Role Description We are seeking a highly skilled Senior Windows Systems Administrator to join our infrastructure team. This role is responsible for the design, administration, and continuous improvement of enterprise Windows platforms, primarily hosted in AWS, with supporting services across on-premises and Microsoft cloud environments. As a senior, journey-level professional, you will work independently on systems with significant operational impact, apply sound technical judgment to complex issues, and contribute to improving the reliability, scalability, and efficiency of Windows-based infrastructure. You will collaborate closely with cloud, security, and application teams and provide guidance to less experienced administrators. Working Hours: 10:00 AM – 7:00 PM IST Key Responsibilities - Design, implement, operate, and maintain enterprise Windows Server environments across AWS and on-prem platforms. - Administer and support Active Directory and core identity services, including domain controllers, replication, and site topology. - Manage Windows Server workloads in AWS, including: - EC2 provisioning and lifecycle management - AMI-based deployments - Storage and volume management - Directory integrations with Active Directory - Administer DNS and DHCP services, ensuring availability, performance, and proper configuration. - Support and maintain Microsoft Exchange environments, including: - Exchange Online and on-prem Exchange (2016, 2019, Subscription Edition) - Mailbox migrations, management, and troubleshooting - Manage enterprise Windows file services, including DFS Namespaces, permissions, and storage. - Develop and maintain PowerShell automation to improve operational efficiency and system reliability. - Implement and maintain patching and update management using WSUS and related tooling. - Monitor system health and performance; troubleshoot and resolve complex Windows infrastructure issues. - Participate in incident, change, and problem management processes using ServiceNow. - Collaborate with cloud, security, and application teams to ensure secure and reliable platform operations. - Leverage AI-assisted tools (e.g., copilots, scripting assistants, operational analysis tools) to improve automation, troubleshooting efficiency, documentation quality, and overall operational effectiveness. - Contribute to the continuous improvement of infrastructure processes, standards, and documentation. - Provide guidance, coaching, and technical support to junior team members. - Participate in on-call support rotations as required. - Other duties as assigned. Qualifications - Bachelor’s degree in Information Technology, Computer Science, or a related field (or equivalent professional experience). - 5+ years of hands-on experience administering Windows Server in enterprise environments. - Extensive experience with Active Directory, including: - Domain controller health and replication - Sites and Services topology - Directory-level troubleshooting (including ADSI Edit) - Strong experience with Windows Server 2016–2025. - Deep understanding of Windows DNS, including: - AD-integrated zones - Forward and reverse lookup zones - Zone transfers, scavenging, and record aging - Strong experience with Windows DHCP, including load balancing, failover, and scope management. - Experience managing large-scale Windows file servers, including DFS Namespaces and share administration. - Extensive PowerShell scripting experience, including advanced automation and troubleshooting. - Preferred experience with Infrastructure-as-Code (IaC) concepts and tools (e.g., Terraform, AWS CloudFormation). - Experience supporting Microsoft Exchange: - Exchange Online and on-prem Exchange administration - Mailbox migration and lifecycle management - Working knowledge of Microsoft 365, including licensing and Entra Connect (AD Sync). - Strong hands-on experience with AWS as a primary cloud platform, including Windows EC2 management. - Familiarity with ServiceNow for incident, change, and ticket management. - Strong troubleshooting, analytical, and problem-solving skills. - Excellent communication and collaboration skills. Requirements - Familiarity with using AI-assisted tools in daily work, such as: - Script generation or refinement (e.g., PowerShell assistance) - Troubleshooting and log analysis - Documentation and knowledge discovery - Ability to evaluate AI-generated output for accuracy, security, and operational suitability. - Willingness to adopt emerging tools and practices to improve efficiency and system reliability. Preferred Qualifications - Experience with Microsoft Azure, including Virtual Machines, Resource Groups, and Storage services. - Experience with Microsoft Entra ID, including user, group, and enterprise application management. - Experience using SolarWinds for monitoring, alerting, and reporting. - Familiarity with WSUS, patch reporting, and patch compliance processes. - Experience supporting hybrid (on-prem and cloud) infrastructure environments. - Relevant AWS or Microsoft certifications. Additional Information - Working Hours: 10:00 AM – 7:00 PM IST (first shift), supporting global platform operations. - On-Call Support: Participation in a shared, rotational on-call schedule is required.

• Act as the primary internal subject matter expert for the Fiserv banking platform at University Bank. • Manage and maintain configuration settings on the Fiserv banking platform, including but not limited to: Job role and security settings, Business workflow automation, Reporting functions (scheduled and ad-hoc), Integration of Fiserv with other business platforms. • Documentation of compliance with established controls. • Develop and maintain procedures for the management of the Fiserv banking platform. • Act as a liaison between the Fiserv, University Bank business units, IT, and relevant third parties in support of the Fiserv banking platform. • Work with stakeholders to elicit, analyze, and document complex business requirements. • Create business & functional requirements documentation. • Participate and in some cases, lead discovery sessions with business partners to refine and find improvement opportunities within the Fiserv banking platform. • Manage ticket escalations between the bank representative and the Fiserv ticket holder. • Project management to ensure that Fiserv is providing sufficient updates on open projects. • Assist in researching system failures that should result in Fiserv invoice credits.

• Own and continuously improve endpoint management capabilities. • Implement and support endpoint security controls and hardening baselines. • Own endpoint provisioning workflows and zero-touch/low-touch deployment practices. • Function as a top-level escalation point for complex endpoint incidents. • Build and support automation to reduce repetitive manual work. • Create and support runbooks, operational playbooks, and high-quality documentation. • Collaborate across IT Operations and Security.

• Define and steward endpoint architecture patterns across management, security, deployment, and compliance. • Provide technical leadership across major endpoint roadmap initiatives. • Lead design and implementation of endpoint hardening and baseline configuration approaches. • Partner with Security using a shared delivery model. • Configure enforcement, remediations, reporting, and repeatable deployment pipelines. • Function as the final technical escalation point for complex endpoint incidents. • Own the endpoint engineering “source of truth” expectations.