Senior Network Engineer

Job description

Version 1 has celebrated 30 years in business and continues to be trusted by global brands to deliver technology and transformation solutions that drive customer success. Our deep expertise enables our customers to navigate the rapidly evolving technology landscape. We foster strong partnerships with global technology leaders including Microsoft, AWS, Oracle, Red Hat, OutSystems, Snowflake, ensuring that our customers are provided with the highest quality solutions and services. We’re an award-winning employer reflecting how our employees are at the very heart of what we do: UK & Ireland's premier AWS, Microsoft & Oracle partner 3300+ strong, €350/£300m revenue business 10+ years as a Great Place to Work in Ireland & UK Best Workplace for Women in the UK & Ireland by GPTW Best Workplace for Wellbeing in the UK by GPTW We’re a core values driven company, we hire people who share our values, and we reward those who display and foster them, it’s deeply embedded within our DNA. Invest in us and we’ll invest in you!. The Senior Network Security Engineer will provide technical leadership across the support, configuration, optimisation and continuous improvement of customer network security environments. The role requires a strong, demonstrable hands-on background in enterprise networking, firewalls and cloud/hybrid infrastructure, including Microsoft Azure networking. The successful candidate must be able to personally investigate, configure, troubleshoot and resolve complex technical issues, rather than relying solely on scripts, runbooks or other teams to complete the technical work. Support, configure, manage and optimise enterprise network security devices, including Palo Alto, Fortigate, Cisco firewalls and other customer-specific platforms. Act as a senior technical escalation point for complex Level 2/3 incidents, service requests, root cause analysis and major technical issues. Plan and deliver network and security changes in line with change management policies, ensuring appropriate risk assessment, testing, rollback planning and customer communication. Independently diagnose and resolve network and security issues through direct analysis of configurations, logs, packet flows, routing behaviour and platform diagnostics, escalating only when appropriate. Maintain, improve and assure technical documentation for customer network environments, including diagrams, configuration standards, operational procedures and support handover material. Provide hands-on support and configuration for Azure networking components, including VNets, subnets, network security groups, route tables, VNet peering, hub-and-spoke connectivity, VPN gateways and ExpressRoute-related network integration. Implement and improve network security tools, policies, standards and procedures in line with customer requirements, industry good practice and operational governance. Provide technical guidance to engineers, support knowledge sharing across the team and contribute to service improvement initiatives. Co-ordinate with vendors, customers and internal IT teams to drive issues to resolution and ensure clear ownership of actions. Proactively identify risks, recurring issues and opportunities to improve resilience, security posture, monitoring and operational efficiency. Technical skills and experience Minimum 8+ years’ relevant experience directly supporting, configuring and troubleshooting enterprise network and security technologies in hands-on operational roles. Strong hands-on experience with firewall platforms such as Palo Alto, Fortigate and Cisco, including policy management, NAT, VPNs, high availability, upgrades and troubleshooting. Able to demonstrate real-world hands-on configuration and troubleshooting experience, including situations where the candidate personally completed the technical work rather than only following scripts or coordinating delivery through another team. Cisco CCNP, Palo Alto PCNSE, Fortinet NSE or equivalent professional-level certification preferred. Strong understanding of routing, switching and enterprise network protocols, including BGP, OSPF, VLANs, STP, IPsec, SSL VPN and DNS/DHCP fundamentals. Experience supporting and configuring a range of network devices and technologies, including firewalls, switches, routers, load balancers, VPNs and monitoring tools. Experience operating in complex customer environments, including enterprise networking, data centre, cloud and hybrid environments, with practical Microsoft Azure networking experience across VNets, subnets, peering, network security groups, route tables, VPN gateways, ExpressRoute integration and hub-and-spoke designs. Ability to troubleshoot Azure and hybrid network connectivity issues using hands-on investigation, including effective routes, firewall policies, NSG rules, UDRs, DNS, VPN/ExpressRoute paths and end-to-end traffic flow analysis. Experience conducting network audits, health checks, configuration reviews and technical risk assessments. Excellent written and verbal communication skills, with the ability to explain technical issues clearly to customers, vendors and internal stakeholders. Beneficial skills and experience IT degree or equivalent combination of professional qualifications and practical experience. Experience across multiple network vendors, including Cisco, Palo Alto, Juniper, Fortigate, F5, Aruba or similar technologies. Experience with security controls such as IDS/IPS, network segmentation, remote access, vulnerability remediation and secure configuration standards. Experience with Azure-native network security and connectivity services such as Azure Firewall, Network Security Groups, VPN Gateway, ExpressRoute, private endpoints or similar cloud networking controls. Experience with automation, scripting or infrastructure-as-code tools to improve operational efficiency. ITIL foundation or practical experience working within ITIL-aligned service management processes. Ability to learn new technologies quickly and apply them in customer-facing operational environments. The Candidate: A senior, trusted engineer who can personally take ownership of complex technical issues, perform the hands-on investigation and configuration work required, and drive issues through to resolution. Decisive, calm under pressure and capable of delivering high-quality outcomes despite operational constraints. Conscientious, organised and able to prioritise work effectively with limited direction. Strong troubleshooting, analytical thinking and communication skills, with the confidence to engage directly with customers and stakeholders. Technically curious and confident working beyond scripted procedures, with the ability to interpret symptoms, validate assumptions, test safely and resolve issues using first-principles troubleshooting. Comfortable adapting their approach across varied customer environments, technologies and support models. Process-oriented with excellent attention to detail and a strong focus on documentation, governance and service quality. Willing to mentor and support other engineers, helping to improve technical standards across the team. Why Version 1? At Version 1, we believe in providing our employees with a comprehensive benefits package that prioritises their wellbeing, professional growth, and financial stability. Share in our success with our Quarterly Performance-Related Profit Share Scheme, where employees collectively benefit from a share of our company's profits Strong Career Progression & mentorship coaching through our Strength in Balance & Leadership schemes with a dedicated quarterly Pathways Career Development programme Flexible/remote working, Version 1 is tremendously understanding of life events and people’s individual circumstances and offer flexibility to help achieve a healthy work life balance Financial Wellbeing initiatives including; Pension, Private Healthcare Cover, Life Assurance, Financial advice and an Employee Disco