Infrastructure Engineer - L3
Job in
Greater London, London, Greater London, W1B, England, UK
Listed on 2026-07-11
Listing for:
Global Relay
Full Time
position Listed on 2026-07-11
Job specializations:
-
IT/Tech
Cloud Computing: Infrastructure & Operations, Systems Engineer, Azure, Cybersecurity
Job Description & How to Apply Below
We are seeking a skilled and motivated Senior Infrastructure Engineer to join our dynamic IT infrastructure team. The successful candidate will be responsible for designing, deploying, and optimizing cloud-based solutions across hybrid environments. You’ll play a key role in ensuring system reliability, scalability, and performance by leveraging automation, modern cloud architecture, and best practices.
Your Job- Design and implement cloud infrastructure solutions across Azure and hybrid on-premises environments.
- Develop and maintain Infrastructure-as-Code templates and automation scripts using tools such as Power Shell, ARM, Bicep, or Terraform.
- Implement security practices such as identity management, access control (RBAC) and PKI.
- Configure settings on Azure using Azure Policy.
- Deploy and manage Azure Landing Zones.
- Assist in the integration of on-prem workloads with the cloud services using best practices for scalability and security.
- Monitor cloud resources and services to ensure high availability and performance.
- Configure SSO and set up identity management using SAML, OIDC and Enterprise Applications.
- Collaborate with network engineers to configure secure connectivity (VPNs, Express Route, Private Link, etc.).
- Support Dev Ops teams with CI/CD pipeline implementation and integration with Dev Ops tools.
- Troubleshoot cloud-related incidents and perform root cause analysis.
- Maintain documentation of environments, configurations, and standard operating procedures.
- Stay up to date with emerging cloud technologies and compliance frameworks (e.g., ISO 27001, NIST, CSF).
- Subject Matter Expert for the design of on-premises and cloud-based Microsoft technologies, primarily Active Directory, Exchange hybrid, Azure and SQL.
- Escalation point for complex issues with DNS, GPOs, DHCP, File Services&Federation Services.
- Design and implement new processes and procedures to improve the environment and reduce technical debt.
- Contribute to roadmaps to ensure clear direction whilst factoring in existing technological investments and the impact of change.
- 10+ years’ experience infrastructure Operations/Engineering, including 5+ years of direct experience with design and implementation of on-premises and cloud Microsoft technologies.
- Hands‑on experience with Microsoft Azure services (VMs, Storage, Networking, Identity, Automation)
- Advanced scripting skills in Power Shell and Infrastructure-as-Code tools (Terraform, ARM, Bicep)
- Understanding of hybrid cloud architectures and secure mail transport using Exchange Hybrid setups.
- Knowledge of authentication protocols (SAML&OpenID Connect)
- Ability to troubleshoot complex issues across networking, certificates, authentication, and compliance
- Security first mindset: ensure all changes proposed and deployed provide a reasonable level of security based on the requirements and the data involved.
- Exposure to Zero Trust architecture principles
- Experience with Azure networking, Azure Firewall, Front Door, and DNS management
- Experience with containerization (AKS, Helm) and CI/CD integration
- Experience with monitoring and logging tools (Azure Monitor, Log Analytics, Event Viewer)
- Demonstrated ability to work both collaboratively in a team environment as well as independently in an effective and organized manner in a complex and challenging environment
- Comfortable working under pressure in a fast‑paced environment
- Excellent interpersonal and communication skills in both verbal and written English
- Strong organization skills and initiatives
- Experienced with troubleshooting&resolving complex technical problems, writing root cause analysis reports and documenting processes and procedures.
- Ability to analyze system usage and plan for growth and increases in system capacity.
- Ability to assess the need for any system redesign (minor or significant).
- Preferred Qualifications
- Azure Solutions Architect (AZ-305) and/or Cybersecurity Architect SC-100
- Bachelor’s degree in computer science, Information Technology, or related field, or equivalent work experience.
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