Network Designer - Fortinet SD-WAN

BT; Southampton; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

A leading telecommunications company is seeking an experienced Network Designer to create transformative network architectures. This hybrid role, located in the UK, requires proven expertise in network design and knowledge of modern technologies. The successful candidate will work directly with influential clients, ensuring scalable solutions that meet their unique needs. The position offers competitive pay and comprehensive benefits, fostering an inclusive and collaborative culture.

Benefits

Competitive salary

Pension plan

Generous annual leave

Inclusive family leave policies

Flexible benefits

Training and development opportunities

Discounted broadband and mobile packages

Qualifications

• Proven experience in network design, ideally with enterprise or public sector clients.
• Strong knowledge of modern networking technologies.
• Excellent problem-solving skills and a passion for tackling complex technical challenges.

Responsibilities

• Design and implement innovative network solutions tailored to major UK clients.
• Optimise network performance for enterprise-grade applications.
• Drive a consultative approach by engaging with clients.

Skills

Network design

Fortinet SD-WAN

WAN/LAN

WiFi

Problem-solving

Communication

Education

CCNA

CCNP

Tools

FortiGate

FortiManager

FortiAnalyzer

Job description

Overview

Are you an experienced IT Network Designer?

Job Title: Network Designer

Location: UK (Hybrid - 3 days in office, 2 flexible)

At BT, we’re not just building networks—we’re shaping the future of connectivity for the UK’s biggest and most ambitious clients. Our Network Design function is experiencing explosive growth, driven by demand from top-tier public and private sector organisations who trust us to deliver cutting-edge, scalable solutions. From revolutionising digital infrastructure for global enterprises to powering critical public services, our work keeps the nation connected and thriving.

This is your chance to join a dynamic team at the forefront of innovation, where your expertise will directly impact the UK’s most influential businesses and institutions. As a Network Design Specialist, you’ll design transformative network architectures, tackle complex challenges, and collaborate with industry leaders to redefine what connectivity means. If you’re passionate about creating solutions that make a real difference, we want you to help us lead the charge.

Responsibilities

• Design and implement innovative network solutions tailored to the needs of major UK clients.
• As a design specialist you will promote what we do and understand the customers’ needs to relevant solutions.
• Optimise network performance to ensure reliability and scalability for enterprise-grade applications.
• Stay ahead of industry trends to drive continuous improvement and innovation in network design.
• Drive a consultative approach by engaging with clients to understand their unique needs, providing tailored network design solutions, and fostering long-term partnerships to ensure strategic alignment and success.

Qualifications

• Proven experience in network design, ideally with enterprise or public sector clients.
• Strong knowledge of modern networking technologies – Fortinet SD-WAN, WAN/LAN, WiFi
• Fortinet SD-WAN Certifications (Preferred):
  • FCSS – Network Security (SD-WAN Focus): Expertise in deploying and managing Fortinet Secure SD-WAN solutions. Requires FCSS – Secure Access Service Edge and FCSS – SD-WAN 7.4 Architect exams.
  • NSE 7 – SD-WAN 7.2: Validates skills in configuring and troubleshooting Fortinet SD-WAN features. Requires NSE 4 certification.
  • FCP – Network Security: Includes SD-WAN knowledge, focusing on FortiGate administration and FortiManager/FortiAnalyzer specialization. Requires NSE 4 certification.
• Excellent problem-solving skills and a passion for tackling complex technical challenges.
• Ability to communicate effectively with technical and non-technical stakeholders.
• Certifications: CCNA and CCNP.

Why BT?

At BT, we entertain, educate, and empower millions of people every single day. As a brand built on connecting people—whether it’s friends, family, businesses, or communities—you’ll be part of a dynamic team with a clear purpose. Here, you’ll receive an attractive salary and a comprehensive benefits package. More than that, you’ll join an ambitious organization with a culture of togetherness, collaboration, and inclusivity, where your progress and development are genuinely valued.

Benefits

• A competitive starting salary embedded in a comprehensive total rewards package, including a 10% on-target bonus.
• Pension plan: Contribute 5%, and BT will contribute 10%.
• Generous annual leave: 25 days (plus bank holidays), increasing with service.
• Inclusive family leave policies: 18 weeks’ paid leave, and up to two weeks’ paid leave for carers, regardless of family structure.
• A wide range of flexible benefits, including cycle-to-work, private healthcare, season ticket loans, and retail discounts, including our BT shop.
• World-class training and development opportunities in an inclusive environment.
• Discounted broadband, mobile, and TV packages, including Discovery+ and TNT Sports.