Enterprise Architect - IT

Role

GM Defense is driving the future of military mobility by leveraging the best‑in‑class capabilities of General Motors for unmatched innovation, proven performance and breakthrough life‑cycle economics. We deliver reliable, affordable, and innovative products across a full spectrum of capabilities – integrated vehicles, power and propulsion, autonomy, mobility, and security.

GM Defense IT is seeking a Staff Enterprise Architect to define and lead the target‑state architecture, standards, and transition approach for a scalable, compliant IT ecosystem. This role will shape the future GM Defense architecture model and the roadmap for reducing operational friction across multiple environments. The position is an expert individual contributor with broad business acumen and wide latitude in decisions and actions.

Responsibilities include solving complex cross‑functional problems, influencing key technical and operating‑model decisions, establishing architecture direction and standards across domains, and leading large initiatives that require integration across internal and external stakeholders.

• Lead architect for GM Defense initiatives, including secure environment capabilities, enterprise applications, integrations, and supporting platforms required to meet business and regulatory needs.
• Define and communicate the high‑level architecture structures, architecture principles, standards, guardrails, and decision frameworks that guide GM Defense technology direction and support current and future business needs.
• Partner with business stakeholders, cybersecurity, export compliance, information governance, infrastructure, manufacturing, engineering, SAP, and delivery teams to understand needs, evaluate options, and align on the best architecture direction across work streams and domains.
• Analyze technical trade‑offs, validate assumptions, evaluate implementation alternatives, and make recommendations that balance compliance, scalability, resiliency, maintainability, and speed of delivery.
• Lead application inventory, classification, current‑state disposition, target‑state decisioning, and migration‑wave planning for in‑scope GM Defense applications and platforms.
• Define architecture decision frameworks and guide strategic choices across platforms, hosting models, integrations, and modernization paths.
• Own the target‑state architecture and enterprise roadmap for reducing Fed Zone / LLC operating friction, improving user experience, and supporting a scalable operating model for future growth.
• Lead architecture efforts related to security, compliance, access management, data protection, and other requirements for regulated environments.
• Define enterprise architecture roadmaps, standards, and phased transition plans that enable implementation teams to execute against a clear future‑state direction with reduced risk.
• Support architecture governance and review processes through target‑state architecture views, decision frameworks, architecture design artifacts, and other required documentation that guide execution and traceability.
• Drive alignment and decisions across internal and external stakeholders, including in situations where legacy practices, competing priorities, or differing risk views constrain agreement.
• Act as a strategic thought partner and subject‑matter expert for complex architecture and operating‑model decisions, helping leadership move from strategy to execution and measurable outcomes.

• Bachelor’s degree in Information Technology, Engineering, Computer Science, or related field.
• 10+ years experience in enterprise architecture, solution architecture, systems design, or related senior IT architecture roles.
• Experience defining end‑to‑end architectures for complex enterprise solutions, including application, integration, infrastructure, security, and operational considerations.
• Experience establishing architecture direction, standards, guardrails, and technology roadmaps across one or more business or technical domains.
• Experience architecting or governing secure or highly controlled environments with strong identity, access,…