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Information System Security Engineer (ISSE) - Mid

RealmOne
Chantilly, VA Full Time
POSTED ON 6/1/2026
AVAILABLE BEFORE 7/1/2026
Job Brief

Cybersecurity

Job Description

RealmOne was built on the principle that people matter first and foremost. We believe in providing a strong work/life balance by investing in our employees and encouraging professional and personal growth. We do this by offering exceptional benefits, flexible schedules, and the tools necessary to achieve success through paid training, mentoring, and the opportunity to work alongside top-notch industry professionals. We are looking for skilled individuals to provide technical expertise in support of a government client.

Position is contingent upon contract award.

We are seeking an experienced Information System Security Engineer (ISSE) to join our technology-based program supporting a key government customer. As an ISSE, you will play a critical role in managing the operational security posture and ensuring information system security policies, standards, and procedures are established and followed.

The ISSE - Mid shall possess the following capabilities:

  • Provide support for a program, organization, system, or enclave's information assurance program.
  • Provide management support for proposing, coordinating, implementing, and enforcing information systems, security policies, standards, and methodologies.
  • Manage operational security posture for an information system or program to ensure information systems security policies, standards, and procedures are established and followed.
  • Provide management of security aspects of the Information System and perform day-to-day security operations of the system.
  • Manage the performance of vulnerability/risk assessment analysis to support security authorization.
  • Provide management support to configuration management (CM) for information system security software, hardware, and firmware.
  • Provide configuration management (CM) for information systems security software, hardware, and firmware.
  • Manage changes to systems and assess the security impact of those changes.
  • Manage the process and preparation of documentation reviews to include System Security Plans (SSPs), Risk Assessment Reports, Certification and Accreditation (C&A) packages, and System Requirements Traceability Matrices (SRTMs).
  • Support security authorization activities in compliance with CSS Risk Management Framework (RMF) process and DoD Information Assurance Certification and Accreditation Process (DIACAP).

Qualifications:

  • Bachelor's degree in Computer Science, Information Assurance, Information Security System Engineering, or related discipline from an accredited college or university is required. In lieu of a bachelor's degree, four (4) additional years of ISSE experience may be substituted.
  • Ten (10) years' experience as an ISSE on programs and contracts of similar scope, type, and complexity to include recent experience within the last Four (4) years with Cybersecurity principles and technology, including access/control, authorization, identification and authentication, PKI, network and enterprise security architecture is required.
  • DoD 8570 compliance with IASAE II is required.

Position requires active Security Clearance with appropriate Polygraph

Pay Range: Competitive

The RealmOne pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Our approach to crafting offers considers various factors to establish an equitable and competitive compensation package. These considerations include, but are not limited to, the extent and intricacy of the role's responsibilities, the candidate's educational background, their work experience, and the specific competencies crucial for success in the role.

RealmOne Benefits:

  • Healthcare Coverage Insurance: Medical: Three (3) rich healthcare options through CareFirst with 100% or majority company-paid premiums. Tax-advantaged health savings account available with generous employer contribution. Dental Vision: 100% employer-paid for employees and family with buy-up option available.
  • Retirement Savings: 401K - 10% TOTAL CONTRIBUTION - 5% safe harbor - 5% annual profit share. Immediate vested, no match required!
  • Paid Time Off More: 4 weeks starting PTO - 11 federal holidays 2 floating holidays - Paid hours for company-required training.
  • Career Growth Development: Access to FREE 24/7 learning via Udemy - Opportunities to participate in tech councils, industry initiatives, etc. - $7,500 annual Educational & Professional Development Assistance.
  • MORE BENEFITS...FOR EVERY LIFESTYLE! - Paid parental leave - Adoption assistance - Annual swag drops - Flexible work schedules - -Generous referral bonus program - Employee appreciation family-friendly corporate events ...and much more.

ABOUT US

  • RealmOne is a mid-sized science and technology company dedicated to solving our customers' toughest mission challenges.
  • Headquartered in Columbia, MD., RealmOne supplies advanced cybersecurity, data science and software engineering services and products to customers in the Government and commercial sectors.
  • RealmOne delivers encompassing mission assurance and critical systems support to government customers across various U.S. locations to include Colorado, Georgia, Hawaii, Texas, Utah, and Virginia.
  • RealmOne has earned numerous awards, including being named a Top Workplace by the Baltimore Sun. With more than 30 active contracts, 12 of which are prime, RealmOne stands as a premier innovator supporting the Government and Department of Defense, with team members located nationwide.

Disclaimer: Benefits packages offered by RealmOne are subject to variation and may differ based on work location, clearance level, and other eligibility criteria. Specific eligibility, availability, and scope of benefits are not guaranteed, may differ from those generally described, and remain subject to modification at the sole discretion of the company.


All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.


 

Salary : $7,500

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