Enterprise Architect Principal

BT Security; Bristol; On-site; GBP 80,000 - 100,000; Full time

Job summary

A leading telecommunications company in Bristol is seeking a Principal Enterprise Architect. This role involves providing senior technical leadership for complex accounts, focusing on designing high availability network services and acting as the primary customer interface at the CIO level. The successful candidate should have industry qualifications and experience in architecture for critical infrastructure, strategic thinking, and inclusive leadership.

Benefits

15% on target bonus

BT Pension scheme

25 days annual leave

Flexible benefits including cycle to work and healthcare

World-class training and development opportunities

Discounted broadband and retail discounts

Equal family leave

Qualifications

• Experience in the architecture of systems for Critical National Infrastructure.
• Knowledge of design, testing, and assurance of highly available networks.

Responsibilities

• Act as primary customer interface up to CIO for technical design aspects.
• Maintain a 3+ year solution roadmap in collaboration with key decision makers.
• Accountable for successful technical delivery focusing on time, cost, and quality.

Skills

Network Architecture

Inclusive Leadership

Strategic Thinking

Communication

Business Strategy

Education

Industry qualifications in architecture and security

Job description

Overview

Job Req ID: 51842

Posting Date: 25/09/2025

Location: Bristol

Salary: Competitive + Benefits

Why this job matters

The Principal Enterprise Architect (EA) is the Senior Technical Leadership role aligned to a single major account or to multiple accounts (typically within a sub-vertical). These are the largest and most complex accounts for BT Business and therefore highly visible. Depending on the account, the focus of the role may be pre-sales, delivery, in-life or a combination.

The holder will demonstrate proficiency and experience in the architecture of systems used for UK Critical National Infrastructure. They will connect the people, process, technology and security domains when designing very high availability network services. The holder is expected to hold industry qualifications appropriate to delivery of complex solutions and delivery programmes for example communications services certifications, project and programme delivery, cyber security and/or service design.

Knowledge of design, testing and assurance of highly available networks is required. The holder will be expected to work within regulated environments and should have experience in the preparation and presentation of evidence required to demonstrate design suitability to the appropriate regulators. The key purpose of the role is to enhance the customer experience and drive profitable growth. The EA is the customers Trusted Advisor on technology and design and as such become an integral part of customer's matrix technical leadership team, creating value through the exploitation of technology across complex multiple platforms and/or technology areas.

What you'll be doing

The EA is the primary customer interface up to CIO level for all technical design aspects of BT's solution. Specifically:

• Be part of the Client Partner leadership team and align personal goals with the account targets, demonstrating how you are contributing to revenue generation, cashflow, EBIT and on time delivery
• Maintain a 3+ year solution roadmap co-created with the customers key decision makers and stakeholders. The road map draws on the customer's business drivers, industry trends and BT's Repeatable product and solutions portfolio and building blocks. The roadmap is the key artifact driving the account development plan
• Accountable for successful technical delivery of all account activity with a specific focus on time, cost and quality
• Provide leadership to the operational teams in moments of major customer jeopardy
• Ensure technical risks and issues that could impact the service are owned by the appropriate players
• Create, own and execute regular governance forums - at least quarterly - with the Account Director and VP Technical Design to evidence continuous progress against personal goals and account goals
• May lead a sub-vertical and support the wider team in developing opportunities
• Generate revenue, (SoV, ICV, etc.) as directed in goals/object

The skills you'll need

• Network Architecture
• Inclusive Leadership
• Strategic Thinking
• Communication
• Business Strategy

Benefits

At BT, we entertain, educate, and empower millions of people every single day. We're a brand built on connecting people - whether that's friends, family, businesses, or communities. Working here, you'll receive an attractive salary and a range of competitive benefits, but - more than that - you'll be joining an ambitious organisation with a culture of togetherness, collaboration, and inclusivity, that takes a genuine and proactive interest in your progress and development.

• 15% on target bonus
• BT Pension scheme, minimum 5% Employee contribution, BT contribution 10%
• 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 and access to 100's of retail discounts including the BT shop
• Equal family leave: receive 18 weeks at full pay, 8 weeks at half pay and 26 weeks at the statutory rate. It's for all parents, no matter how your family is made up!ives through customer sales

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.

A FEW POINTS TO NOTE

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.

We will also offer reasonable adjustments for the selection process if required, so please do not hesitate to inform us.

DON'T MEET EVERY SINGLE REQUIREMENT?

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.