Senior Network Engineer - Belfast

Job Title: Senior Network Engineer
Location: Belfast

Hybrid - 2 days onsite per week, remainder remote. (Will on occassion involve client visits in the NI region.)

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 life cycle, 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 (eg, 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.