Senior Systems Engineer

The Senior Systems Engineer is a technical, hands-on role responsible for designing, implementing, securing, and maintaining enterprise collaboration and identity platforms, including Microsoft 365, Entra ID (Azure AD), Exchange Online, and on premises Active Directory environments. This role also supports hybrid identity, messaging, automation, endpoint management, and related infrastructure services across data center and cloud environments. In addition, this position will be responsible for proactively planning and implementing processes and procedures to ensure the systems are built, configured, monitored, and backed up using industry accepted best practices. It requires interaction, training, leading and mentoring the junior team members. This role will provide leadership and direction in the planning, organization, and execution of independent IT projects. Direct Reports: No, * Architect, administer, and optimize Microsoft 365 services including Exchange Online, Teams, OneDrive, SharePoint Online, and related security/compliance components.

• Manage Entra ID (Azure AD) including conditional access policies, identity governance, SSO integrations, MFA/2FA, and hybrid identity synchronization (Entra Connect).
• Implement and maintain M365 security including DLP, threat protection, and compliance configurations.
• Administer and maintain Exchange Online, mail flow, transport rules, and hybrid configurations.
• Oversee and enhance on premises Active Directory including GPO design, DNS, DHCP, identity lifecycle management, and replication health.
• Design and implement infrastructure automation using PowerShell and scripting methodologies.
• Lead and contribute to infrastructure, cloud modernization, and migration projects.
• Develop and maintain comprehensive documentation for architectures, configurations, procedures, and standards.
• Collaborate with other System Administrators to manage TPx infrastructure (data center and cloud-based infrastructure).
• Provide input on ways to improve the stability, security, efficiency, and scalability of the environment.
• Develop, implement, and maintain policies, procedures, and associated training plans for system administration, usage, and disaster recovery.
• Follow and update project plans, schedules, and related project documentation.
• Research new and maintain existing technologies.
• Respond to monitoring alerts/pages and troubleshoot problem areas as needed.
• Adhere to IT access-management and change control procedures.

Other Responsibilities:

• Collaborate cross-functionally to develop automation and deployment strategies.
• Work effectively in a team environment.

Do you have experience in Windows?, * Bachelor’s degree in Computer Science, Information Systems, Engineering, or equivalent experience.

• 7+ years of enterprise infrastructure experience, including 3+ years focused on Microsoft 365 and cloud identity platforms.
• Expert-level administration of Microsoft 365, Entra ID, and on-prem Active Directory.
• Strong knowledge of Microsoft security and compliance frameworks.
• Advanced experience with Windows and Linux operating systems, including system installation, maintenance, patching, troubleshooting, and cross-platform integrations.
• Proficiency in PowerShell and Bash scripting for automation and operational efficiency.
• Experience supporting hybrid and cloud environments, including AWS and Azure.
• Solid experience with PKI leveraging public and private CAs, reverse proxies, VMware administration, backup technologies, and secure baseline configurations.
• Strong analytical and problem-solving capabilities, effective communication skills, and the ability to work independently and collaboratively in high-pressure environments while maintaining a customer-focused mindset.
• Flexibility to work occasional evenings or weekends to support maintenance or project cutovers.

Other Qualifications:

• Microsoft certifications (MCSE, MCP).
• Experience with VMware administration and backup technologies.
• Experience with PKI / Certificate Services beyond core administration.
• Understanding of or ability to script in Perl.
• Experience developing and maintaining secure baselines.
• Ability to present technical ideas in user-friendly language.