Information Systems Security Engineer (ISSE)
Company: Leidos
Location: Temple Hills
Posted on: July 10, 2025
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Job Description:
Description We are actively seeking Information Systems Security
Engineers (ISSE) with a minimum of five (5) years’ experience in
the role of an ISSE. This opportunity is supporting the customer’s
Accreditation and Authorization (A&A) projects at the Group
organizational level and is therefore supporting across various
levels within the customer organization. CLEARANCE REQUIREMENT :
Must be US Citizen or US Person (Green Card Holder) with the
ability to obtain a level 4 Public Trust Clearance. This role is
primarily remote, with occasional onsite requirements. Candidates
must be local to the DC Metro area and available to attend
in-person meetings in Washington, DC as needed. Possess
multi-tasking skills, be able to handle multiple A&A systems /
projects simultaneously, as well as being a good communicator /
facilitator. Comfortable communicating at all levels from developer
/ engineer to senior contractor / customer staff. Knowledge of
complex network environments involving shared networks and multiple
security enclaves Possess the ability to bridge the technical
implementation (i.e. engineering talk) into commonly understood
security verbiage. Often this is a skillset and is not an actual
language, frequent translation or a basic understand needs to be
conveyed by the ISSE when speaking with others or when
communicating in writing in order to ensure it’s easy to understand
at all levels. Document the various security control
implementations as well as gather the artifacts that support the
Risk Management Framework (RMF) and ICD 503 Security Accreditation
for the various Assessment and Authorization (A&A) efforts
Document and obtain a general understanding of the architecture
being developed or that was developed for each project in order to
write the Systems Security Plans (SSP) / CONOPS Gather the
information by working with various systems owners, project
managers, and engineering team members in order to write various
additional A&A related documents such as Contingency Plan (CP),
General User Guide (GUG), Privileged User Guide (PUG), Standard
Operating Procedures (SOP’s), etc. Document the Plans of Actions
and Milestones (POA&Ms) implementation responses or
mitigations, as well as provide all required artifacts (i.e.
evidence gathering from the system owners, PMs, and engineering
teams) Coordinating with various contractor and customer personnel
to obtain the A&A content, as well as working with various
customer security organizations to navigate the customer’s A&A
process to achieve Authority to Develop (ATD), Interim Authority to
Operation (IATT), and Authority to Operate (ATO) for each of the
primary and secondary assigned systems Provide appropriate support
for ATO'ed systems that are in continuous monitoring Education,
Experience & Skills 8 years’ experience and a Bachelor’s Degree
minimum required Previous ISSE experience directly supporting the
customer SaaS applications along with Public, private and/or hybrid
Cloud experience is a must (AWS, Microsoft Azure, etc.)
Certifications: At least 1 is required CISSP or GSLC certifications
The Mission The Digital Modernization Sector is focused on
delivering performance-based IT services and repeatable solutions
to include applying cloud-factory and aaS (as a Service)
capabilities and integrating commercial products to provide a
comprehensive digital engineering approach to IT transformation.
Our team is solving the world’s toughest security challenges for
customers with “can’t fail” missions. To explore and learn more,
click here ! Come join our rapidly growing team and enjoy these
benefits: Paid Time Off (PTO) accrued based on Leidos policy, up to
3 weeks a year. Eleven (11) paid holidays per year. Access to
benefits on day one including medical and dental insurance, 401K,
Life, AD&D, Voluntary Disability plans. Ongoing training to
support your success. Discounted Leidos stock purchase and other
Employee Discounts. Original Posting: June 10, 2025 For U.S.
Positions: While subject to change based on business needs, Leidos
reasonably anticipates that this job requisition will remain open
for at least 3 days with an anticipated close date of no earlier
than 3 days after the original posting date as listed above. Pay
Range: Pay Range $104,650.00 - $189,175.00 The Leidos pay range for
this job level is a general guideline only and not a guarantee of
compensation or salary. Additional factors considered in extending
an offer include (but are not limited to) responsibilities of the
job, education, experience, knowledge, skills, and abilities, as
well as internal equity, alignment with market data, applicable
bargaining agreement (if any), or other law. Remote
Keywords: Leidos, Washington DC , Information Systems Security Engineer (ISSE), Engineering , Temple Hills, DC