Windows Infrastructure Operations Engineer

Location: New York Qube Research & Technologies (QRT) is a global quantitative and systematic investment manager, operating in various liquid asset classes worldwide. The company uses a technology and data-driven approach to investing. By combining data, research, technology, and trading expertise, QRT adopts a collaborative mindset to address complex challenges. The company's culture of innovation aims to achieve high-quality returns for investors. The Infrastructure Operations Team ensures the stability and performance of QRT’s global Windows platforms, which underpins both trading and research platforms. The team works closely with end users, application teams, and engineering groups to provide day-to-day operational support, while also driving automation, monitoring, and deployment initiatives across a high-performance computing environment. Your Future Role within QRT Monitor the health, availability and performance of Windows infrastructure and respond proactively to alerts and service degradation. Provide 2nd- and 3rd-line operational support for Windows Server, Active Directory, VMware and associated infrastructure services. Investigate and resolve incidents affecting Windows servers, applications and virtual machines, escalating complex engineering issues to the UK platform team where appropriate. Perform routine administration, maintenance and approved changes across Windows Server 2022–2025 environments. Support Active Directory, Group Policy, DNS, certificate services and Entra ID integration. Manage server patching, security remediation, capacity and operational lifecycle activities. Monitor and troubleshoot server backups, supporting recovery testing and disaster recovery readiness. Support VMware ESXi clusters, virtual machines, storage connectivity and related infrastructure. Use tools such as Splunk and other monitoring or SIEM platforms to investigate infrastructure, security and application issues. Support regional components of Citrix DaaS, Azure, Microsoft 365 and Intune services. Use PowerShell and existing automation tooling to improve operational efficiency and reduce repetitive tasks. Carry out infrastructure checks, operational validation and post-change monitoring for changes delivered by the UK engineering team. Coordinate with application, network, security and service teams to resolve cross-functional incidents. Maintain operational documentation, support procedures, knowledge articles and infrastructure records. Identify recurring problems and work with the engineering team on permanent fixes and service improvements. Contribute operational experience and regional requirements to global infrastructure projects. Your present skillset Strong hands-on experience supporting Windows Server environments in a large enterprise. Good knowledge of Active Directory, Group Policy, DNS and associated troubleshooting. Strong PowerShell skills for administration, diagnostics and operational automation. Experience supporting Windows patching, security hardening and vulnerability remediation. Experience administering VMware ESXi environments and troubleshooting virtual machines. Experience with enterprise backup platforms such as Veeam. Familiarity with monitoring, logging and SIEM platforms such as Splunk. A good understanding of storage technologies, including SAN and NAS. Working knowledge of Azure, Entra ID, Microsoft 365 and Intune. Experience supporting Citrix DaaS or other enterprise VDI environments would be beneficial. Familiarity with configuration and infrastructure automation tools such as Ansible and Terraform would be advantageous. A solid understanding of networking, PKI and infrastructure security principles. Strong analytical and troubleshooting skills across servers, desktops, applications and virtual infrastructure. The ability to take ownership of operational issues, prioritise effectively and remain calm during service incidents. Excellent communication skills and the ability to collaborate effectively with colleagues across different regions and technical disciplines. Base salary range for this position is $150,000 to $200,000 per year. QRT Total Compensation includes discretionary performance-based bonuses and a competitive benefits package.