The Systems Administrator is a hands-on technical expert on Mainstay’s Service Team, focused on keeping client environments secure, stable, and well maintained.

As a key layer between frontline support and technical leadership, this role owns recurring system-level work, drives standards across environments, and tackles complex escalations that go beyond day-to-day support.

Partnering closely with the Service Delivery Teams, the Systems Administrator helps deliver reliable, consistent service across Mainstay’s client base.

It’s a great fit for someone who thrives on technical depth, values operational excellence, and enjoys making a measurable impact on long-term client success.

What You Will be Doing Maintain secure, stable, and high-performing client environments through recurring system administration and proactive maintenance.

Perform core administration tasks including upgrades, permissions management, storage ...