Senior Network Engineer

Auxilion Ireland Ltd; Belfast; Hybrid; GBP 55,000 - 60,000; Full time

Job summary

A technology solutions provider is seeking a Senior Network Engineer in Belfast. The role involves designing and supporting enterprise network solutions, ensuring outstanding technical service. Ideal candidates will have over 5 years in network engineering, relevant certifications, and strong skills in network security and design. The position offers a hybrid working model, competitive salary, and various benefits including a car allowance and health allowance.

Benefits

Car Allowance

Health Allowance

Annual Bonus (up to 10%)

Annual Leave 22 Days + NI Public Holidays

Qualifications

• 5+ years’ experience as a Senior Network Engineer or 8+ years as a Network Engineer in enterprise or government environments.
• Strong practical experience or valid certification in Cisco CCNP and CCSP.
• Proven capability in LAN/WAN/Wi-Fi networking and network security.

Responsibilities

• Design, build, and support complex network and security solutions.
• Provide technical leadership during project delivery and implementation.
• Optimize and maintain critical LAN, WAN, WLAN, and data centre network services.

Skills

Cisco Certified Network Professional (CCNP)

Cisco Certified Security Professional (CCSP)

Fortinet certifications (FCA, FCP, FCCS, FCX)

LAN/WAN/Wi-Fi networking

Cisco SDA, SNA, ISE, DNAC, ACI

Fortinet FortiGate, FortiSwitch, FortiWireless, FortiSASE

Network and perimeter security: Firewalls, IPS, SASE, ZTNA, UTM/UTP

MPLS, L2VPNs, Internet access technologies

Data Centre switching and campus design

Tools

Microsoft Office (Excel, Word, Visio, PowerPoint)

Job description

Job Title: Senior Network Engineer
Location: Belfast

Hybrid - 3 days onsite per week - Mon, Wed & Thurs, remainder remote.
Business Area: Network & Infrastructure Services
Reporting to: Operations Manager
Type: Full-time Perm

Salary - 55 - 60k £ neg. on experience.

Candidates must possess full working rights as sponsorship is not offered for this position.

Benefits:

• Car Allowance
• Health Allowance
• Annual Bonus (performance based discretionary - up to 10%)
• Annual Leave 22 Days + NI Public Holidays

Overview

Our client is seeking a highly skilled and motivated Senior Network Engineer to play a leading role in delivering, supporting, and enhancing enterprise network solutions for a diverse customer base. This role is instrumental in ensuring outstanding technical service, innovative solution design, and strategic input into network infrastructure projects.

As a trusted subject matter expert, the Senior Network Engineer will oversee the full solution lifecycle, from design and implementation to ongoing support, while mentoring junior team members and driving a culture of excellence and continuous improvement.

Key Responsibilities

• Act as a trusted advisor and subject matter expert across a portfolio of enterprise and government clients.
• Design, build, and support complex network and security solutions, aligned with customer requirements and industry best practices.
• Provide technical leadership during project delivery and change implementations, including documentation, test planning, and change control compliance.
• Optimise and maintain critical LAN, WAN, WLAN, and data centre network services.
• Implement and validate robust security configurations and ensure solutions meet industry standards and compliance requirements.
• Collaborate cross-functionally with internal teams, partners, and vendors on solution development and emerging technologies.
• Support 24x7 service operations through participation in on-call rotations and effective incident management.
• Produce high-quality design, operational, and technical documentation.
• Contribute to internal tooling, process improvements, and service innovation initiatives.
• Maintain current technical certifications and industry knowledge.
• Support customer engagement efforts with clear communication and relationship-building.

Essential Skills & Experience

• 5+ years’ experience in a Senior Network Engineer role OR 8+ years as a Network Engineer in enterprise or government environments.
• Strong practical experience or valid certification in:
• Cisco Certified Network Professional (CCNP)
• Cisco Certified Security Professional (CCSP)
• Fortinet certifications (FCA, FCP, FCCS, FCX)
• Proven capability in the following areas:
• LAN/WAN/Wi-Fi networking
• Cisco SDA, SNA, ISE, DNAC, ACI
• Fortinet FortiGate, FortiSwitch, FortiWireless, FortiSASE
• Network and perimeter security: Firewalls, IPS, SASE, ZTNA, UTM/UTP
• MPLS, L2VPNs, Internet access technologies
• Data Centre switching and campus design

• Experience working in complex, enterprise-grade IP environments.
• High level of proficiency with Microsoft Office tools, including Excel, Word, Visio, and PowerPoint.
• Strong verbal and written communication skills, with an ability to influence stakeholders.
• Commercial awareness and a solution-oriented mindset.
• Ability to work independently and within a team structure.

Desirable Skills

• Additional certifications such as:
• Cisco ENWLSD/ENWLSI
• Fortinet Expert/Professional Accreditation
• Experience with:
• SD-WAN, SD-Access
• Scripting and automation (e.g., Python, Ansible)
• Public cloud platforms (Azure, AWS, GCP)
• Carrier-grade network monitoring and management tools

Key Competencies & Indicators

Technical & Business:

• Strong technical expertise and design quality
• Innovation and adaptability to change
• Focus on delivering exceptional results and customer value

Customer & People:

• Trusted relationships and customer focus
• Team collaboration and interpersonal effectiveness
• Clear communication and knowledge sharing

This role offers an exciting opportunity to shape and support enterprise-grade infrastructure for a technology-forward organisation. If you’re passionate about networking, innovation, and delivering real-world impact, we want to hear from you.