Are you a seasoned IT professional seeking to architect and maintain the critical backbone of modern business? Senior IT Support and Infrastructure Engineer jobs represent a pivotal career junction where deep technical expertise meets strategic oversight. These roles are designed for individuals who move beyond break-fix support to proactively design, secure, and optimize the entire technological ecosystem that powers an organization. Professionals in this senior capacity typically serve as the cornerstone of IT operations, bridging the gap between core support functions and high-level infrastructure strategy. A core responsibility involves ensuring the relentless reliability, performance, and security of both on-premises and cloud-based environments. This includes the comprehensive management of corporate networks—encompassing LAN/WAN, switching, routing, VLANs, and critical services like DNS and DHCP. They are the custodians of identity and access, managing complex hybrid environments that integrate on-premises Active Directory with cloud platforms like Microsoft Entra ID (Azure AD), ensuring seamless authentication and robust conditional access policies. The role demands a holistic approach to the Microsoft stack, including the administration of Windows Server, Hyper-V or VMware virtualization platforms, and the suite of Microsoft 365 services (Exchange Online, SharePoint, Intune). Security is paramount, with engineers directly responsible for configuring and maintaining perimeter defenses such as enterprise firewalls, implementing VPNs, and enforcing network segmentation. They establish and uphold operational rigor through systematic patch management, comprehensive backup strategies, and proactive capacity planning. Typical daily duties involve diagnosing and resolving escalated, complex infrastructure incidents, leading migration projects to modern platforms, and producing detailed technical documentation. Collaboration is key, as they work alongside security teams on vulnerability remediation, support compliance audits, and mentor junior staff. To excel in Senior IT Support and Infrastructure Engineer jobs, candidates generally require 5+ years of progressive infrastructure experience. Essential skills include an expert-level understanding of core networking protocols, advanced Windows Server and Active Directory management, and hands-on experience with hybrid cloud identity. Proficiency in scripting for automation, alongside strong analytical and problem-solving abilities, is expected. The role also demands excellent communication skills to translate technical challenges into business terms and to lead projects. For those passionate about building resilient, secure, and efficient digital foundations, these senior positions offer a challenging and rewarding career path at the heart of organizational IT strategy.
