Network Engineer

About Us

Balfour Beatty is a leading international infrastructure group delivering complex projects worldwide. Our IT and Digital teams enable secure, reliable, and high-performing technology services that support business operations and digital transformation.

About the Role

We are seeking an experienced IT Network Engineer to manage, support, and improve enterprise network infrastructure across LAN, WAN, Wi-Fi, firewalls, and load-balancing environments. Reporting to the IT Network Manager, this role focuses on network availability, security, performance, operational support, and the integration of scalable network technologies.

Key Responsibilities

• Develop and maintain accurate network documentation, architecture diagrams, configuration records, and operational procedures.
• Implement, configure, manage, and support enterprise LAN, WAN, Wi-Fi, firewall, VPN, and load-balancing infrastructure.
• Monitor network availability, capacity, security, and performance; proactively identify and resolve service issues.
• Troubleshoot complex network incidents, perform root cause analysis, and implement corrective actions to minimise downtime and disruption.
• Configure and support Cisco IOS-based network devices, Cisco Meraki solutions, Palo Alto firewalls, and F5 BIG-IP load balancers.
• Manage routing and network services, including TCP/IP, DNS, DHCP, BGP, and OSPF.
• Maintain network device patch levels, firmware versions, and security configurations to reduce cyber risk.
• Support security audits, vulnerability assessments, remediation activities, and compliance with Cyber Essentials and data protection requirements.
• Collaborate with Information Security, Architecture, Service Desk, Change Management, Compliance, managed network providers, and third-party support teams.
• Support the design and integration of new network technologies, cloud connectivity, and network architectures across AWS, Microsoft Azure, and Oracle Cloud Infrastructure (OCI).
• Manage F5 BIG-IP load balancers to improve application availability, resilience, and performance.
• Provide technical guidance and knowledge sharing to network engineers and operational support teams.
• Participate in change, incident, problem, and business continuity processes in line with organisational standards.

Technical Skills & Expertise

• Strong hands-on experience in enterprise network engineering, operations, and cybersecurity management.
• Expertise in Cisco IOS, Cisco Meraki, Palo Alto Networks firewalls, and F5 BIG-IP load balancers.
• Extensive knowledge of TCP/IP, DNS, DHCP, VPNs, VLANs, switching, and routing protocols, including BGP and OSPF.
• Experience supporting LAN, WAN, wireless, firewall, and load-balancing environments.
• Practical experience with network monitoring, packet analysis, diagnostics, and troubleshooting tools such as Wireshark.
• Ability to support network architecture design, implementation, integration, and continuous improvement.
• Understanding of cloud networking and integration across AWS, Microsoft Azure, and Oracle Cloud Infrastructure (OCI).
• Knowledge of network security controls, security hardening, vulnerability management, patching, and firmware maintenance.
• Familiarity with Cyber Essentials and Cyber Essentials Plus controls and certification requirements.
• Experience working within IT service management processes, including incident, problem, and change management.

Preferred / Desirable Skills

• Cisco Certified Network Professional (CCNP) or Cisco Certified Network Associate (CCNA) certification.
• Experience working with managed network service providers and third-party technical support partners.
• Knowledge of security auditing, vulnerability assessment, threat detection, and business continuity practices.
• Existing security clearance would be advantageous.
• Exposure to enterprise compliance, data privacy, and information protection requirements.

Qualifications & Experience

• 5+ years of experience in network engineering, network operations, or network and cybersecurity management.
• Proven experience supporting business-critical enterprise network infrastructure and resolving complex technical issues.
• Degree or diploma in Computer Science, Information Technology, Network Engineering, Cybersecurity, or equivalent practical experience.
• Relevant Cisco certification, preferably CCNP or CCNA.
• Experience working in a structured enterprise IT environment with cross-functional technical and business stakeholders.

Behavioural Skills

• Strong analytical, diagnostic, and problem-solving skills.
• Clear verbal and written communication with technical teams, service providers, business users, and senior stakeholders.
• Collaborative and team-oriented approach across security, architecture, operations, and support functions.
• Ability to manage multiple priorities, respond effectively to incidents, and deliver under pressure.
• Detail-oriented approach with a strong focus on network reliability, security, and service quality.
• Proactive ownership, continuous learning, and commitment to operational improvement.