Senior Network Engineer - Belfast

Job Description

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.

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