As a Senior Infrastructure, you will join the Infrastructure team supporting some of the largest pharmaceutical manufacturers in Europe.

About the Role

We are looking for a Senior Systems Engineer to join our infrastructure team. You will be responsible for the design, deployment, and documentation of enterprise Windows infrastructure services across on-premises and hybrid cloud environments, with a strong focus on security and operational reliability. You will work with cross-functional teams to deliver HLD and LLD documentation and drive implementation from design to production.

Key Responsibilities

1. Design, deploy, and maintain Active Directory environments following Microsoft's Tiered Administration Model (Tier 0 / Tier 1 / Tier 2), RBAC, and Zero Trust principles
2. Administer and operate core Windows infrastructure services: Active Directory, DNS, DHCP, Group Policy (GPO), PKI/CA, NPS, WSUS, DFS, File Server, Print Server, and SMTP relay
3. Define and enforce Group Policy and security baselines across the estate
4. Design and manage virtualization platforms: VMware vSphere/ESXi and Microsoft Hyper-V, including migrations between platforms
5. Deploy and manage Azure infrastructure: virtual machines (including GPU-enabled), Azure Virtual Desktop (AVD), Azure Kubernetes Service (AKS), storage accounts, virtual networks, load balancers, and application gateways
6. Lead or contribute to Active Directory migrations — on-premises AD to Microsoft Entra ID (formerly Azure AD), including hybrid identity scenarios (Entra Connect, Entra Connect Cloud Sync)
7. Produce technical documentation: High-Level Designs (HLD) and Low-Level Designs (LLD) for infrastructure projects, including as-built documentation post-deployment
8. Review infrastructure designs for security compliance, reliability, cost optimization, and alignment with best practices
9. Participate in the segregation of domains and infrastructure services for regulated or sensitive environments (e.g., lab, OT, corporate)

Required Skills & Experience

1. Higher education in Computer Science, Information Systems, or a related field
2. Active Directory & Windows Services
3. Deep expertise in Active Directory design and administration, including multi-domain/multi-forest environmentsSolid understanding and practical implementation of the AD Tiered Administration Model (Tier 0–2)Hands-on experience with GPO design, DNS, DHCP, WSUS, PKI, NPS, DFS, File Server, and SMTP relayExperience deploying AD in segregated or air-gapped environments
4. Azure & Hybrid Identity
5. Proven experience deploying Azure IaaS/PaaS components: VMs, storage, VNets, load balancers, application gateways, AVD, AKSExperience with Entra ID (Azure AD) and hybrid identity: Entra Connect, SSO, Conditional Access, MFAFamiliarity with Azure security services and governance (RBAC, Azure Policy, Defender for Identity)
6. Virtualization
7. Strong hands-on experience with VMware vSphere/ESXi (management, HA, DRS, vMotion)Experience with Microsoft Hyper-VProven track record of VMware-to-Hyper-V migrations (or equivalent platform migrations)
8. Documentation
9. Ability to produce clear, structured HLD and LLD documents independentlyExperience documenting infrastructure designs for regulated industries (GxP, life sciences, or equivalent)
10. Nice to Have
11. Experience in pharmaceutical or life sciences environments (GxP, CSV awareness)Knowledge of network segmentation concepts (VLANs, firewall zones, DMZ)Familiarity with SCCM/Intune for endpoint managementMicrosoft certifications: AZ-800, AZ-801, AZ-104, AZ-305 or equivalentExperience with identity governance tooling

What We Value

1. Engineers who document as they build — not after
2. Clear, concise technical communication (written and verbal)
3. Structured thinking when designing complex, multi-layer environments
4. Ownership from design through to production

Benefits & Development

1. Permanent contract
2. Flexible compensation
3. Projects with leading pharmaceutical companies and essential infrastructure operators
4. Opportunity to grow in a highly specialized team focused on IT and OT infrastructure
5. Training and certification support in enterprise infrastructure technologies

Our Values

Ownership: We take responsibility and make things happen.

Customer First: We obsess over client value and outcomes.

Team Play: We win together.

Ambition: We set bold goals and push boundaries.

Excellence: We aim to be the best at what we do.