Information Systems Security Engineer (ISSE) - Sr
CGI Technologies and Solutions, Inc., huntsville, al, United States
**Information Systems Security Engineer (ISSE) - Sr**
**Category:** Cyber Security
**Main location:** United States, District of Columbia, Washington
**Alternate Location(s):** United States, Alabama, Huntsville
United States, West Virginia, Clarksburg
**Position ID:** J
**Employment Type:** Full Time
U.S. - CGI Federal roles - What we do matters ( playing this video you consent to Google/YouTube processing your data and using cookies -Learn more (xweb.asp?clid=21001&page=cookiespolicy#integrationofyoutube) .
**Position Description:**
US CITIZENSHIP AND ACTIVE TOP SECRET CLEARANCE IS REQUIRED
CGI Federal is seeking a Senior Information Systems Security Engineer (ISSE) to support a major federal initiative. The Senior ISSE provides advanced cybersecurity engineering expertise, guiding secure system architecture, integrating NIST security controls, and ensuring secure design across complex hybrid cloud and on‑premises systems. This role serves as a technical lead, advising architects, developers, ISSOs, and federal stakeholders on secure system engineering practices, secure configuration management, and RMF engineering requirements.
The Senior ISSE plays a critical role in system modernization, secure architecture reviews, and the engineering decisions that influence a system's security posture across its full lifecycle.
**Your future duties and responsibilities:**
- Lead the development, engineering, and review of secure system architectures across cloud, hybrid, and on‑prem environments.
- Design, implement, and validate NIST 800‑53 security controls and system security features.
- Lead threat modeling, risk assessments, and advanced system security engineering reviews.
- Oversee secure configuration management, including STIG‑based hardening, SCAP assessments, and enforcement of security baselines.
- Evaluate and recommend security technologies, tools, and design patterns to support mission needs and modernization efforts.
- Provide engineering leadership during RMF activities, including boundary definition, control inheritance, system architecture documentation, and ATO engineering support.
- Lead or support security functional testing, integration testing, and validation of implemented controls.
- Produce and review engineering documentation such as system design docs, interface control documents, data flow diagrams, and architecture diagrams.
- Guide cross‑functional development, engineering, DevSecOps, and operations teams on secure integration practices.
- Mentor Mid‑Level and Junior ISSEs; act as an escalation point for complex engineering and architecture challenges.
**Required qualifications to be successful in this role:**
- Bachelor's degree in Cybersecurity, Information Systems, Computer Engineering, Software Engineering, or related technical field (Master's preferred).
- Minimum of 7+ years of experience in cybersecurity engineering, systems engineering, or secure IT architecture, with demonstrable senior‑level responsibility.
- Active Top Secret (TS) clearance (SCI preferred if applicable).
- Advanced experience with:
- Secure system and network architecture design
- NIST 800‑53 control engineering & NIST 800‑160 security engineering principles
- Secure configuration management and system hardening
- Cloud security engineering (AWS, Azure, GovCloud)
- Proven ability to lead engineering efforts across large, complex programs.
- Strong communication skills and proven ability to produce high‑quality engineering documentation.
Preferred Certifications (Senior‑Level Appropriate)
Strongly Preferred:
- CISSP
- CASP+ CE
- CCSP
- GSEC
Additional Highly Valuable:
- CISM
- CEH
- GCIH
- GCED
- AWS/Azure security architect certifications
- DoD 8140/8570 IASAE‑II/III certifications
Technical Familiarity
- Advanced use of STIG Viewer, SCAP Compliance Checker, and system hardening automation tools
- Vulnerability assessment tools such as ACAS/Nessus, Tenable, or equivalent
- Cloud security services (IAM, network security groups, key management, encryption, logging, etc.)
- Secure API design, data flow analysis, and integration of complex system interfaces
- DevSecOps pipelines and CI/CD security integration (Git, Jenkins, Azure DevOps, GitLab CI)
- Scripting or automation using Python, Bash, or PowerShell
- Ability to evaluate and guide complex architecture decisions across distributed systems
Due to the nature of this government contract, US Citizenship is required.
\#CGIFederalJob
\#LI-DD1
**Skills:**
+ Information Security Mgmt
**What you can expect from us:**
**Together, as owners, let's turn meaningful insights into action.**
Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you'll reach your full potential because...
You are invited to be an owner from day 1 as we work together to bring our Dream to life. That's why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company's strategy and direction.
Your work creates value. You'll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.
You'll shape your career by joining a company built to grow and last. You'll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.
Come join our team-one of the largest IT and business consulting services firms in the world.
Qualified applicants will receive consideration for employment without regard to their race, ethnicity, ancestry, color, sex, religion, creed, age, national origin, citizenship status, disability, pregnancy, medical condition, military and veteran status, marital status, sexual orientation or perceived sexual orientation, gender, gender identity, and gender expression, familial status or responsibilities, reproductive health decisions, political affiliation, genetic information, height, weight, or any other legally protected status or characteristics to the extent required by applicable federal, state, and/or local laws where we do business.
CGI provides reasonable accommodations to qualified individuals with disabilities. If you need an accommodation to apply for a job in the U.S., please email the CGI U.S. Employment Compliance mailbox at . You will need to reference the Position ID of the position in which you are interested. Your message will be routed to the appropriate recruiter who will assist you. **Please note, this email address is only to be used for those individuals who need an accommodation to apply for a job. Emails for any other reason or those that do not include a Position ID will not be returned.**
We make it easy to translate military experience and skills! Clickhere ( to be directed to our site that is dedicated to veterans and transitioning service members.
All CGI offers of employment in the U.S. are contingent upon the ability to successfully complete a background investigation. Background investigation components can vary dependent upon specific assignment and/or level of US government security clearance held. Dependent upon role and/or federal government security clearance requirements, and in accordance with applicable laws, some background investigations may include a credit check. CGI will consider for employment qualified applicants with arrests and conviction records in accordance with all local regulations and ordinances.
CGI will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with CGI's legal duty to furnish information.
**Category:** Cyber Security
**Main location:** United States, District of Columbia, Washington
**Alternate Location(s):** United States, Alabama, Huntsville
United States, West Virginia, Clarksburg
**Position ID:** J
**Employment Type:** Full Time
U.S. - CGI Federal roles - What we do matters ( playing this video you consent to Google/YouTube processing your data and using cookies -Learn more (xweb.asp?clid=21001&page=cookiespolicy#integrationofyoutube) .
**Position Description:**
US CITIZENSHIP AND ACTIVE TOP SECRET CLEARANCE IS REQUIRED
CGI Federal is seeking a Senior Information Systems Security Engineer (ISSE) to support a major federal initiative. The Senior ISSE provides advanced cybersecurity engineering expertise, guiding secure system architecture, integrating NIST security controls, and ensuring secure design across complex hybrid cloud and on‑premises systems. This role serves as a technical lead, advising architects, developers, ISSOs, and federal stakeholders on secure system engineering practices, secure configuration management, and RMF engineering requirements.
The Senior ISSE plays a critical role in system modernization, secure architecture reviews, and the engineering decisions that influence a system's security posture across its full lifecycle.
**Your future duties and responsibilities:**
- Lead the development, engineering, and review of secure system architectures across cloud, hybrid, and on‑prem environments.
- Design, implement, and validate NIST 800‑53 security controls and system security features.
- Lead threat modeling, risk assessments, and advanced system security engineering reviews.
- Oversee secure configuration management, including STIG‑based hardening, SCAP assessments, and enforcement of security baselines.
- Evaluate and recommend security technologies, tools, and design patterns to support mission needs and modernization efforts.
- Provide engineering leadership during RMF activities, including boundary definition, control inheritance, system architecture documentation, and ATO engineering support.
- Lead or support security functional testing, integration testing, and validation of implemented controls.
- Produce and review engineering documentation such as system design docs, interface control documents, data flow diagrams, and architecture diagrams.
- Guide cross‑functional development, engineering, DevSecOps, and operations teams on secure integration practices.
- Mentor Mid‑Level and Junior ISSEs; act as an escalation point for complex engineering and architecture challenges.
**Required qualifications to be successful in this role:**
- Bachelor's degree in Cybersecurity, Information Systems, Computer Engineering, Software Engineering, or related technical field (Master's preferred).
- Minimum of 7+ years of experience in cybersecurity engineering, systems engineering, or secure IT architecture, with demonstrable senior‑level responsibility.
- Active Top Secret (TS) clearance (SCI preferred if applicable).
- Advanced experience with:
- Secure system and network architecture design
- NIST 800‑53 control engineering & NIST 800‑160 security engineering principles
- Secure configuration management and system hardening
- Cloud security engineering (AWS, Azure, GovCloud)
- Proven ability to lead engineering efforts across large, complex programs.
- Strong communication skills and proven ability to produce high‑quality engineering documentation.
Preferred Certifications (Senior‑Level Appropriate)
Strongly Preferred:
- CISSP
- CASP+ CE
- CCSP
- GSEC
Additional Highly Valuable:
- CISM
- CEH
- GCIH
- GCED
- AWS/Azure security architect certifications
- DoD 8140/8570 IASAE‑II/III certifications
Technical Familiarity
- Advanced use of STIG Viewer, SCAP Compliance Checker, and system hardening automation tools
- Vulnerability assessment tools such as ACAS/Nessus, Tenable, or equivalent
- Cloud security services (IAM, network security groups, key management, encryption, logging, etc.)
- Secure API design, data flow analysis, and integration of complex system interfaces
- DevSecOps pipelines and CI/CD security integration (Git, Jenkins, Azure DevOps, GitLab CI)
- Scripting or automation using Python, Bash, or PowerShell
- Ability to evaluate and guide complex architecture decisions across distributed systems
Due to the nature of this government contract, US Citizenship is required.
\#CGIFederalJob
\#LI-DD1
**Skills:**
+ Information Security Mgmt
**What you can expect from us:**
**Together, as owners, let's turn meaningful insights into action.**
Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you'll reach your full potential because...
You are invited to be an owner from day 1 as we work together to bring our Dream to life. That's why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company's strategy and direction.
Your work creates value. You'll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.
You'll shape your career by joining a company built to grow and last. You'll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.
Come join our team-one of the largest IT and business consulting services firms in the world.
Qualified applicants will receive consideration for employment without regard to their race, ethnicity, ancestry, color, sex, religion, creed, age, national origin, citizenship status, disability, pregnancy, medical condition, military and veteran status, marital status, sexual orientation or perceived sexual orientation, gender, gender identity, and gender expression, familial status or responsibilities, reproductive health decisions, political affiliation, genetic information, height, weight, or any other legally protected status or characteristics to the extent required by applicable federal, state, and/or local laws where we do business.
CGI provides reasonable accommodations to qualified individuals with disabilities. If you need an accommodation to apply for a job in the U.S., please email the CGI U.S. Employment Compliance mailbox at . You will need to reference the Position ID of the position in which you are interested. Your message will be routed to the appropriate recruiter who will assist you. **Please note, this email address is only to be used for those individuals who need an accommodation to apply for a job. Emails for any other reason or those that do not include a Position ID will not be returned.**
We make it easy to translate military experience and skills! Clickhere ( to be directed to our site that is dedicated to veterans and transitioning service members.
All CGI offers of employment in the U.S. are contingent upon the ability to successfully complete a background investigation. Background investigation components can vary dependent upon specific assignment and/or level of US government security clearance held. Dependent upon role and/or federal government security clearance requirements, and in accordance with applicable laws, some background investigations may include a credit check. CGI will consider for employment qualified applicants with arrests and conviction records in accordance with all local regulations and ordinances.
CGI will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with CGI's legal duty to furnish information.