Junior Information Systems Security Officer (ISSO) MDX - SSFB/HSV

Posted 2 Days Ago
Be an Early Applicant
2 Locations
In-Office
90K-120K Annually
Junior
Security • Cybersecurity
The Role
Supports senior ISSOs with Risk Management Framework activities, eMASS administration, ATO and IATT renewals, POA&M maintenance, continuous monitoring, control validation testing, cybersecurity inspections, security-control documentation, and compliance reporting. The role requires on-site work five days per week supporting Missile Defense Agency systems and coordinating with government, ISSM, ISSO, administrative, and contract stakeholders.
Summary Generated by Built In

Position Title: Junior Information Systems Security Officer (ISSO)

 

Location: Schriever Space Force Base, Colorado Springs, CO or Redstone Arsenal, Huntsville, AL

 

Relocation Assistance: None available at this time

 

Remote/Telework: NO - Not available for this position

 

Clearance Type: DoW Secret

 

Shift: Day shift


Travel Required: Up to 10% of the time


 

Description of Duties:

The Junior Information Systems Security Officer (ISSO) is part of Amentum’s Missile Defense Division and directly supports the Missile Defense Agency (MDA). The candidate will provide support to senior ISSOs in the completion of the following tasks:


·       Provide cybersecurity engineering support in the development and maintenance of MDAs IC common use systems in RMF using MDAs Enterprise Mission Assurance Support Service (eMASS).

·       Review, update, perform quality updates and process ATO renewals, review & process IATT renewals, review Control & Package workflows using MDAs eMASS instance.

·       Maintains Plan of Action & Milestones (POA&Ms) to include AO Liens.

·       Produce and maintain weekly/monthly/quarterly reports as needed by the ISSM.

·       Support MDA Control Validation Testing (CVTs) through tasking and tracking of deliverables ensuing timely completion.

·       Support MDA in other Cybersecurity inspections (eg; MCTO/CCRI/CORA/ESM).

·       Document and review Security Controls and Control Correlation Identifier CCI) answers.

·       Interface with the Admin/ ISSM and other ISSOs to provide coordinated responses on IC common use systems.

·       Participate in technical discussions with Government and Contract customers.

·       Perform Continuous Monitoring (ConMon) activities on assigned systems.


·       The successful candidate will:

·       Have demonstrable experience with ATO packages to include Customer Responsibility Matrix’s for IaaS, PaaS and SaaS.

·       Have demonstrable knowledge of the Risk Management Framework (RMF).

·       Have demonstrable knowledge of the Enterprise Mission Assurance Support Service (eMASS) tool.

·       Have fundamental networking knowledge.



Resumes, in month and year format, must be submitted with application in order to be considered for the position.  The selected candidate may be assigned as an employee for one of our teammate companies.


 

Basic Requirements:

·       Must have 1, or more, years of directly related experience

·       Must have direct experience with eMASS

·       Must have a current DoD 8570.01 IAT Level II Certification (e.g. CompTIA Security+ CE Certification)

·       Must be able to work on site 5 days per week

·       Must have an active DoW Secret Security Clearance


 

Desired Requirements:

·       Have experience with BMC Helix

·       Have fundamental project management knowledge

·       Have experience with drafting and peer reviewing policy and procedure

·       Have experience with CND tools like ACAS, E-STIG, etc.



This position will be posted for a minimum of 3 days. If a candidate has not been selected at that time, it will continue to be posted until a suitable candidate is selected or the position is closed.

       

Compensation Details:

$90,000 – $120,000

       

The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.


Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

  • Health, dental, and vision insurance

  • Paid time off and holidays

  • Retirement benefits (including 401(k) matching)

  • Educational reimbursement

  • Parental leave

  • Employee stock purchase plan

  • Tax-saving options

  • Disability and life insurance

  • Pet insurance


Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

       

Original Posting:

10/23/2026 - 11/03/2026

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

       

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed,  marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.

Skills Required

  • At least 1 year of directly related experience
  • Direct experience with the eMASS tool
  • Current DoD 8570.01 IAT Level II certification, such as CompTIA Security+ CE
  • Ability to work on site five days per week
  • Active DoD Secret security clearance
  • Experience with ATO packages and Customer Responsibility Matrices for IaaS, PaaS, and SaaS
  • Knowledge of the Risk Management Framework
  • Fundamental networking knowledge
  • Experience with BMC Helix
  • Fundamental project management knowledge
  • Experience drafting and peer reviewing policies and procedures
  • Experience with CND tools such as ACAS and E-STIG

Amentum Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Amentum and has not been reviewed or approved by Amentum.

  • Healthcare Strength — Healthcare offerings are described as comprehensive, with medical, dental, and vision plans and multiple PPO/HSA options. Mental health support via an employee assistance program and other wellness resources is also included in the benefits mix.
  • Retirement Support — Retirement support is positioned as a meaningful part of total rewards through a 401(k) plan with employer matching. Profit-sharing contributions and immediate or near-term vesting in some cases further strengthen the retirement value proposition.
  • Leave & Time Off Breadth — Time-off benefits are presented as solid for the sector, including tiered PTO accrual by tenure and a set of paid holidays. Role-dependent flexible or remote work options and leave programs add to perceived work-life support.

Amentum Insights

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The Company
HQ: Chantilly, VA
18,261 Employees

What We Do

Amentum is a premier global technical and engineering services partner supporting critical programs of national significance across defense, security, intelligence, energy, and environment. We draw from a century-old heritage of operational excellence, mission focus, and successful execution underpinned by a strong culture of safety and ethics. Headquartered in Germantown, Md., we employ more than 20,000 people in 48 states and 28 foreign countries and territories. Visit us at amentum.com to explore how we deliver excellence for our customers’ most vital missions.

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