Lead Microsoft O365 Engineer

Description

We are looking to improve and advance our organization. Our program is focused on the delivery of end-user centric IT technology solution to our customer where we are challenged to provide ongoing innovative and seamless experience while user systems, applications and solutions, provide proactive secure development of IT integrations, automation, concepts, and designs across the enterprise and integrate end-use computing devices, conference room technology, infrastructure hardware and software, Microsoft 365 workloads, identity services, endpoint management, and user applications into a streamlined and seamless experience across the user base. We foster a positive end-user experience while ensuring protection of the data.

The successful candidate will work within an ITIL environment with a large focus on DevOps, automation, and sustaining engineering. The candidate will be a member of the Microsoft 365 Engineering Team providing engineering support for the Microsoft 365 tenant and related services in a hybrid environment. The system is based on Microsoft technology, including on-premises services, Microsoft 365, Entra, Intune, and support for more than 15,000 users. Priorities will include managing email, messaging, collaboration, meeting, and user-management services. The candidate independently develops solutions, approaches, or makes recommendations to resolve a wide range of complex or difficult problems for both internal/external customers, including vendors. These processes and production requirements often require a flexible work schedule. Serve as a mentor for Junior Engineers.

The candidate may need to deliver presentations and produce well-written technical documents tailored to the customer's environment and objectives. They will be trained to operate in an Agile Scrum methodology. Participation in scrum sprint activities related to Microsoft 365 engineering, automation, email, messaging, collaboration, meeting and user-management services, Entra, Intune, and hybrid solutions is required. The candidate must possess strong verbal and written communication skills to effectively interact with the customer's technical staff.

Primary Responsibilities

Responsibilities include troubleshooting and collaborating with other technical functional groups such as Service Desk, Datacomm, Security, Engineering Teams, Endpoint Management, Identity Management, and application teams for all supported technical issues. Other duties will encompass, but are not limited to:

• Collaborate with Identity Management, Collaboration, Messaging, Mobility Services, Endpoint Management, Security, and Engineering resources to reach quality results and progressive achievements.
• Understand cross-team dependencies to ensure new or changed solutions comply with department vision, environment, and security considerations.
• Identify opportunities for improved user experience, service reliability, automation, and operational efficiency.
• Understand requirements gathering, evaluation, testing, and lifecycle management for hardware & software.
• Support efforts for large-scale Microsoft 365 administration automation for user T0 self-service, admin support, monitoring system health, and day-to-day operations.
• Provide consultation on the design, plan, and execution Microsoft 365 workloads including Exchange Online, OneDrive, SharePoint Online, messaging and meeting systems, Entra, Intune, and related service integrations.
• Support the development, deployment and execution of Microsoft 365 services, automation capabilities, and develop roadmaps and services strategies.
• Engineer, deploy, automate, and provide sustaining engineering support for our customer program.
• Assist in developing concise and accurate engineering documentation on current and proposed cloud environment including Visio Diagrams, As-Built documents, recommendations for solutions, run books, knowledge guides, script documentation, system health check procedures, and other operations guides.
• Provide technical and operational subject matter expertise for Microsoft 365 Service adoptions, automation, Entra, Intune, and hybrid service operations in the organization.
• Work with little or no supervision, provide guidance to the team when necessary, and be able to adapt to changing requirements, changing priorities, and complex technical dependencies.
• Maintain, troubleshoot, and enhance existing automation scripts, system health checks, reporting, and operational validation processes.
• Routinely evaluate related Microsoft 365 processes and work for continuous process improvements and automation.
• Create new and modify existing PowerShell scripts, Microsoft Graph-based automation, and automation code written in C#, C++, Python, or related scripting/programming languages.
• Provide strategic planning for the ongoing design, development and improvement of Microsoft 365, Entra, Intune, automation, and hybrid infrastructure services.
• Create and maintain documentation related to Microsoft 365 engineering processes, automation scripts, health check processes, and ConOps on a quarterly basis.
• Create and maintain comprehensive documentation for configurations, processes, and procedures related to Microsoft 365 administration, Entra administration, Intune administration, scripting, and automation.
• Take the Lead with issue escalation by Deskside support team, Service Desk, Security, Engineering, and other IT teams.
• Participate as required with Agile Scrum sprints and other Agile ceremonies.
• Stay abreast of current and emerging technologies, regularly analyzing and evaluating their impact and benefit to the customer.
• Provide guidance to address risks related to data privacy, ethics, compliance, identity, endpoint security, and automation.
• Provide technical and operational support across the Microsoft 365 product suite, including but not limited to SharePoint Online, OneDrive, Teams, Microsoft 365 Groups, Lists, OneNote, Forms, Power Automate, Power BI, and related services.
• Leverage Microsoft 365 collaboration, productivity, reporting, and automation tools to support internal operations, improve service delivery, and enhance the end-user experience.
• Provide engineering support for Intune-managed Windows devices, including device configuration, compliance, application deployment, endpoint security settings, troubleshooting, and lifecycle management.

Basic Qualifications

• BS degree and 8+ years of prior relevant experience or Master with 6+ years of prior relevant experience. Additional years of experience may be substituted in lieu of degree.
• Must be able to obtain and maintain a Public Trust or higher security Clearance.
• Experience with implementation and administration Microsoft 365 services including Exchange Online, SharePoint Online, OneDrive, Microsoft 365 Apps, Intune, Entra ID, and hybrid Microsoft 365 environments.
• Experience with Microsoft 365 Security Services, Microsoft Defender capabilities, Conditional Access, identity protection, endpoint security, and secure service configuration.
• Demonstrated Knowledge of Microsoft 365 support technology including but not limited to, Active Directory, DirSync, Entra Connect, Active Directory Federation Services (ADFS), Entra, Conditional Access Policies, MFA, PIM, application registrations, and hybrid identity services.
• General Knowledge of Microsoft 365 service administration, Exchange Online mail flow, SharePoint Online, OneDrive, Intune, Entra, endpoint management, routing, and related security appliances or services.
• Strong experience in PowerShell, Microsoft Graph, and scripting/programming languages such as C#, C++, Python, or related technologies.
• Strong understanding of standard client/server, networking, TCP/IP, and Internet fundamentals.
• Strong knowledge of Microsoft Authentication Protocols, Modern Authentication, identity lifecycle, token-based authentication, and Conditional Access behavior.
• Proven experience with standard monitoring tools, scripting methodologies, practices, automation-based system or environment health checks, and maintaining existing operational automation.
• Experience with Azure application registrations migrating apps from Basic Auth to Modern Auth and supporting application permissions, Graph permissions, certificates, secrets, and service principal lifecycle management.
• Strong Active Directory Group/User object manipulation, Entra user and group administration, dynamic groups, role assignments, and hybrid identity troubleshooting.
• Working knowledge of Microsoft PKI, certificate-based authentication, device certificates, and certificate dependencies for Microsoft 365 and endpoint management services.
• Strong understanding of infrastructure services: DNS, WINS, DHCP and how they support hybrid Microsoft 365, identity, endpoint, and application services.
• Strong technical writing and presentation skills.
• Ability to communicate effectively with all leadership levels and multiple IT teams.
• Ability to resolve complex problems using significant application of technical knowledge conceptualizing, reasoning and interpretation.
• Ability to obtain a Public Trust clearance.
• Demonstrated knowledge of the Microsoft 365 product suite.
• Experience using Microsoft 365 products and services to support daily operations, engineering activities, projects, initiatives, customer requirements, and end-user support needs.

Preferred Qualifications

• Previous experience working in an Agile Scrum environment.
• Previous experience employing DevOps methodologies.
• Experience with change control principles and tickets with Service Now (SNOW).
• Understanding of agency Capstone and NARA data retention compliance principles.
• Experience with design, planning and implementation in environment with 10,000+ users.
• Experience with Azure services that support Microsoft 365 automation, integration, and operations, including Logic Apps, Azure Automation, Azure Functions, Key Vault, storage accounts, managed identities, service principals, and application registrations.
• Experience building or maintaining Power Automate flows, Power BI reports or dashboards, SharePoint Online lists/libraries, Forms-based intake processes, and other Microsoft 365-based operational tools.

Job Details

• Skills: O365, Microsoft, Office 365, Active directory, Windows, Azure, Powershell, Cloud
• Experience Level: Expert Level
• Job Type & Location: Contract to Hire, Reston, VA (Fully Remote)
• Pay Range: $45.00 - $65.00/hr
• Application Deadline: Jun 19, 2026

Benefits

Eligibility requirements apply to some benefits. If eligible, the benefits available for this temporary role may include:

• Medical, dental & vision
• Critical Illness, Accident, and Hospital
• 401(k) Retirement Plan
• Life Insurance
• Short and long-term disability
• Health Spending Account (HSA)
• Transportation benefits
• Employee Assistance Program
• Time Off/Leave (PTO, Vacation or Sick Leave)

About TEKsystems

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. TEKsystems is an equal opportunity employer.