Senior Infrastructure Engineer – Staffordshire

Senior Infrastructure Engineer (258lw) – Staffordshire - £60,000.00 - £65,000.00 pa + benefits Our client, an IT services provider working within Defence and Government, is looking for a highly skilled Senior Infrastructure Engineer with expertise in Public Key Infrastructure (PKI), security integration & high availability systems. You will be responsible for implementing and maintaining secure, scalable, and resilient infrastructures that support mission-critical services, ensuring compliance with best practices and security standards DUE TO THE NATURE OF THIS RECRUITMENT CONSULTANCY, WE ARE ONLY ABLE TO REPRESENT INDIVIDUALS WHO ARE EX MILITARY. The role requires an understanding of Microsoft technologies, including Active Directory (AD) and Exchange, as well as experience with virtualisation, storage, and backup strategies in enterprise environments. UKSV is required for this position. Candidates must possess or be eligible to obtain clearance. Responsibilities will include Design, implement, and manage Microsoft Public Key Infrastructure (PKI) and integrate it with Hardware Security Modules (HSMs). Manage and configure Active Directory (AD) services including Group Policy, DNS, Domain Trusts, and Role-Based Access Control (RBAC). Implement security best practices using CIS Benchmarks. Identify and address security issues caused by hardening measures, providing necessary workarounds. Oversee security scanning processes, ITHC (IT Health Checks), penetration testing, and ensure timely resolution of identified vulnerabilities. Create and maintain detailed low-level design (LLD) documents. Perform peer reviews of technical documentation to ensure accuracy and clarity. Administer SQL Server 2019+ with a focus on high availability (HA) configurations like clustering and Always On availability groups. Manage security, backup, and maintenance plans. Maintain high availability of on-premise Exchange environments, with a focus on Database Availability Groups (DAGs). Implement and maintain Windows Server clusters, specifically related to file servers, SQL Server, and Exchange. Manage and support VMware environments, VXRail infrastructure, and enterprise storage solutions (e.g., VSAN, NetApp, Dell EMC). Work with secure toolsets like Paradox & Becrypt for specialised environments. Understand data diodes and ImpEx tools for secure data transfer. Experience Requirements Active Directory (AD) management, including Group Policy, RBAC, DNS, and Domain Trusts & hands-on experience with CIS Benchmarks, vulnerability management, and security issue remediation. Proficiency in designing and supporting SQL Server 2019+ environments, with a focus on HA (Always On, Clustering) & strong knowledge of on-premise Exchange Server (DAGs). Solid experience with VMware, VXRail, and storage solutions (VSAN, NetApp, Dell EMC). Understanding of NTP implementation and best practices & experience with secure environments, data diodes, and specialised tools like Paradox & Becrypt. Relevant certifications such as Microsoft Certified Solutions Expert (MCSE), VMware Certified Professional (VCP), Certified Information Systems Security Professional (CISSP), or equivalent are preferred. If you are interested in applying, please send a copy of your CV with a note outlining why this would be the ideal opportunity for you, to Liz Walsh at Ex-Mil Recruitment Ltd