Zero Trust – Delivery Lead

Barclay Simpson; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

Barclay Simpson is seeking a Delivery Lead to shape and implement a Zero Trust security model across a large, multi-divisional organisation in the UK. The role combines strategic leadership with hands-on delivery, engaging architects, engineers, and IT teams to deliver secure transformations.

You'll report to the Head of Cyber Transformation Programme and define the roadmap, ensuring adoption across federated landscapes while managing governance, budgets, and cross-functional dependencies.

Qualifications

• Proven experience leading enterprise Zero Trust strategy and delivery.
• Experience delivering large-scale cyber or technology transformation initiatives end-to-end.
• Experience operating within complex, federated, or multi-divisional organisations.
• Demonstrated success managing senior stakeholders, governance forums, vendors, and programme budgets.
• Ability to influence at executive level and sustain engagement across long-term transformation programmes.

Responsibilities

• Define and execute the enterprise Zero Trust strategy and adoption roadmap.
• Own the Zero Trust architecture across cloud, identity, endpoint, and network domains.
• Lead end-to-end programme delivery with governance and milestones.
• Manage budgets, vendors, and cross-functional dependencies.
• Engage senior stakeholders and drive adoption across divisions.

Skills

Enterprise Zero Trust

Stakeholder management

Executive engagement

Programme governance

Strategic leadership

Education

Degree in Computer Science, Cyber Security, Engineering, or related discipline

Tools

Entra ID

Microsoft Defender

Intune

Zscaler

PIM

Job description

Zero Trust Network Access Delivery Lead required to join the largest multi-year cybersecurity transformation in the UK. This is a high-impact leadership role responsible for shaping and delivering a Zero Trust security model across a complex international organisation operating across multiple divisions and geographies.

You’ll join a well-funded, multi-year transformation initiative focused on building modern cyber capabilities at scale. Working across enterprise architecture, identity, cloud, endpoint, and network security domains, you’ll lead the transition from traditional perimeter-based security to a modern Zero Trust approach where identity, device posture, and contextual access controls govern every interaction.

This role combines strategic leadership with hands-on programme delivery and is ideal for someone who can operate confidently at executive level while also engaging deeply with architects, engineers, and operational IT teams.

The Role

Reporting to the Head of Cyber Transformation Programme, the ZTNA Delivery Lead will define and execute the organisation’s Zero Trust strategy and roadmap.

You’ll be responsible for translating strategic objectives into practical architecture and scalable implementation plans, ensuring successful adoption across a highly federated and diverse technology landscape.

The role requires strong stakeholder engagement, programme governance expertise, architectural understanding, and the ability to lead large-scale transformation initiatives across multiple business units.

Key Responsibilities

Zero Trust Strategy & Roadmap

• Define and lead the enterprise-wide Zero Trust strategy and adoption roadmap
• Align Zero Trust initiatives with broader cyber security and technology transformation objectives
• Establish sequencing and dependencies across identity, network, device, application, and data security domains
• Secure executive sponsorship and stakeholder buy-in for strategic initiatives

Architecture & Blueprint Ownership

• Own and evolve the Zero Trust architecture across cloud, identity, endpoint, and network domains
• Develop scalable implementation blueprints, reference architectures, and governance models
• Ensure alignment with enterprise architecture standards and existing technology investments
• Continuously refine architecture and standards based on lessons learned and evolving business requirements

Programme Delivery & Governance

• Lead delivery of the ZTNA workstream end-to-end across strategy, design, and implementation phases
• Define milestones, delivery plans, stage gates, and measurable outcomes
• Manage budgets, vendors, delivery risks, and cross-functional dependencies
• Provide clear reporting and governance updates to senior leadership and steering committees

Stakeholder & Divisional Engagement

• Partner with divisional IT and security teams to drive adoption and implementation
• Influence senior stakeholders and maintain momentum across a complex organisational landscape
• Lead business adoption, communications, and change management activities
• Ensure rollout approaches minimise operational disruption and maximise user trust

Cross-Programme Collaboration

• Coordinate closely with identity, endpoint, cloud, and network transformation teams
• Manage dependencies across broader technology programmes including cloud migration, workplace transformation, and network modernisation
• Support operational transition into business-as-usual ownership models

Essential Experience

• Proven experience leading enterprise Zero Trust strategy and delivery programmes
• Strong track record delivering large-scale cyber or technology transformation initiatives end-to-end
• Experience operating within complex, federated, or multi-divisional organisations
• Demonstrated success managing senior stakeholders, governance forums, vendors, and programme budgets
• Ability to influence at executive level and sustain engagement across long-term transformation programmes

Technical Knowledge

• Deep understanding of Zero Trust principles across:
  • Identity & Access Management
  • Device Security
  • Network Security
  • Application Security
  • Data Protection
• Strong knowledge of Microsoft security technologies including:
  • Entra ID/Conditional Access
  • Privileged Identity Management (PIM)
  • Microsoft Defender
  • Intune
• Experience with ZTNA platforms such as Zscaler or equivalent technologies
• Strong architectural thinking combined with pragmatic delivery focus

Qualifications

• Degree in Computer Science, Cyber Security, Engineering, or related discipline (or equivalent experience)
• Relevant certifications such as:
  • CISSP
  • CISM
  • TOGAF
  • SABSA
  • Microsoft SC-100

Desirable Experience

• Experience within large enterprise, manufacturing, retail, FMCG, or operational technology environments
• Exposure to OT/ICS security challenges and Zero Trust implementation within mixed IT/OT estates
• Experience within consulting, managed services, or enterprise transformation environments
• Programme management certifications such as PRINCE2 or MSP