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From the employer's careers site First seen 29 Oct 2026

Senior Information Systems Security Officer (ISSO)

Salary

$131,300 - $237,350 per year

Apply on Leidos

Description

We are seeking a Senior Information Systems Security Officer (ISSO) to play a vital role in securing and maintaining the integrity of our information systems through robust security measures and compliance frameworks.

The ISSO will support our customer site in Annapolis Junction, MD, focusing on the development, integration, deployment, and sustainment of cutting-edge large-scale collection systems.

Responsibilities Include:

  • Enhancing security posture by supporting information assurance initiatives and enforcing security policies, standards, and methodologies.
  • Overseeing security operations for information systems, managing daily security aspects, evaluating security solutions, and conducting vulnerability and risk assessments.
  • Managing configuration and system integrity by administering configuration management for security software, hardware, and firmware.
  • Developing and maintaining security documentation, including System Security Plans (SSPs), Risk Assessment Reports, and Certification & Accreditation (C&A) packages.
  • Ensuring compliance with security authorization activities following the Information System Certification and Accreditation Process (NISCAP) and DoD Risk Management Framework (RMF).
  • Providing technical expertise in security policies and operations, supporting the implementation and maintenance of security measures.
  • Driving continuous improvement by assessing existing security processes and implementing proactive solutions.

Basic Qualifications:

  • Bachelor of Science degree in Computer Science, Information Assurance, Information Security, or a related discipline, plus 12+ years of relevant experience.
  • 7+ years of ISSO experience supporting IC or DoD programs and contracts of similar scope, type, and complexity.
  • Experience with customer Info Security tool suite.
  • DoD 8570 compliance with IAM Level II or IAT Level III (CASP, CISSP, or Associate).
  • Must hold an active TS/SCI with Polygraph.

Benefits:

  • Competitive benefits including 4 or more weeks Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and more.

Pay Range: $131,300.00 - $237,350.00

Skills

Required

  • Information Systems Security
  • Security Engineering
  • Computer Network Operations
  • Mission Software
  • Analytical Methods and Modeling
  • Signals Intelligence
  • Cryptographic Key Management
  • DoD 8570
  • IAM Level II
  • IAT Level III
  • CASP
  • CISSP
Apply on Leidos