Agile Core Services (ACS) Cybersecurity Subject Matter Expert (SME)

Epsilon Systems Solutions, Inc; San Diego (CA); On-site; USD 135,000 - 185,000; Full time

Job summary

Epsilon Systems Solutions, Inc. in San Diego, CA, is seeking a Cyber Security Engineering SME with a minimum of five years of hands-on experience to strengthen cyber defenses for mission-critical systems.

The role requires DoD TS clearance with SCI access and a DoD IAT II certification or eligibility. You will plan and implement cybersecurity measures, assess vulnerabilities, ensure robust security controls, and respond to breaches.

Qualifications

• Bachelor's degree in cybersecurity, computer, electrical or electronics engineering, or mathematics with CS concentration.
• DoD IAT Level II Certification or eligibility required.
• 5 years' experience preparing and enforcing cybersecurity policy and A&A requirements.
• Strong interpersonal, phone etiquette and professional demeanor.
• Excellent oral and written communication skills.

Responsibilities

• Plan, implement, upgrade, or monitor cybersecurity measures to defend the network.
• Assess vulnerabilities and propose remediation or mitigation strategies.
• Ensure security controls protect digital files and infrastructure.
• Respond to computer security breaches and report as required.

Skills

Interpersonal skills

Oral and written communication

Team player

Customer service skills

Education

Bachelor's degree in Cybersecurity, Computer, Electrical, or Electronics Engineering, or Mathematics with a concentration in computer science or equivalent

DoD IAT Level II Certification

Job description

Agile Core Services (ACS) Cybersecurity Subject Matter Expert (SME)

Job ID: 2026-366

Date Posted: 2026-09-23T00:00:00

Location: San Diego, California

Minimum Experience: 5 years

Education: Bachelor's Degree

Epsilon C5I (www.epsilonsystems.com/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 security breaches to re-establish protections and make required reports.

Required Qualifications

• Bachelor’s degree in Cybersecurity, Computer, Electrical, or Electronics Engineering, or Mathematics with a concentration in computer science or equivalent.
• A minimum of DoD Information Assurance Technical (IAT) Level II Certification or eligibility is required for this position.
• Five (5) years of notable experience preparing, implementing, and ensuring compliance with cybersecurity policy, to include Assessment and Authorization requirements.
• Strong interpersonal skills, telephone etiquette, and professional demeanor.
• Excellent oral and written communication skills.
• Effective team player with highly proficient customer service skills.
• Flexible and able to work in a dynamic, team-oriented environment.
• Candidate must have an active DoD Top Secret Clearance with SCI access.
• Pursuant to the various government contractual requirements, all applicants must be U.S. Citizens.

Additional preferred qualifications

• Certifications such as CompTIA Security+ or CompTIA Linux+
• AWS Cloud Practitioner Certification or Equivalent

Pay Range

The pay range for this role is $135,000-185,000 annually. This is a reasonable estimate for this role. Individual salaries are determined by a variety of factors including, but not limited to: business considerations, local market conditions, and internal equity, as well as candidate qualifications, such as skills, education, and experience.

ADA Notations

• Regular communication (hearing/speaking).
• Noise conditions range from very quiet to very noisy.
• Prolonged use of computer (typing/keyboarding).
• Frequently required to sit for long periods of time, stand, walk, and may occasionally lift and move at least 25 pounds.
• Ability to travel by car, air or other means of transportation, if required.

Epsilon Systems Solutions, Inc. is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.

Equal employment opportunity, including veterans and individuals with disabilities.

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