Senior Systems Engineer​/Level 3 Engineer

People 1st, IT Inc Senior Systems Engineer / Level 3 Engineer

Work Arrangement:
Approximately 75% Remote / 25% Client Onsite

Employment Type:

Full-Time

Location:

San Francisco Bay Area NO REMOTE APPLICANTS ACCEPTED

People 1st IT is looking for an experienced Level 3 Engineer / Senior Systems Engineer to join our technical team. This is a senior technical role focused primarily on project implementation, infrastructure improvements, migrations, advanced troubleshooting, and technical escalations within a managed services environment.

The position is approximately 75% remote, with occasional onsite work at client locations for projects, implementations, assessments, or issues that require a physical presence.

The ideal candidate is comfortable taking ownership of complex technical projects from planning through implementation, working directly with clients, coordinating with vendors, documenting environments, and serving as an escalation resource for other technicians.

• Plan and execute client IT infrastructure projects from beginning to completion.
• Lead Microsoft 365 migrations, tenant configuration, and related cloud projects.
• Design, deploy, migrate, and troubleshoot Windows Server and Active Directory environments.
• Implement and support Microsoft Entra , Microsoft 365, Exchange Online, SharePoint, Teams, and One Drive.
• Perform server migrations, upgrades, virtualization projects, and infrastructure modernization.
• Design and troubleshoot networks, including firewalls, switches, wireless infrastructure, VLANs, VPNs, and site-to-site connectivity.
• Deploy and maintain backup and disaster recovery solutions.
• Perform advanced troubleshooting and serve as an escalation point for Level 1 and Level 2 technicians.
• Perform client infrastructure assessments and recommend technical improvements.
• Coordinate with third-party vendors, ISPs, software providers, and other technology partners.
• Maintain accurate technical documentation, diagrams, credentials, configurations, and project notes.
• Create implementation plans, migration plans, and project documentation.
• Communicate technical issues and recommendations clearly to both technical and nontechnical client contacts.
• Participate in onsite client work throughout the Bay Area.
• Assist with critical incidents and complex technical issues when necessary.

• Microsoft 365 administration
• Microsoft Entra  / Azure AD
• Exchange Online
• SharePoint and One Drive
• Microsoft Teams
• Windows Server
• Active Directory / Group Policy / DNS / DHCP
• Microsoft Azure
• Hyper-V and/or VMware
• Microsoft Intune / endpoint management
• Firewalls, switches, VLANs, VPNs, and wireless networking
• Ubiquiti / Uni Fi environments
• VOIP systems
• Backup and disaster recovery platforms
• Endpoint security / EDR solutions
• Remote monitoring and management platforms
• MSP documentation and ticketing systems
• Domain, DNS, SSL, and certificate management

The ideal candidate should have independently completed projects such as:

• Microsoft 365 migrations
• Server replacements and migrations
• Active Directory migrations
• File server and SharePoint migrations
• Office relocations and new-site deployments
• Firewall and network replacements
• Wi‑Fi deployments
• Cloud migrations
• Backup and disaster recovery implementations
• Infrastructure upgrades and modernization
• Tenant‑to‑tenant migrations
• Security and identity improvements

• Several years of senior‑level IT infrastructure experience, preferably within an MSP environment.
• Strong troubleshooting skills across servers, cloud platforms, networks, and endpoints.
• Ability to independently manage technical projects with limited supervision.
• Strong understanding of MSP operations and multi‑client environments.
• Comfortable working directly with…