Senior Microsoft 365 Architect

Job Title: Senior Microsoft 365 Architect Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: None Employee Type: Regular Percentage of Travel Required: None Type of Travel: None * * * The Opportunity: As the Senior Microsoft 365 Architect, you will design, implement, and transition a high profile, secure Microsoft 365 GCC High environment. You will lead governance development, requirements gathering, solution architecture, and long term modernization efforts aligned with emerging Microsoft cloud capabilities. You will serve as the primary technical authority driving secure collaboration, Zero Trust alignment, automation-first operations, and adoption of new platform services such as Copilot for Microsoft 365, Copilot Studio, Purview, and Dynamics 365 integrations. You will serve as the subject matter expert on a cross-functional team enabling secure collaboration across DHS CISA, ensuring cloud services meet mission objectives and remain compliant with evolving federal baselines and regulatory requirements. Responsibilities: • Lead the solution design, deployment, testing, and operational transition of a new Microsoft 365 GCC High tenant • Guide technical discussions with senior executives and stakeholders to shape enterprise collaboration and modernization strategies • Architect collaboration, security, governance, and automation across Microsoft 365: Teams, SharePoint, Exchange Online, OneDrive, Purview, Power Platform, and Copilot for M365 • Develop enterprise policies for content sharing, collaboration, data protection, retention, and Teams lifecycle management • Design and implement governance for Microsoft Copilot, Copilot Studio, and AI-driven workflows supporting mission operations • Integrate Microsoft 365 with Dynamics 365 workloads and mission-specific business applications • Develop engineering documentation such as HLDs, LLDs, governance playbooks, SOPs, and automation runbooks • Work with security, compliance, SOC, and ICAM teams to ensure solutions remain aligned with federal requirements, Zero Trust, and tenant baselines • Deliver a Microsoft 365 roadmap and lead enterprise adoption of new cloud capabilities Qualifications: Required: • BA + 15 years of experience, AA + 18 years, MA + 12 years, or 21+ years of directly relevant experience • 8+ years in Microsoft 365 architecture, collaboration solutions, migration, and modernization • Experience with Microsoft Entra ID concepts (hybrid identity, Conditional Access, directory architecture) • Expert understanding of Microsoft 365 and Teams stack: SharePoint, Teams, Exchange Online, OneDrive, Purview, Planner, Forms, Loop, Power Platform, and M365 Copilot • Extensive experience implementing, migrating, and supporting core O365 services: • Teams: collaboration, meetings, mobile, voice/telephony, cross-service integration • SharePoint Online: governance, information architecture, records management, policy enforcement • Exchange Online: mailbox migration, compliance alignment • OneDrive: secure file collaboration, device integration • Strong customer-service mindset working with diverse stakeholder groups and vendors • Excellent communication skills with the ability to clearly articulate technical concepts to cross-functional teams Desired: • Relevant Microsoft or Azure certifications (MS 102, SC 400, SC 100, AZ 305, etc.) • Experience with Azure services, scripting, PowerShell, Graph API, and automation pipelines • Experience with Microsoft Copilot deployments, Copilot Studio, or AI-enabled workflows • Experience with Dynamics 365 or integration of M365 across business applications - What You Can Expect: A culture of integrity. At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation. An environment of trust. CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality. A focus on continuous growth. Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy. Pay Range : There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits. Since this position can be worked in more than one location, the range shown is the national average for the position. The proposed salary range for this position is: $114,600-$252,100 CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.