Senior IT Support Engineer, Site Lead

Who We Are 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. Who You Are 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. Your Success Profile What You Will Work On IT Support (Primary) Day-to-Day Support: 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. Executive Support: 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. Onboarding Experience: 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. Asset Lifecycle: Support the full asset lifecycle — procurement, onboarding deployments, decommissioning, and inventory audits — in partnership with the global IT team. Cross-Team Collaboration: 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. Mentorship & Team Development: 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. Documentation & Continuous Improvement: 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. Partner with Workplace: Collaborate with the Workplace team to keep the physical IT environment (cabling, server room, workstations) in good working order. Network Support Maintain & Monitor: Proactively monitor local network health (Wi-Fi, LAN, and w…