Network Designer (Security)

BT Group; United Kingdom; Hybrid; GBP 60,000 - 75,000; Full time

Job summary

A leading telecommunications company in the UK is seeking a Network Designer specializing in Security to implement complex solutions across various technologies. The ideal candidate will have expertise in routing, switching, and security technologies, along with strong stakeholder management skills. This role offers a supportive environment with opportunities for professional growth and flexible benefits.

Benefits

10% on target bonus

25 days annual leave

Flexible benefits including healthcare

World-class training opportunities

Discounted broadband and retail discounts

Qualifications

• Maintain a professional persona and strong stakeholder management skills.
• Experience in defining and creating low-level design documentation.
• Candidates may require Security Clearance.

Responsibilities

• Capture detailed customer technical requirements for designs.
• Manage technical direction and solution design for customers.
• Oversee review and validation processes for new products.

Skills

Routing & Switching

Stakeholder management

Security Clearance knowledge

Configuration of routers and firewalls

Education

CCNP level qualification or equivalent experience

Job description

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Network Designer (Security)

Posting Date: 11 Aug 2025

Function: Service

Unit: Business

Location:

UK Wide, United Kingdom

Our team lead the way for implementing complex Voice, Network, Wireless and Security Solutions across a wide array of vendors such as Cisco, Fortinet, Juniper, Aruba and Microsoft and technologies such as SD-WAN, SD-A, ISE, ACI, Webex, MS Teams & NextGen FWs to name but a few.

We take High Level Designs into the Low Level detail at the Post-Sale stage, then implement said solution followed by thorough testing before handing over into the relevant support or managed service teams.

This role focuses on the Security technologies, so hands on experience configuring and troubleshooting routers, switches and firewalls strongly preferred. Knowledge of Wireless and Voice technologies will be deemed advantageous, as will any existing security clearance.

What you’ll be doing

• Captures detailed customer technical requirements and translation to detailed solution design in accordance with design methodologies.
• Manages and recommends on the technical direction and helps determine the optimum solution design for customers.
• Manages the review and validation processes for both new developments and in-life products and services, ensuring full integration across all aspects, considering the broad impact of solutions on the product roadmap.
• Drives the improvement of design and delivery capabilities for end-to-end technical solutions.
• Manages customer solution design engagement and statement of work creation, including any 3rd party deliverables.
• Facilitates the development of strong customer relationships at the senior level through providing specialist service design expertise, and influencing the customer's service strategy and operational decisions.
• Drives consistency in architecture and technical processes, with the aim of reducing costs and increasing productivity.
• Undertakes customer migration planning and implementation.
• Resolves complex solution and service issues, leads root cause analysis, troubleshooting and escalation.
• Pursues the identification of potential risks and the implementation of controls and mitigations, ensuring compliance with relevant industry and company policies.
• Ensures the delivery of thought leadership in complex bids and agreeing strategic approach as part of customer solution design.

What we would like to see from you

• Maintain a professional persona and exhibit strong stakeholder management skills; especially when a project may prove challenging.
• Be a team player by supporting colleagues and sharing knowledge whenever beneficial for current and future projects.
• Work closely and professionally with Pre-Sales, Project Management and Support colleagues.
• Understand the post-sale customer requirements as outlined by Pre-Sales, providing technical support and accountability throughout the implementation life cycle.
• Develop trusted customer relationships and deliver outstanding customer experience.
• A strong foundation in Routing & Switching, ideally with a CCNP level qualification or equivalent experience.
• Experience in defining and creating low level design documentation in line with customer requirements an advantage.
• Identifying and mitigating project risk at initial handover and during implementation
• Candidates may require Security Clearance or willing to work towards clearance to support projects.
• 10% on target bonus
• 25 days annual leave (not including bank holidays), increasing with service
• Huge range of flexible benefits including cycle to work, healthcare, season ticket loan
• World-class training and development opportunities
• Option to join BT Shares Saving schemes.
• Discounted broadband, mobile and TV packages
• Access to 100’s of retail discounts including the BT shop

With over 175 years of heritage, BT is now the flagship business brand of BT Group. We’ve brought together our best people and capabilities into a B2B powerhouse serving 1.2 million business customers internationally.

We’re a global leader for secure connectivity and collaboration platforms for businesses of all shapes and sizes, from big household names and government departments, right through to sole traders and new start-ups. But it’s not just the technology that matters, it’s what it can do to help them build stronger, smarter, more secure businesses.

We value diversity and inclusion and believe in making a positive impact. We connect for good by championing digital inclusion and equipping people, businesses, and communities with digital skills to thrive.

As a member of our team, you will be part of an organisation that celebrates difference, fosters innovation and provides you with opportunities to be your best. With millions of businesses relying on us daily, joining BT means you can be part of a diverse and multi-skilled team that makes a significant impact to society.

Although these roles are listed as full-time, if you’re a job share partnership, work reduced hours, or any other way of working flexibly, please still get in touch.

Studies have shown that women and people who are disabled, LGBTQ+, neurodiverse or from ethnic minority backgrounds are less likely to apply for jobs unless they meet every single qualification and criteria. We're committed to building a diverse, inclusive, and authentic workplace where everyone can be their best, so if you're excited about this role but your past experience doesn't align perfectly with every requirement on the Job Description, please apply anyway - you may just be the right candidate for this or other roles in our wider team.