Senior Microsoft 365 Engineer

We are seeking a Senior Systems Engineer, with expertise with M365. Thisis a senior‑level, full time role with our client, where they are looking for an infrastructure professional to be responsible for the design, implementation, operation, and continuous improvement of enterprise systems across a global, multi‑office environment. This role requires deep hands‑on technical expertise combined with the ability to lead by example
, guide other engineers, and take ownership of complex technical outcomes.

Our client does not work with AWS or Azure, but does work extensively with M365 cloud infrastructure.

Location:

Onsite in Plano, TX, 5 days per week.

Salary:
Up to $120,000 (please let us know what you are targeting).

This position is suited for a senior engineer who enjoys staying close to the technology, proactively solving problems, and supporting a team to deliver reliable, secure, and scalable infrastructure.

• Design, build, operate, and support Cloud infrastructure (M365)
• Serve as a senior technical escalation point (Tier
  3) for complex infrastructure issues, including incident response and root‑cause analysis
• Install, configure, and maintain hardware, software, and cloud services across enterprise environments
• Monitor system performance, availability, and storage utilization, and proactively address risks, capacity issues, and technical debt
• Plan and execute system upgrades and improvements to support growth, stability, and security
• Implement and maintain security standards and controls across infrastructure platforms
• Maintain accurate and up‑to‑date technical documentation
  , standards, and procedures

• Support and implement automation initiatives to improve reliability, efficiency, and consistency
• Manage and support open‑source platforms and tools used within the infrastructure environment
• Continuously evaluate and improve tooling, monitoring, and operational processes

Provide technical guidance and mentoring to systems administrators and engineers.

• Support team members by reviewing designs, assisting with complex troubleshooting, and sharing best practices
• Coordinate with cross‑functional teams to deliver infrastructure projects and operational improvements
• Support escalated helpdesk requests when required
• Work flexibly with Asia and Brazil time zones to support global operations

• Bachelor’s degree in Computer Science or a related field
• Relevant certifications such as Microsoft, VMware, Net App, or Commvault are desirable

• 9‑12 years of experience in enterprise IT or infrastructure engineering roles
• Demonstrated experience working in global, multi‑site environments
• Proven ability to independently own and deliver complex technical solutions

• Strong experience with hybrid cloud environments
  , including:
• VMware and Hyper‑V virtualization platforms
• Administration of Microsoft M365 services (Hybrid Exchange, SharePoint Online, Teams, One Drive, Intune) using Power Shell
• Strong programming /scripting skills
• Strong experience with backup, restore, and disaster recovery solutions
• Administration of Windows Server operating systems
• Management of Active Directory, Group Policy, DNS, DHCP, and hybrid identity environments
• Support of Exchange Server (on‑premises and cloud) hybrid environments
• Experience managing NAS and SAN storage platforms
• Experience supporting Kubernetes (K8s) environments
• Working knowledge of networking fundamentals
  , including TCP/IP, LAN/WAN, VPN/SSL, and endpoint security
• Experience with monitoring platforms such as Zabbix, including dashboards and alerting
• Management of SCCM/MECM
  , OS imaging, compliance baselines, and WSUS patching
• Strong troubleshooting skills across servers, endpoints, virtualization, backups, and cloud platforms

• Strong verbal and written communication skills
• Highly organized with the ability to manage priorities and time effectively
• Proactive, self‑motivated, and comfortable working independently
• Strong analytical and problem‑solving skills with attention to detail
• Collaborative mindset with the ability to work effectively across…