Sr. System engineer (Systems/DR)

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:
Core Engineering Responsibilities
* Design, build, operate, and support on-premises infrastructure, including Windows/Linux servers, AD, ADFS, DNS, DHCP, SCCM and proprietary services
* 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
* Manage and maintain backup, restore, and disaster recovery (DR) solutions
* Implement and maintain security standards and controls across infrastructure platforms
* Maintain accurate and up-to-date technical documentation, standards, and procedures
Platform Improvement
* Support and implement Windows/Linux and Internal proprietary 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
Team Collaboration & Leadership
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

Job Requirements:
Education
* Bachelor's degree in Computer Science or a related field
* Relevant certifications such as Microsoft, VMware, NetApp, or Commvault are desirable
Experience
* 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
Technical Skills
* Strong experience with hybrid cloud environments, including:
* Microsoft Azure administration (RBAC, Conditional Access, IaaS/PaaS)
* VMware and Hyper-V virtualization platforms
* Administration of Microsoft M365 services (Hybrid Exchange, SharePoint Online, Teams, OneDrive, Intune) using PowerShell
* Strong programming /scripting skills
* Strong experience with backup, restore, and disaster recovery solutions
* Administration of Windows Server and Linux (Ubuntu) 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
Professional Attributes
* 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 global teams
* Comfortable taking ownership and accountability for technical outcomes
* Enthusiastic about learning and adopting new technologies
* Ability to clearly explain technical concepts to both technical and non-technical audiences
* Preferred bilingual: Mandarin

All 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.