About the job We currently have an exciting opportunity for an Infrastructure Engineer to join our existing experienced team. The Mission: You will build the "Foundational Layer" of a secure, high-assurance private cloud designed with SiXworks' private cloud principles and patterns. This role is responsible for the physical and logical installation and bring-up of the infrastructure that powers a new cloud environment. This assignment includes a 6 month build phase, followed by 2 months of data migration working with Windows Server Administration. Location: South West England What do we look for in an Infrastructure Engineer? Key Responsibilities: Fabric Underlay: Configure and harden Cisco Nexus Leaf/Spine architectures to support high-throughput, low-latency traffic. Enterprise Storage: Initialize and present NetApp storage arrays, ensuring data-at-rest encryption is strictly enforced. Infrastructure Virtualisation: Build and harden a Hyper-V cluster to host core services (AD/DNS/PKI). VMware VCF Integration: Assist in the enablement and integration of a VMware private cloud environment Hardware Security: Initialise and manage HSM/KMS appliances, leading the "Key Ceremonies" required for a high-assurance environment. Physical Build: Execute professional rack-and-stack and secure cabling in accordance with high-physical-security standards (e.g. SCIDA). Essential Experience: Hands-on expertise with Cisco Nexus (or equivalent) and NetApp ONTAP (or equivalent). Experience deploying Hyper-V in a high-availability, high-security configuration. Experience with VMware Cloud Foundation (e.g. VCF 5) Familiarity with hardware-based cryptographic systems (HSM/KMS). Experience with Windows Server 2022/2025 About SiXworks SiXworks is a leading provider of secure digital solutions, specialising in digital experimentation and focused on fail-safe-fast cutting-edge technology solutions deployed in highly secure environments. We are unified in our mission to accelerate innovation and adoption of secure, digital technology to improve the operational agility of Defence and National Security. This is an exciting time for us, we have ambitious plans for continued growth and development, and we are seeking to add brilliant, experienced, motivated, and passionate people to our team to work with us on this journey. Why join SiXworks? SiXworks’ expertise includes Secure-by-Design, cloud computing, advanced network and infrastructure design, rapid application development, cross-security domain systems, multi-tenanted High-Performance Compute, multi-source data platforms, cyber vulnerability mitigation, and intelligence systems. We provide supplier-agnostic, technical, and business consultancy to customers while championing open-source and best-of-breed technologies. A word on UK Security Clearance Due to the secure nature of the position and working environment, you must have, or be eligible to obtain the highest level of Security Clearance. More details relating to UK Security Clearance can be found here: United Kingdom Security Vetting: clearance levels - GOV.UK (www.gov.uk) SiXworks is an IBM subsidiary which has been acquired by IBM and will be integrated into the IBM organisation. SiXworks will be the hiring entity. By proceeding with this application, you understand that SiXworks will share your personal information with other IBM subsidiaries involved in your recruitment process, wherever these are located. More Information on how IBM protects your personal information, including the safeguards in case of cross-border data transfer, are available here: https://www.ibm.com/privacy