The New York Independent System Operator (NYISO) manages the efficient flow of electricity on more than 11,000 circuit-miles of high-voltage transmission lines, dispatching power from hundreds of generating units across the state. The NYISO applies cutting-edge technology to operating a reliable electricity system, managing competitive markets for wholesale electricity, and planning for the Empire State's energy future. The NYISO’s Information Technology department invites applications for a full-time Senior Windows Administrator to join our Team. The Senior Windows Administrator designs, architects, implements, manages and administers large multi-site Microsoft server, Microsoft 365/Azure cloud, and client environments; responsible for system architecture, design, implementation, testing and administration; operating system, firmware and software package creation and installation; upgrades, patching, system integrity, security, disaster recovery, and performance. Creates, maintains, and adheres to server administration and user standards and procedures; leads or participates on project teams and collaborates with application developers and infrastructure peers as necessary; performs backup and restoration procedures. Leads and/or supports audit efforts and ensures compliance with corporate and regulatory standards; mentors and trains Associate and Professional-level Windows administrators; provides expertise in strategic IT planning; establishes and maintains working relationships with IT partners, business customers, and vendors; creates and maintains technical documentation.