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Senior System Engineer
Job in
Belleville, St. Clair County, Illinois, 62226, USA
Listed on 2026-02-08
Listing for:
Marathon TS
Full Time
position Listed on 2026-02-08
Job specializations:
-
IT/Tech
Systems Engineer, Cybersecurity -
Engineering
Systems Engineer, Cybersecurity
Job Description & How to Apply Below
What Success Looks Like
Success is measured by well-architected, secure systems supported by disciplined engineering artifacts, defensible technical reviews, and traceable requirements. Risks are identified early and mitigated effectively. Government stakeholders rely on the Systems Engineer IV for clear technical judgment, credible recommendations, and steady leadership across engineering, security, and governance forums
Key Responsibilities Systems Engineering & Technical Oversight- Perform systems engineering analysis for complex DoD information systems, including evaluation, verification, and validation of existing and emerging solutions.
- Develop, review, and maintain system architectures and engineering artifacts using DoDAF or other government-approved frameworks.
- Conduct technical reviews of contractor deliverables and provide recommendations to improve system performance, reliability, and security.
- Identify technical risks across the system lifecycle and develop practical mitigation strategies.
- Participate in engineering milestone reviews, including SRR, PDR, CDR, TRR, and ORR.
- Support RMF and system authorization activities, including development, review, and sustainment of accreditation documentation.
- Provide recommendations on cybersecurity best practices to support authorization, audits, assessments, and long-term sustainment.
- Coordinate with security engineers, developers, DISA, and government stakeholders to resolve security and compliance issues.
- Review and support Agile requirements, ensuring traceability and alignment with system architecture and security constraints.
- Facilitate or support Agile governance forums, including Change Control Boards (CCBs), ST/ARTs, Requirements Review Boards (RRBs), and Technical Interchange Meetings (TIMs).
- Provide analytical and administrative support to requirements, engineering, and technical review boards.
- Bachelor's degree (or equivalent) in Systems Engineering, Computer Science, Engineering, or a related discipline.
- Minimum of nine (9) years of relevant systems engineering experience supporting complex IT or DoD systems.
- Systems engineering and architecture development
- RMF, cybersecurity accreditation, and compliance activities
- Agile environments and requirements management
- Technical reviews and engineering governance forums
- Strong written and verbal communication skills, including experience briefing senior government stakeholders.
- Ability to work independently and lead technical discussions across multidisciplinary teams.
- Experience working across technical, functional, financial, and administrative teams.
- Ability to translate complex technical concepts for non-technical stakeholders
- Experience supporting or implementing ERP solutions delivered via a SaaS model in a DoD or Federal environment.
- Knowledge of ERP-driven business process reengineering and configuration-based solution design.
- Experience with system integration, data migration, and master data management in ERP environments.
- Familiarity with RMF, cloud security, and FedRAMP considerations for SaaS solutions.
- Experience supporting Agile or SAFe governance for COTS/SaaS implementations.
- Experience supporting USTRANSCOM, Combatant Command, or other DoD PMO environments.
- In-depth knowledge of Dev Sec Ops , cloud technologies, and secure system design.
- Experience supporting Agile Release Trains (ARTs) or SAFe-based environments.
- Familiarity with system testing, audits, and sustainment activities.
Position Requirements
10+ Years
work experience
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