A financial-services organization is seeking a hands-on infrastructure professional to support the reliability and security of its production and recovery environments. This position combines Linux administration, physical infrastructure operations, system maintenance, monitoring, and incident response. You will work across engineering teams to resolve problems and improve operational readiness. RESPONSIBILITIES Maintain production and disaster-recovery infrastructure.Administer Linux servers and support Windows server operations.Diagnose hardware, OS, storage, and connectivity problems.Perform patching, upgrades, hardening, and vulnerability remediation.Coordinate server repairs, replacements, and lifecycle maintenance.Maintain monitoring, alerts, inventory, and runbooks.Participate in recovery testing and approved production changes.Own infrastructure incidents through restoration and support on-call coverage. Role Requirements Approximately 3 5 years of relevant infrastructure or systems engineering experience.Strong Linux administration and troubleshooting.Physical-server and data center experience.High-availability production support experience.OS patching and vulnerability-remediation experience.Working knowledge of networking, storage, virtualization, monitoring, and recovery.Experience with change management and operational documentation.Financial-services or another highly regulated industry background.Ability to meet NYC onsite, New Jersey data center, and on-call requirements. PREFERRED EXPERIENCE Trading, brokerage, clearing, or low-latency systems experience.AWS infrastructure operations.Familiarity with virtualization, proxy, observability, logging, and secrets-management platforms.Infrastructure automation or scripting.Data center environmental monitoring and technology-control experience.