Sr. Infrastructure Engineer

Sr. Infrastructure EngineerThe Client is seeking an experienced Senior Infrastructure Engineer to support and enhance its hybrid infrastructure environment. The ideal candidate must possess strong technical expertise across Windows Server, cloud platforms, security, patching, automation, and production application support. This role requires in-depth and hands-on experience performing upgrades, migrations, remediation, and troubleshooting within mission-critical systems.The Senior Infrastructure Engineer will work across diverse technologies including Java, .NET, Oracle, SQL, Microsoft Dynamics, and warehouse platforms, supporting both server-level and complex production application needs. The engineer must also demonstrate strong networking knowledge, including deep familiarity with OSI layers and network protocol behavior. Preferred qualifications include Microsoft- and network-focused certifications.Key Responsibilities:Administer, maintain, and optimize Windows Server environments across on-premises and cloud-based infrastructure.Perform OS upgrades, patch installation, testing, and ongoing system updates to ensure reliability and security.Develop and use PowerShell scripts and other automation tools to execute centralized and repetitive tasks efficiently.Lead and execute server migrations, including transitioning workloads from on-premises systems into cloud platforms.Implement and maintain security configurations for servers, including endpoint protection, access control, and hardening standards.Conduct vulnerability remediation for servers and applications to maintain security compliance.Manage patching cycles and use SCCM or similar platforms for automated patch deployment and reporting.Maintain ongoing monitoring and performance assessment of infrastructure services to identify and resolve issues proactively.Oversee routine backup operations and support recovery processes for mission-critical systems.Develop, refine, and support Disaster Recovery (DR) strategies to minimize downtime and protect data integrity.Provide advanced server-level support for enterprise applications using.NET, Java, SQL, Oracle, Microsoft Dynamics, and warehouse technologies.Troubleshoot high-impact production issues across hybrid infrastructure and middleware layers.Apply deep knowledge of OSI model layers and networking protocols to diagnose connectivity and application issues.Collaborate with cross-functional teams to support application deployments and infrastructure enhancements.Translate business or user requests into actionable technical solutions and communicate effectively in English, both verbally and in writing.Work closely with the IT Portfolio Manager and Infrastructure & Operations teams to align engineering efforts with organizational needs.Required / Desired Skills:In-depth hands-on experience working with Windows Server in hybrid environments (on-premises and cloud).Demonstrated ability to translate user requests, provide technical support and communicate effectively in English orally and in writingIn-depth hands-on experience with OS upgrades, patch installation and testing,In-depth hands-on experience with scripting utilities (PowerShell)and Windows server scripting to accomplish centralized tasksIn-depth experience performing regular patching and updates to ensure system security and stability.Experience overseeing backup operations and recovery processes in mission critical environments.In-depth experience planning and executing server migrations, including moving workloads from on premises to the cloud.In-depth experience working in an environment that utilizes multiple frameworks/technologies including.NET, Java, SQL/Oracle, Microsoft Dynamics, etcIn-depth experience providing server-level support and troubleshooting issues for production applications.In-depth experience managing vulnerability server and application remediation.Experience with tools like SCCM for automated patch management & deployment.Experience crafting disaster recovery (DR) plans to ensure minimal downtime and prevent data loss.Strong networking knowledge - including understanding OSI layer functionality and network protocols.Ability to work with cross-functional teams to address infrastructure needs and support application deployment.Have achieved Microsoft-focus certifications such as Azure Administrator Associate, Windows Server Hybrid Administrator Associate, etc.Has achieved network focused certifications such as Network+, CCNA, etc. Apollo ITS