Senior IT Support Engineer, Site Lead

Justworks•Phoenix, AZ

3h•$102,000 - $127,000•Hybrid

About The Position

At Justworks, you’ll enjoy a welcoming and casual environment, great benefits, wellness program offerings, company retreats, and the ability to interact with and learn from leaders in the startup community. We work hard and care about our most prized asset - our people. We’re helping businesses get off the ground by enabling them to focus on running their business. We solve HR issues. We’re data-driven and never stop iterating. If you’d like to work in a supportive, entrepreneurial environment, are interested in building something meaningful and having fun while doing it, we’d love to hear from you. We're united by shared goals and shared motivations at Justworks. These are best summed up in our company values, which are reflected in our product and in our team. Our Values If this sounds like you, you’ll fit right in. You're a seasoned IT support professional who pairs white-glove customer support with the technical depth to solve complex problems independently in a fast-paced environment. You bring sound judgment, professionalism, and the ability to navigate ambiguity without close oversight. As the first IT hire in our new Phoenix office, you'll be the local face of IT while also serving as a key technical resource for Justworkers across all our locations. In this hybrid role (3 days in office, 2 days remote), you'll report to the IT Support Manager and partner with our global IT, Network, and AV teams to keep operations running smoothly across the organization. Beyond core support, you'll bring strong network and AV capabilities to keep the Phoenix office running smoothly — and act as a trusted technical partner to leadership during high-visibility moments.

Requirements

5+ years of professional IT Support experience, including 2+ years supporting multiple offices or a distributed workforce.
Demonstrated experience providing white-glove technical support to executives and senior leadership in a high-visibility environment.
Proven track record of working independently as a senior IC — owning outcomes, exercising judgment, and operating without close oversight.
Advanced troubleshooting across macOS, Windows, mobile, and peripherals — including the ability to resolve complex, escalated issues.
Deep experience with MDM platforms (Jamf or Kandji for Mac; Intune or Airwatch for Windows).
Strong familiarity with cloud-first SaaS environments: Okta, Google Workspace, Slack, Jira, Confluence, 1Password, Zoom, Oomnitza or similar asset management tools.
Solid networking fundamentals — Wi-Fi, LAN, DHCP, DNS, VLAN configuration — and confidence with onsite tasks such as patching, cabling, switch/AP troubleshooting, and IDF/MDF work.
Hands-on experience with Zoom Rooms or Teams Rooms endpoints (e.g., NEAT, DTEN, Logitech, Poly, or similar) and leading the full technical execution of live events and All-Hands productions from pre-show through post-event teardown.
Excellent written and verbal communication; comfortable presenting to and supporting executive audiences.
Self-directed and dependable — able to work independently as the only IT person onsite in Phoenix while collaborating with a remote global team and supporting users across other locations.
Ability to travel occasionally to other Justworks offices to support onsite needs, events, and projects.
Experience mentoring peers, documenting standards, and driving process improvements across an IT organization.

Nice To Haves

Hands-on experience with Meraki-based environments (MX, MS, MR) and 802.1X authentication.
Familiarity with redundant or dual-ISP network architectures, including failover validation and ISP coordination.
Experience supporting corporate AV beyond Zoom Rooms — including DSP platforms (e.g., QSC Q-SYS), signal distribution and control systems (e.g., Extron), and wireless microphone systems (e.g., Shure).
Experience with network monitoring and zero-trust security tools (e.g., Datadog, Zscaler, Cloudflare WARP, or similar).
Scripting experience (Bash, PowerShell, Python).
Endpoint security tool familiarity (e.g., CrowdStrike, SentinelOne, Jamf Protect).
Experience supporting a new office buildout end-to-end.
Experience operating as a senior IC across a multi-site organization.
Experience partnering directly with C-suite or board-level stakeholders.

Responsibilities

Serve as the primary onsite contact in Phoenix for technical issues across macOS, Windows, mobile devices, and peripherals.
Actively support Justworkers across all Justworks offices — providing remote support daily.
Independently troubleshoot and resolve complex issues, escalating to global teams as needed.
Deliver senior-level, white-glove technical support to leadership and executives across Justworks.
Anticipate needs, troubleshoot discreetly under pressure, and serve as a trusted technical partner during high-visibility moments — board meetings, leadership offsites, executive travel, and live events.
Run and support new hire orientations for Phoenix and assist with orientations at other sites as needed.
Own the Phoenix onboarding experience end-to-end, ensuring new Justworkers have a smooth, polished first day.
Support the full asset lifecycle — procurement, onboarding deployments, decommissioning, and inventory audits — in partnership with the global IT team.
Partner with global IT, People, Workplace, and Security teams on initiatives that touch the employee experience — onboarding, offboarding, access reviews, and new tool rollouts.
Represent the Phoenix site's needs and operational realities in cross-functional discussions.
Mentor peers on the IT Support team under the direction of the IT Support Manager.
Share learnings from the field, act as a senior technical resource across the IT organization, and help raise the bar on technical excellence and customer experience.
Maintain clear, current documentation for Phoenix site operations, runbooks, and troubleshooting playbooks.
Identify recurring issues and partner with the IT Support Manager to scope and drive improvements that reduce ticket volume, improve resolution time, and elevate the employee experience.
Collaborate with the Workplace team to keep the physical IT environment (cabling, server room, workstations) in good working order.
Proactively monitor local network health (Wi-Fi, LAN, and wired connectivity) and serve as the first point of contact for office-level connectivity issues.
Escalate to the global Network team with clear, documented observations.
Act as the onsite technical resource for the global Network Engineering team — executing physical tasks such as patching, cable management, and gear staging within the IDF/MDF under remote guidance.
Troubleshoot and resolve end-user network issues (Wi-Fi drops, port-level connectivity, VPN) and manage local ISP-related escalations before engaging global teams.
Perform daily walkthroughs of all conference and collaboration spaces, ensuring Zoom Rooms, displays, cameras, and audio are fully operational before the business day begins.
Provide hands-on AV support for onsite meetings, town halls, and Phoenix-based All Hands events — managing basic audio, display routing, and Zoom session health.
Serve as the onsite point of contact for AV vendors during equipment repairs or refreshes, coordinating access and communicating status to the global AV team.
Support site-level and cross-site projects scoped by the IT Support Manager — including office buildouts, hardware refreshes, MDM rollouts, and new tool deployments — partnering with global IT, Network, and AV teams on execution.