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21 security professional jobs found

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Epsilon Systems security professional
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Epsilon Systems
Nov 04, 2026
Full time
Software Engineer III - TACKLE
$115,000 - $165,000 yearly
Epsilon Systems San Diego, CA
Epsilon C5I ( focused on software development and systems engineering for complex command, control, intelligence and combat systems, is seeking a Software Engineer III, with 4-8 years of experience, for work in San Diego, CA. Our engineering efforts provide the warfighter with common enterprise solutions to improve information sharing and combat effectiveness. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on! Summary: Our software team employs an Agile Scrum process to rapidly design, code, and integrate capabilities into a mature Platform as a Service (PaaS) solution. Work involves implementing new functionality, troubleshooting, and securing containers and container platforms. The ideal person would be security-focused and interested in solving practical software challenges, building modular web applications, and collaborating with a team to turn user needs into useful...
Epsilon Systems
Nov 04, 2026
Full time
Systems Engineer III – SIGINT San Diego
$112,000 - $165,000 yearly
Epsilon Systems San Diego, CA
Epsilon C5I, Inc. ( is seeking a Systems Engineer III with at least 4-8 years’ experience for work in San Diego, CA. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on! Summary: Develops system requirement specifications for mechanical, structural or electrical/electronic design by analyzing user's requirements, concept of operations documents and high-level system architectures. Duties and Responsibilities: Develops technical documentation. Develops system Architecture and system design documentation. Incorporates new plans, designs and systems into ongoing operations. Contributes to the technical direction for the development, engineering, interfacing, integration and testing of all components of complex hardware/software systems to include network analysis, functional allocation, systems requirements reviews, interface standards and system architectures....
Epsilon Systems
Nov 04, 2026
Full time
Cyber Security Engineer III - SIGINT - San Diego
$135,000 - $170,000 yearly
Epsilon Systems San Diego, CA
Epsilon C5I ( focused on software development and systems engineering for complex command, control, intelligence and combat systems, is seeking a Cyber Security Engineer III with 4-8 years of experience for work in San Diego, CA. Our engineering efforts provide the warfighter with tools to support critical support to operational missions to improve targeting capabilities. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on!  Summary:   The Cybersecurity Engineer shall be responsible for leading multiple efforts for system configurations maintaining authority to operate. The Cybersecurity Engineer conducts information system security engineering activities, such as capturing and tracking evolving information security requirements and ensuring the system maintains a strong security posture through purposeful design and configuration.  Duties and...
Epsilon Systems
Nov 04, 2026
Full time
Systems Engineer III - TACKLE
$115,000 - $165,000 yearly
Epsilon Systems San Diego, CA
Epsilon C5I ( focused on software development and systems engineering for complex command, control, intelligence and combat systems, is seeking a Systems Engineer III / DevSecOps Engineer, with 4-8 years of experience, for work in San Diego, CA. Our engineering efforts provide the warfighter with common enterprise solutions to improve information sharing and combat effectiveness. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on! Summary: Our software team employs an Agile Scrum process to rapidly design, code, and integrate capabilities into a mature Platform as a Service (PaaS) solution. Work involves troubleshooting, securing Linux operating systems and networks, and securing containers and container platforms. The ideal person would be interested in System Architecture and Security, while also interested in the nitty gritty of security and system access control. Duties and...
Epsilon Systems
Nov 04, 2026
Full time
Senior Systems Engineer I – SIGINT San Diego
$145,000 - $185,000 yearly
Epsilon Systems San Diego, CA
Epsilon C5I, Inc. ( is seeking a Senior Systems Engineer I with 6+ years of experience for work in San Diego, CA. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on! Summary: Develops system requirement specifications for mechanical, structural or electrical/electronic design by analyzing user's requirements, concept of operations documents and high-level system architectures. Duties and Responsibilities: Develops technical documentation. Develops system Architecture and system design documentation. Incorporates new plans, designs and systems into ongoing operations. Contributes to the technical direction for the development, engineering, interfacing, integration and testing of all components of complex hardware/software systems to include network analysis, functional allocation, systems requirements reviews, interface standards and system architectures. Contributes...
Epsilon Systems
Nov 04, 2026
Full time
Senior Cyber Security Engineer I - SIGINT - San Diego
$165,000 - $185,000 yearly
Epsilon Systems San Diego, CA
Epsilon C5I ( focused on software development and systems engineering for complex command, control, intelligence and combat systems, is seeking a Senior Cyber Security Engineer I with a minimum of 6 years’ experience for work in San Diego, CA. Our engineering efforts provide the warfighter with tools to support critical support to operational missions to improve targeting capabilities. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on!  Summary:   The Cybersecurity Engineer shall be responsible for leading multiple efforts for system configurations maintaining authority to operate. The Cybersecurity Engineer conducts information system security engineering activities, such as capturing and tracking evolving information security requirements and ensuring the system maintains a strong security posture through purposeful design and configuration.  Duties and...
Epsilon Systems
Nov 04, 2026
Full time
Senior Software Engineer II - TACKLE
$155,000 - $235,000 yearly
Epsilon Systems San Diego, CA
Epsilon C5I ( focused on software development and systems engineering for complex command, control, intelligence and combat systems, is seeking a Senior Software Engineer II, with 8+ years of experience, for work in San Diego, CA. Our engineering efforts provide the warfighter with common enterprise solutions to improve information sharing and combat effectiveness. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on! Summary: Our software team employs an Agile Scrum process to rapidly design, code, and integrate capabilities into a mature Platform as a Service (PaaS) solution. Work involves architecting and implementing new functionality, troubleshooting complex technical challenges. The ideal candidate will have a strong foundation in software engineering and system architecture, with the ability to independently design scalable, secure, and modular web applications while...
Epsilon Systems
Oct 21, 2026
Full time
Business Development Manager
$160,000 - $185,000 yearly
Epsilon Systems San Diego, CA
Epsilon Systems Solutions, Inc. is seeking a full-time Business Development Manager with experience and success in executing and growing DoD/USN/Maritime Industry-related service business.  Overarching responsibilities of this position include business development, strategic planning, capture management, pipeline management, assisting with proposal development, and advising the MS Business Unit SVP and employees on matters pertaining to growth and opportunity.  This position may be located in Portsmouth, VA, San Diego, CA, or Washington, D.C. area and will report to the Executive Vice President (EVP). Duties and Responsibilities: Strategy: Develop and execute strategies to grow Mission Services’ portfolio within the Department of Defense, U.S. Navy, and maritime industry. Assist in leading MS’s yearly strategic planning process to shape the future through development of long-range goals by establishing/expanding customer relationships, business...
Epsilon Systems
Oct 06, 2026
Full time
Maintenance Coordinator II
$26.26 - $32.53 hourly
Epsilon Systems San Diego, CA
Epsilon Systems Solutions, has a contingent job opportunity for a full-time Maintenance Coordinator II in San Diego, CA Summary: Responsible for management of the work-brokering process for the induction of repair, overhaul, corrective, and preventative maintenance for Naval vessels on the San Diego waterfront. Maintain accurate production work status for assigned customers, providing recommendations regarding assignment of work requests, based on the capability and capacity of supporting shops. Duties and Responsibilities: Provides direct support for the coordination of assigned maintenance and repair work for Naval vessels. Accesses, utilizes and updates computer database applications as required to track assigned Naval vessels maintenance and repair availabilities. Acts as liaison between ship’s Commanding Officer (CO), and shore maintenance personnel to ensure work schedules are maintained and coordinated. Carries out the responsibilities related to management and...
Epsilon Systems
Oct 06, 2026
Full time
Senior Project Manager
$100,000 - $160,000 yearly
Epsilon Systems San Diego, CA
Epsilon Systems Solutions, Inc. is seeking a full time  Project Manager in San Diego, CA. Job Summary:  Planning, organizing, staffing, coordinating, directing and controlling of projects under contract, developing customer relationships for continued business and to seek new opportunities for new business. Track progress towards meeting financial, scheduled, technical, and performance objectives for assigned projects. Support and lead business development objectives for new business and participate in the development of the Annual Operation Plan for existing and anticipated business. Duties and Responsibilities: Directs and regularly evaluates performance of assigned program tasks in terms of quality, cost control, and achievement of technical, schedule, performance and contractual objective to ensure work results meets customer requirements. Independently ensures all contract deliverables are of high quality and delivered on time. Serves as primary...
Epsilon Systems
Oct 06, 2026
Full time
Supply Technician II
$31.24 - $39.73 hourly
Epsilon Systems San Diego, CA
Epsilon Systems Solutions, Inc. is seeking a full time  Supply Technician II, in San Diego, CA. Job Summary:   Provides support in accomplishing material logistical support for Intermediate (I)-level brokered maintenance work in accordance with COMUSFLTFORCOMINST 4790.3, JOINT FLEET MAINTENANCE MANUAL (JFMM), ensuring adherence to production shops, supply technician standard operating procedures. Duties and Responsibilities: Provides material management support to the various Product Lines, and Shops, as assigned. Performs material management support in accordance with NAVSUP, OPNAV and DoD supply instructions, manuals, and publications; data system process guides; and prescribed GSS standard operating procedures. Accomplishes the following tasks during the performance of duties: research, tracking, receiving, issuing, storing and inventory of materials and repair parts. Performs inventory routine counts, validate locations, research and request adjustments...
Epsilon Systems
Oct 06, 2026
Full time
Junior Project Manager
$80,000 - $100,000 yearly
Epsilon Systems San Diego, CA
Epsilon Systems Solutions, Inc. is seeking a full time Junior  Project Manager in San Diego, CA. Job Summary:  Planning, organizing, staffing, coordinating, directing and controlling of projects under contract, developing customer relationships for continued business and to seek new opportunities for new business. Track progress towards meeting financial, scheduled, technical, and performance objectives for assigned projects. Support business development objectives for new business and participate in the development of the Annual Operation Plan for existing and anticipated business. Duties and Responsibilities: Directs and regularly evaluates performance of assigned program tasks in terms of quality, cost control, and achievement of technical, schedule, performance and contractual objective to ensure work results meets customer requirements. Ensures all contract deliverables are of high quality and delivered on time. Serves as primary point of contact...
Epsilon Systems
Oct 06, 2026
Full time
Senior Staff Engineer - Advanced Products West
$140,000 - $155,000 yearly
Epsilon Systems San Diego, CA
Epsilon Systems Solutions specializes in Systems and Software Engineering for intelligence/defense systems. We are seeking a highly skilled an experienced Staff Engineer to lead the development, production, and sustainment of flat panel display systems for military and defense applications including Navy shipboard combat and control systems, subsea platforms, and ground and tactical vehicle systems. The ideal candidate will possess a strong background in Electrical Engineering, Hardware Engineering, or Computer Engineering, with extensive experience in ruggedized electronics, display technologies, quality systems, ISO compliance, and production operations within both R&D and manufacturing environments. This role requires a senior-level engineering professional capable of bridging product development, laboratory testing, production support, and regulatory compliance in mission-critical defense programs. Responsibilities: Lead the design, development, integration, and...
Epsilon Systems
Oct 06, 2026
Full time
Senior Program Coordinator
$140,000 - $155,000 yearly
Epsilon Systems San Diego, CA
Epsilon C5I , focused on software development and systems engineering for intelligence and combat systems, is seeking an experienced and highly organized Senior Program Coordinator to support the successful execution of complex government and defense programs. This position works closely with Program Managers, technical leads, contracts, finance, security, recruiting, customers, subcontractors, and other stakeholders to coordinate day-to-day program activities and ensure contractual, financial, staffing, and administrative requirements remain on track. The ideal candidate is proactive, detail-oriented, comfortable working in a fast-paced environment, and able to manage multiple priorities with minimal supervision. This role is well suited for someone who understands government contracting and wants to grow toward a Program Manager position. Duties and Responsibilities: Independently analyze program schedules, milestones, contractual requirements, staffing,...
Epsilon Systems
Oct 06, 2026
Part time
On Call CMMC Assessor - San Diego, CA
$45.00 - $55.00 hourly
Epsilon Systems San Diego, CA
Epsilon Systems Solutions, Inc., a 100% Employee-owned Company, is currently seeking one part-time, unscheduled (on-call) Certified CMMC Assessor (CCA) in San Diego, CA. This position is performed remotely, with travel to client facilities. Summary: The Certified CMMC Assessor (CCA) serves as a qualified assessment team member on Cybersecurity Maturity Model Certification (CMMC) Level 2 certification assessments performed on behalf of the Company's Certified Third-Party Assessor Organization (C3PAO). This is a part-time, unscheduled position: work is assigned by engagement rather than on a fixed weekly schedule, and hours will fluctuate with assessment demand. The ideal candidate is an experienced cybersecurity assessor with deep working knowledge of NIST SP 800-171 Rev. 2, NIST SP 800-171A, 32 CFR Part 170, and the CMMC Assessment Process (CAP), together with the professional independence and judgment required to render defensible certification decisions. Duties and...
Epsilon Systems
Oct 06, 2026
Full time
Software Engineer II - TAF
$95,000 - $130,000 yearly
Epsilon Systems San Diego, CA
Epsilon C5I ( is focused on software development and systems engineering for intelligence and combat systems. We are hiring for a Software Engineer II with 2-6 years of experience to join our team in San Diego. Our software teams employ an Agile/Scrum process to rapidly design, code, and integrate capabilities into mature solutions. Our primary end users are focused on the safety and security of Navy and other DoD personnel. Summary: Work on a team developing cutting-edge technology to support DevOps testing environments for integrating Commercial and Government Off the Shelf (COTS/GOTS) technologies. You will help design and develop features and capabilities for a software test automation framework, implement and maintain automated test procedures, as well as build and maintain CI/CD infrastructure. Duties & Responsibilities: Work within an AGILE software development and integration environment Create and enhance automation framework using Python, Robot...
Epsilon Systems
Oct 06, 2026
Full time
Senior Software Engineer I - TAF
$130,000 - $170,000 yearly
Epsilon Systems San Diego, CA
Epsilon C5I ( is focused on software development and systems engineering for intelligence and combat systems. We are hiring for a Senior Software Engineer I with 6+ years of experience to join our team in San Diego. Our software teams employ an Agile/Scrum process to rapidly design, code, and integrate capabilities into mature solutions. Our primary end users are focused on the safety and security of Navy and other DoD personnel. Summary: Work on a team developing cutting-edge technology to support DevOps testing environments for integrating Commercial and Government Off the Shelf (COTS/GOTS) technologies. You will help design and develop features and capabilities for a software test automation framework, implement and maintain automated test procedures, as well as build and maintain CI/CD infrastructure. Duties & Responsibilities: Work within an AGILE software development and integration environment Create and enhance automation framework using Python, Robot...
Epsilon Systems
Oct 06, 2026
Full time
Agile Core Services (ACS) Cybersecurity Subject Matter Expert (SME)
$135,000 - $185,000 yearly
Epsilon Systems San Diego, CA
Epsilon C5I ( focused on software development and systems engineering for complex command, control, intelligence and combat systems, is seeking a Cyber Security Engineering SME with a minimum of 5 years’ experience for work in San Diego, CA. Our engineering efforts provide the warfighter with tools to support critical support to operational missions to improve targeting capabilities. If you have a passion for excellence in engineering and enjoy working on challenging projects in a fast-paced, team-oriented environment – read on!  Duties and Responsibilities:  Plan, implement, upgrade, and/or monitor cybersecurity measures to improve cyber defense and maintain a cyber-resilient network.  Assess cybersecurity vulnerabilities for risks and propose and implement remediation actions or risk mitigation strategies.  Ensure appropriate security controls are in place that will safeguard digital files and electronic infrastructure.  Respond to computer...
Epsilon Systems
Oct 06, 2026
Full time
Senior Software Engineer II - TAF
$170,000 - $225,000 yearly
Epsilon Systems San Diego, CA
Epsilon C5I ( is focused on software development and systems engineering for intelligence and combat systems. We are hiring for a Senior Software Engineer II with 8+ years of experience to join our team in San Diego. Our software teams employ an Agile/Scrum process to rapidly design, code, and integrate capabilities into mature solutions. Our primary end users are focused on the safety and security of Navy and other DoD personnel. Summary: Work on a team developing cutting-edge technology to support DevOps testing environments for integrating Commercial and Government Off the Shelf (COTS/GOTS) technologies. You will help design and develop features and capabilities for a software test automation framework, implement and maintain automated test procedures, as well as build and maintain CI/CD infrastructure. Duties & Responsibilities: Work within an AGILE software development and integration environment Create and enhance automation framework using Python, Robot...
Epsilon Systems
Oct 06, 2026
Full time
Diesel Mechanic
$23.31 - $26.07 hourly
Epsilon Systems San Diego, CA
Epsilon Systems Solutions is seeking a full-time Diesel Mechanic in San Diego, CA. Job Summary:  Under minimal supervision, provide semi-professional technical support for working in material condition assessment, fault diagnostics, corrective maintenance, corrective recommendations, testing, and process improvement. Work pertains to providing support to a San Diego-based customer for the repair of Naval ship diesel engines. Duties and Responsibilities: Reviews or prepares Process Control Procedures (PCPs) for diesel engine work. Briefs ships’ crew and managers on the status of assigned tasks and/or repairs. Provides on-the-job training to ship crews when conducting maintenance and/or critical repairs. Use technical knowledge and experience to troubleshoot faults and casualties on various diesel engines and associated auxiliary equipment and systems. Assist in identifying causes of equipment/system failure at the component level. Provides technical...
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