Sr. System Engineer (MS 365)

We are assisting a client in Plano, TX with hiring a Senior Systems Engineer. The position requires 9+ years of experience and is onsite. Mandarin language skills are preferred. The Senior Systems Engineer is a senior-level infrastructure professional 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.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.Key responsibilities: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 analysisInstall, configure, and maintain hardware, software, and cloud services across enterprise environmentsMonitor system performance, availability, and storage utilization, and proactively address risks, capacity issues, and technical debtPlan and execute system upgrades and improvements to support growth, stability, and securityImplement and maintain security standards and controls across infrastructure platformsMaintain accurate and up-to-date technical documentation, standards, and proceduresAutomation & Platform ImprovementSupport and implement automation initiatives to improve reliability, efficiency, and consistencyManage and support open-source platforms and tools used within the infrastructure environmentContinuously evaluate and improve tooling, monitoring, and operational processesTeam Collaboration & LeadershipProvide technical guidance and mentoring to systems administrators and engineersSupport team members by reviewing designs, assisting with complex troubleshooting, and sharing best practicesCoordinate with cross-functional teams to deliver infrastructure projects and operational improvementsSupport escalated helpdesk requests when requiredWork flexibly with Asia and Brazil time zones to support global operationsJob Requirements:EducationBachelor's degree in Computer Science or a related fieldRelevant certifications such as Microsoft, VMware, NetApp, or Commvault are desirableExperience9-12 years of experience in enterprise IT or infrastructure engineering rolesDemonstrated experience working in global, multi-site environmentsProven ability to independently own and deliver complex technical solutionsTechnical SkillsStrong experience with hybrid cloud environments, including:VMware and Hyper-V virtualization platformsAdministration of Microsoft M365 services (Hybrid Exchange, SharePoint Online, Teams, OneDrive, Intune) using PowerShellStrong programming /scripting skillsStrong experience with backup, restore, and disaster recovery solutionsAdministration of Windows Server Management of Active Directory, Group Policy, DNS, DHCP, and hybrid identity environmentsSupport of Exchange Server (on-premises and cloud) hybrid environmentsExperience managing NAS and SAN storage platformsExperience supporting Kubernetes (K8s) environmentsWorking knowledge of networking fundamentals, including TCP/IP, LAN/WAN, VPN/SSL, and endpoint securityExperience with monitoring platforms such as Zabbix, including dashboards and alertingManagement of SCCM/MECM, OS imaging, compliance baselines, and WSUS patchingStrong troubleshooting skills across servers, endpoints, virtualization, backups, and cloud platforms Professional AttributesStrong verbal and written communication skillsHighly organized with the ability to manage priorities and time effectivelyProactive, self-motivated, and comfortable working independentlyStrong analytical and problem-solving skills with attention to detailCollaborative mindset with the ability to work effectively across global teamsComfortable taking ownership and accountability for technical outcomesEnthusiastic about learning and adopting new technologiesAbility to clearly explain technical concepts to both technical and non-technical audiencesPreferred bilingual: MandarinDesired Skills and ExperienceVMware and Hyper-V virtualization platformsAdministration of Microsoft M365 services (Hybrid Exchange, SharePoint Online, Teams, OneDrive, Intune) using PowerShellStrong programming /scripting skillsStrong experience with backup, restore, and disaster recovery solutionsAdministration of Windows Server Management of Active Directory, Group Policy, DNS, DHCP, and hybrid identity environmentsSupport of Exchange Server (on-premises and cloud) hybrid environmentsExperience managing NAS and SAN storage platformsExperience supporting Kubernetes (K8s) environmentsWorking knowledge of networking fundamentals, including TCP/IP, LAN/WAN, VPN/SSL, and endpoint securityExperience with monitoring platforms such as Zabbix, including dashboards and alertingManagement of SCCM/MECM, OS imaging, compliance baselines, and WSUS patchingStrong troubleshooting skills across servers, endpoints, virtualization, backups, and cloud platformsAll qualified applicants will receive consideration for employment without regard to race, color, national origin, age, ancestry, religion, sex, sexual orientation, gender identity, gender expression, marital status, disability, medical condition, genetic information, pregnancy, or military or veteran status. We consider all qualified applicants, including those with criminal histories, in a manner consistent with state and local laws, including the California Fair Chance Act, City of Los Angeles' Fair Chance Initiative for Hiring Ordinance, and Los Angeles County Fair Chance Ordinance.