Senior Network Engineer

Senior Network Engineer

Lewes, East SussexFull-Time | Permanent£42,000 – £46,000 per annum37 hours per week (Monday–Friday)

The Opportunity

We are looking for a Senior Network Engineer to join a well-established and dynamic internal IT team based in Lewes. Reporting to the Network Team Leader, you will play a key role in supporting and evolving a large-scale enterprise network estate.

This is a hands-on role, offering the opportunity to work across WAN, LAN, WLAN, and network security, while contributing to both operational support and project-based network improvements.

Key Responsibilities

• Maintain and support WAN, LAN, and Wireless LAN connectivity across multiple locations
• Deploy, configure, and support edge routers and security firewalls
• Contribute to the design and implementation of network solutions
• Monitor network health, performance, and overall environment stability
• Perform fault finding, troubleshooting, and root cause analysis
• Support development of network standards, configurations, and best practices
• Assist with hardware lifecycle planning and replacement strategies
• Produce and maintain clear technical documentation and procedures
• Work closely with vendors, suppliers, and internal stakeholders
• Provide on-site support and installations when required
• Ensure adherence to organisational policies and security standards

Skills & Experience Required

• CCNA (or equivalent certification) – essential
• CCNP – highly desirable
• Proven experience supporting enterprise-scale network environments
• Strong background with:
  • Firewalls & VPNs (Cisco ASA, Checkpoint)
  • Routing protocols & network design principles
  • WAN technologies and monitoring
  • Campus LAN and Wi-Fi networks
  • QoS in WAN/LAN environments
• Experience with SD-WAN (Arista preferred)
• Knowledge of Cisco wireless networks (Juniper exposure beneficial)
• Excellent network troubleshooting and diagnostic skills
• Experience using tools for traffic analysis, performance monitoring, and capacity planning

Personal Attributes

• Strong problem-solving mindset with attention to detail
• Ability to work independently and take initiative
• Comfortable working in a fast-paced, collaborative team environment
• Quick learner with the ability to apply new knowledge effectively
• Excellent communication and stakeholder engagement skills

Why Apply?

• Join a forward-thinking organisation with a modernising network environment
• Be part of a skilled and collaborative network team
• Opportunities to work with emerging technologies including SD-WAN and next-gen wireless
• Competitive salary and stable, long-term career opportunity
• Great benefits included