF artifacts (SSPs, SARs, SAPs, POA&Ms), coordinating with Navy Authorizing Officials and Security Control Assessors, and managing cybersecurity authorization packages for ATO/IATT/IATO activities. The role involves vulnerability remediation, STIG compliance, access control policy development, patch management, and server/network infrastructure oversight.…See more Requires mastery of the Risk Management Framework, CI/CD security pipelines, container hardening (Docker/Kubernetes), infrastructure-as-code tools (Terraform, Ansible), and automated security assessment tools (ACAS/Nessus). Serves as Information Systems Security Manager (ISSM) for product ATOs and coordinates with government agencies to ensure DoD and Navy cyber security requirements are met.

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).

Serve as an independent, third-party cybersecurity assessor and RMF (Risk Management Framework) team lead for Navy systems under the NSWC Corona CCAM contract. Execute comprehensive security assessments of IT, PIT, and OT systems against DoD and NAVSEA standards; validate NIST 800-53 control implementations; analyze vulnerability data and STIG compliance; generate Security Assessment Reports and Risk Assessment Reports; and provide mentorship to ISSMs and ISSOs.…See more Requires NQV Level III certification, active TS/SCI clearance, seven years of cybersecurity experience with four years in RMF assessments, and DoD 8570 IAM Level II/III baseline certification.

Lead cybersecurity operations for Naval Surface Warfare Center Corona enclaves and Platform IT systems, owning the complete Risk Management Framework (RMF) Authorization to Operate process under DoD Instruction 8510.01. Oversee ISSOs and System Administrators, develop and maintain System Security Plans, Security Assessment Reports, and Risk Assessment Reports, and manage eMASS records for continuous compliance monitoring.…See more Direct incident response, enforce configuration management policies through Change Control Boards, and conduct STIG/ACAS/SCAP compliance reviews. Requires TS/SCI clearance, Master's in Computer Science/Cybersecurity or equivalent, 8+ years cybersecurity experience, and current DoD 8140/8570 Level III certification (CISSP, CISM, CASP+, or equivalent).

Network Engineer III will design, implement, and maintain enterprise network infrastructure for a DoD environment, configuring and troubleshooting routers, switches, firewalls, and security devices. The role requires hands-on expertise in TCP/IP, OSPF, VLANs, IPsec, and network segmentation, with responsibility for vulnerability remediation, STIG compliance, and RMF requirements.…See more The engineer will coordinate cross-functional teams to resolve connectivity and interoperability issues, maintain network documentation and baselines, and support system integrations and upgrades in classified or highly regulated DoD networks. A Secret-level DoD security clearance is required, along with 5–7 years of progressive network engineering experience and Security+ certification.

Information System Security Officer III responsible for securing assigned networks, enclaves, and platform IT systems through vulnerability assessments, STIG compliance verification, and continuous monitoring. The role requires coordinating with engineers and developers to embed security throughout the system development lifecycle, managing RMF documentation and POA&M entries, conducting daily audit log and SIEM alert reviews, and supporting incident response and cyber inspections.…See more Must possess TS/SCI clearance, a bachelor's degree in IT/cybersecurity or equivalent experience, six years of hands-on security implementation and vulnerability analysis, and current DoD 8140/8570 IAM Level II certification.

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).

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.…See more 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.

As a Cybersecurity Engineer and Risk Analyst, you will identify vulnerabilities, assess security threats, and implement infrastructure and cybersecurity controls to protect military systems. You'll conduct risk and vulnerability assessments across networks, systems, and applications, work with Navy Risk Management Framework (RMF) and Assessment & Authorization (A&A) processes, and develop security solutions using tools like ACAS, STIGs, and eMASS.…See more The role requires 4+ years of DoD/government IT experience, hands-on cybersecurity compliance testing, and the ability to communicate complex security concepts to technical and non-technical audiences.

As a Cybersecurity Systems Engineer, you will develop and implement security solutions to protect military infrastructure, performing risk and vulnerability assessments across networks, systems, and applications. You'll work with Navy Risk Management Framework (RMF) processes, manage security controls and compliance testing using tools like eMASS and ACAS, and identify cyber threats using vulnerability scanning and big-data analytics.…See more The role requires 3+ years of DoD/government IT experience, expertise in RMF/A&A activities, and hands-on knowledge of Windows, Linux, cloud platforms, network infrastructure (routers, switches, firewalls, NIPR/SIPR), and security compliance tools. You'll communicate security complexities to diverse audiences and deliver client solutions from inception through completion.

As a Cybersecurity Engineer and Risk Analyst, you will develop and implement security solutions to protect military infrastructure, performing vulnerability assessments, risk analysis, and compliance testing across networks, systems, and applications. You'll work with Navy Risk Management Framework (RMF) and Assessment & Authorization (A&A) processes, leverage tools like ACAS and eMASS to identify threats and security gaps, and communicate security findings to both technical and non-technical audiences.…See more The role requires hands-on experience with security controls, policy implementation, and infrastructure protection using industry-standard scanning and compliance tools.

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.

The Network Engineer IV delivers advanced afloat C4ISR network engineering, integration, and sustainment for the Navy's carrier training tactical system within the CANES architecture. The role maintains, configures, and troubleshoots ruggedized network hardware and software baselines while providing hands-on technical support to shipboard ITs and NIWC Pacific during Fleet training events, readiness exercises, and deployment workups.…See more Responsibilities include system updates, patching, baseline management, virtualization support, enclave routing, cybersecurity compliance (STIG application, HBSS/ACAS remediation, Zero Trust hardening), and functional/performance testing with documentation of findings. The engineer must hold or obtain a Secret clearance, possess CCNA/CCNP and DoD 8570 IAT Level II (Security+), and have 3–5 years of network engineering experience with preferred expertise in Ansible, Python, Bash, PowerShell, and DevSecOps automation.

Design, deploy, and maintain virtualized Linux training environments for Navy simulation systems, migrating workloads from tactical hardware platforms to KVM-based virtual infrastructure. Develop Python automation scripts and Ansible playbooks for system administration, testing, and deployment; configure and troubleshoot Open vSwitch networking, hardware passthrough (PCIe, VFIO, SR-IOV), and RHEL 7/8 environments.…See more Support performance optimization, cybersecurity compliance (STIG, RMF), and integration testing across hardware, OS, networking, and application layers.

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.…See more 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.

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.

System Administrator II supporting Naval IT operations with focus on front-office workstation and user account management. Responsibilities include troubleshooting Windows endpoints, managing Active Directory and user access, maintaining compliance with Navy security standards (SAAR-N, CMAR), and providing technical support across NIPR/SIPR networks.…See more The role requires hands-on experience with Navy-specific tools (NET, NEST, NIS), helpdesk ticketing workflows, endpoint security patching, and collaboration with cybersecurity and network teams.

This role performs continuous security monitoring, compliance assessments, and authorization documentation for Department of Defense information systems. The analyst will use tools like ACAS, SCAP, and eMASS to execute Risk Management Framework processes, conduct security audits, manage Plans of Action and Milestones (POA&Ms), and coordinate STIG remediation with system engineers and administrators.…See more The position requires 5–8 years of cybersecurity experience, current DoD 8140-compliant IAT II certification (Security+), and deep knowledge of RMF, system security plans, and automated compliance scanning. The analyst must be able to work independently, manage competing priorities, and be appointed Information System Security Officer (ISSO) within six months.

This role supports cybersecurity and compliance efforts across the Risk Management Framework (RMF) process for DoD programs. Responsibilities include developing and maintaining system security documentation, Plans of Action and Milestones (POA&Ms), assessing security controls, conducting vulnerability scanning and audits, and ensuring continuous monitoring of systems compliance.…See more The position requires IAM Level I certification (DoD 8570.1M), 4+ years of information security or cybersecurity experience, and hands-on proficiency with compliance and vulnerability scanning tools such as Nessus, SCAP, ACAS, and SCC on Windows, Linux, and network devices.

The Network Engineer IV delivers advanced tactical network engineering, integration, and sustainment for the Navy's carrier training system (CANES architecture), ensuring reliable data transport, system interoperability, and secure performance. The role maintains, configures, and troubleshoots shipboard and afloat network hardware and software, supports Fleet training readiness exercises, and provides hands-on technical leadership across NIWC Pacific and shipboard IT teams.…See more Responsibilities include system updates, patching, virtualization management, cybersecurity compliance (RMF, STIG, HBSS/ACAS), and functional/performance testing with occasional underway periods. The engineer must hold or obtain an active Secret clearance (TS/SCI preferred), possess DoD 8570 IAT Level II and CCNA/CCNP certifications, and demonstrate expertise in Linux, Windows Server, Cisco IOS/NX-OS, Juniper JUNOS, and infrastructure automation.

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.

The Cybersecurity Engineer will coordinate cybersecurity activities including preparation and maintenance of Risk Management Framework (RMF) artifacts, risk and vulnerability assessments across network/system/application domains, and day-to-day cyber operations. The role requires performing compliance testing, implementing security controls and policies, working with tools like eMASS and ACAS, and developing security documentation for DoD/government systems up to TS/SCI classification.…See more The candidate must work independently, identify risks and devise mitigation solutions, and communicate findings to both technical and non-technical stakeholders. A bachelor's degree and DoD 8140 qualification (equivalent to former DoD 8570 IAT II) are required, along with 3+ years in cybersecurity, T&E, or Authorization & Accreditation roles.