Senior Infrastructure & Security Engineer in Tempe, Arizona

Location

Tempe, Arizona

Job Type

Internship

Company

Phoenix Staff Inc

Location: Onsite | Tempe, AZ

Employment Type: Full‑Time

Compensation: 125k‑135k/year

We are seeking a hands‑on Infrastructure & Security Engineer to take ownership of a mission‑critical SaaS environment supporting highly regulated customers. This role is ideal for someone who enjoys wearing multiple hats and thrives in smaller organizations where they can directly influence technology strategy while remaining close to the technical work.

In the near term, this individual will assume ownership of an established hybrid infrastructure environment spanning colocated data centers and Azure cloud services. They will be responsible for ensuring platform stability, understanding the current architecture, reducing operational risk, and maintaining security and compliance standards.

Longer term, this person will play a key role in modernizing the environment, helping drive the organization’s transition toward a cloud‑first Azure architecture while improving security, scalability, automation, and operational maturity.

This position reports closely into engineering leadership and will serve as the primary internal owner of infrastructure, security, and compliance initiatives.

What You’ll Be Doing

• Assume day‑to‑day ownership of a hybrid infrastructure environment spanning colocated data centers and Microsoft Azure

• Maintain uptime, reliability, backups, disaster recovery processes, and overall operational health

• Administer Windows Server environments, Active Directory, Microsoft Entra ID, networking, firewalls, VPNs, and related infrastructure services

• Evaluate existing infrastructure, identify risks, and document current‑state architecture, dependencies, network diagrams, and operational procedures

• Coordinate hardware lifecycle planning, infrastructure upgrades, and modernization initiatives

• Partner with engineering leadership to support software d