Senior Infrastructure Engineer

Your CompanyA Belfast-based technology organisation delivering complex, high-quality digital and infrastructure solutions to public and private sector customers. The business is ambitious, fast growing and client focused, operating in a hybrid on-prem and cloud environment. Collaboration, security and continuous improvement sit at the heart of everything the team does.An experienced Senior Infrastructure Engineer is now required to join the Technical IT function, playing a key role in shaping and supporting enterprise-grade infrastructure services.Your RoleAs Senior Infrastructure Engineer, you will take responsibility for the end to end delivery, performance and continuous improvement of the organisation's infrastructure estate, supporting both internal users and external customers.You will provide technical leadership across infrastructure platforms, advising on best practice and contributing to new opportunities alongside sales, professional services and application teams. The role spans planning, design, implementation, maintenance and optimisation of infrastructure components across on-prem, virtual and cloud environments.You will drive automation, adopt modern tooling and embed robust cybersecurity controls to improve efficiency, resilience and security. Collaboration with development and application support teams will be key, along with supporting compliance and accreditation requirements and managing third-party suppliers.What You Need to SucceedYou will bring strong hands on experience across modern infrastructure and cloud technologies, including:

• Proven experience using Infrastructure as Code (Terraform, Bicep or ARM templates) and version control (Git)
• Deep knowledge of Microsoft Azure, including networking, security, governance and monitoring services
• Experience designing and implementing Azure Landing Zones and applying RBAC, policies and security best practice
• Strong Windows Server administration (2016, 2019, 2022, 2025), including Active Directory, Group Policy, DNS and DHCP
• Experience with VMware and/or Hyper V virtualisation
• Solid firewall and network security experience (Fortinet, Palo Alto, Cisco or similar)
• VPN configuration (site to site and remote access)
• Cisco routing and switching (OSPF, BGP, VLANs, STP)
• Hybrid connectivity solutions such as ExpressRoute and Azure VPN Gateway
• Hands on experience with F5 BIG IP (LTM) and/or Azure Application Gateway (WAF)
• Experience delivering Azure migrations, including lift and shift and re platforming approaches

Desirable

• Relevant Microsoft or Cisco certifications (AZ 104, AZ 305, AZ 700, CCNA/CCNP)
• Additional scripting, automation or DevOps experience
• Previous experience in a customer facing technical role

You'll combine strong technical capability with a proactive, delivery focused mindset, excellent problem solving skills and the ability to operate confidently under pressure. Eligibility for UK Security Clearance (SC) is required.
What You Will Get in Return

• Competitive permanent salary
• 26 days annual leave, increasing to 29 with service, plus bank holidays
• Flexible hybrid working based from the Belfast office.
• Pension scheme with employer contributions up to 10%
• Life assurance at 4x salary
• Optional benefits including private healthcare, dental and critical illness cover
• The opportunity to work on challenging, business critical infrastructure in a modern technical environment

What you need to do now
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