Senior Network Engineer

Senior Network Engineer

• Hertfordshire: Hybrid x3 onsite
• Package: £75k + car allowance + package

Overview:

We are seeking a strategic and forward-thinking Network Engineer to lead the design, governance, and evolution of our clients IT and network infrastructure. Working within a dynamic engineering environment, this role will play a key part in shaping the technology roadmap ensuring that infrastructure, security, and connectivity solutions are scalable, resilient, and aligned with business goals.

You’ll act as a subject matter expert, guiding technical decisions, supporting transformation to cloud-based services, and driving best practices across the organisation’s network and infrastructure landscape.

Role and Responsibilities:

• Define and implement the strategic direction for the company’s infrastructure and network architecture, ensuring alignment with business objectives and IT governance
• Lead the design, deployment, and management of secure, resilient, and scalable infrastructure solutions across on-premises and cloud environments
• Oversee network strategy and performance , including capacity planning, segmentation, and disaster recovery design
• Develop and maintain standards, policies, and procedures for infrastructure, networking, and security operations
• Drive the adoption of modern cloud and hybrid networking technologies within the Azure ecosystem
• Collaborate with cybersecurity, operations, and project teams to ensure network and data security across all business locations
• Lead or provide technical oversight for infrastructure transformation projects , including upgrades, migrations, and integration initiatives
• Develop and review technical documentation , including architecture diagrams, standards, and Low-Level Designs (LLDs)
• Advise senior management on emerging technologies and opportunities to enhance operational efficiency and resilience
• Mentor and support IT team members to build capability and ensure consistent technical excellence

Essential Skills & Experience:

• Proven experience in a senior infrastructure or network engineering role with strategic oversight responsibilities
• Deep understanding of network architecture and design principles , including routing, switching, and segmentation
• Strong knowledge of Microsoft Azure infrastructure and networking (VNets, NSGs, ExpressRoute, hybrid connectivity)
• Experience developing and enforcing infrastructure standards and governance frameworks
• Solid understanding of firewalls, VPNs, and network security fundamentals
• Expertise in Active Directory , Entra ID , and Microsoft 365 administration
• Strong communication and stakeholder management skills — able to translate complex technical requirements into business outcomes
• Microsoft Azure Administrator (AZ-104) certification or equivalent experience

Desirable

• Experience with Fortinet / FortiGate firewalls or other enterprise-grade security platforms
• Knowledge of SD-WAN or advanced WAN technologies
• Familiarity with Power Platform (PowerApps, Logic Apps, Dataverse) and Dynamics 365 Business Central
• Experience with Windows Server , Exchange , and PowerShell automation
• Any Fortinet NSE certification (e.g., NSE 4+) or equivalent vendor certification is advantageous