Public Cloud Network Lead

Join us at Barclays as a Public Cloud Network Lead, to architect, implement and operate enterprise-grade multi-cloud network infrastructure at scale for Barclays.This role sits within our GTIS Public Cloud team as the Subject Matter Expert (SME) for cloud networking across AWS, Azure, and GCP — responsible for designing secure, high-performance hybrid and multi-cloud architectures connecting thousands of cloud accounts across global regions to Barclays' on-premises infrastructure. This is a hands-on technical role balanced with strategic planning and stakeholder influence. As a senior individual contributor, you will work horizontally across GTIS Networks, SRE, DevOps, Product, and senior leadership to deliver strategic initiatives and resolve complex technical debt — mentoring engineers and serving as the escalation point for critical network incidents.

Key Skills

• Multi-Cloud Network Architecture & Hybrid Connectivity – Lead enterprise-scale network design across AWS, Azure, and GCP, delivering hybrid connectivity, encrypted interconnects (MACsec/IPsec), circuit provider management, and legacy infrastructure remediation through Infrastructure as Code.

• Network Security & Compliance – Implement Zero Trust segmentation, deploy cloud-native firewall controls, and ensure compliance with PCI-DSS, DORA, and internal governance frameworks.

• Strategic Planning, Consultancy & Stakeholder Engagement – Define cloud network strategy, evaluate emerging technologies, produce ADRs and HLD/LLD designs, lead Landing Zone design, and influence senior stakeholders on risk, strategy, and cost optimisation.

• Operational Excellence & Incident Response – Own incident escalation, SLA/SLO monitoring, flow analysis, and SRE enablement to drive network operational excellence.

• Automation, IaC & DevOps Practices – Build reusable Terraform, CloudFormation, and Bicep IaC with CI/CD pipelines and Python/Bash automation for standardised network provisioning.

Desirable Skills

•  Cloud & Network Certifications – Professional/expert-level cloud certifications (AWS Certified Advanced Networking – Specialty, Azure Network Engineer Associate, Google Cloud Professional Cloud Network Engineer) and traditional networking certifications (CCNP Enterprise/Security, JNCIA/JNCIS).

• Kubernetes Networking & Service Mesh – Experience with Kubernetes networking (EKS, AKS, GKE), service mesh technologies (Istio/Linkerd), and CNI plugins (Calico, Cilium).

• FinOps & Cloud Cost Optimisation – Knowledge of FinOps principles, cloud cost attribution, and optimisation strategies.

• Zero Trust & Secure Connectivity Tooling – Familiarity with Zero Trust architecture tooling including Cisco Secure Workload (Tetration) and SD-WAN/SASE solutions (Zscaler).

• Advanced Networking & NetDevOps – Experience with HPC networking, RDMA, and low-latency workload requirements, combined with understanding of API-driven network management and NetDevOps practices.

This role is based in London

You may be assessed on the key critical skills relevant for success in role, such as risk and controls, change and transformation, business acumen strategic thinking and digital and technology, as well as job-specific technical skills

Purpose of the role

To build and maintain infrastructure platforms and products that support applications and data systems, using hardware, software, networks, and cloud computing platforms as required with the aim of ensuring that the infrastructure is reliable, scalable, and secure.  Ensure the reliability, availability, and scalability of the systems, platforms, and technology through the application of software engineering techniques, automation, and best practices in incident response. 

Accountabilities

• Build Engineering:  Development, delivery, and maintenance of high-quality infrastructure solutions to fulfil business requirements ensuring measurable reliability, performance, availability, and ease of use. Including the identification of the appropriate technologies and solutions to meet business, optimisation, and resourcing requirements.
• Incident Management: Monitoring of IT infrastructure and system performance to measure, identify, address, and resolve any potential issues, vulnerabilities, or outages. Use of data to drive down mean time to resolution.
• Automation:  Development and implementation of automated tasks and processes to improve efficiency and reduce manual intervention, utilising software scripting/coding disciplines.
• Security: Implementation of a secure configuration and measures to protect infrastructure against cyber-attacks, vulnerabilities, and other security threats, including protection of hardware, software, and data from unauthorised access.
• Teamwork:  Cross-functional collaboration with product managers, architects, and other engineers to define IT Infrastructure requirements, devise solutions, and ensure seamless integration and alignment with business objectives via a data driven approach.
• Learning: Stay informed of industry technology trends and innovations, and actively contribute to the organization's technology communities to foster a culture of technical excellence and growth.

Vice President Expectations

• To contribute or set strategy, drive requirements and make recommendations for change. Plan resources, budgets, and policies; manage and maintain policies/ processes; deliver continuous improvements and escalate breaches of policies/procedures..
• If managing a team, they define jobs and responsibilities, planning for the department’s future needs and operations, counselling employees on performance and contributing to employee pay decisions/changes. They may also lead a number of specialists to influence the operations of a department, in alignment with strategic as well as tactical priorities, while balancing short and long term goals and ensuring that budgets and schedules meet corporate requirements..
• If the position has leadership responsibilities, People Leaders are expected to demonstrate a clear set of leadership behaviours to create an environment for colleagues to thrive and deliver to a consistently excellent standard. The four LEAD behaviours are: L – Listen and be authentic, E – Energise and inspire, A – Align across the enterprise, D – Develop others..
• OR for an individual contributor, they will be a subject matter expert within own discipline and will guide technical direction. They will lead collaborative, multi-year assignments and guide team members through structured assignments, identify the need for the inclusion of other areas of specialisation to complete assignments. They will train, guide and coach less experienced specialists and provide information affecting long term profits, organisational risks and strategic decisions..
• Advise key stakeholders, including functional leadership teams and senior management on functional and cross functional areas of impact and alignment.
• Manage and mitigate risks through assessment, in support of the control and governance agenda.
• Demonstrate leadership and accountability for managing risk and strengthening controls in relation to the work your team does.
• Demonstrate comprehensive understanding of the organisation functions to contribute to achieving the goals of the business.
• Collaborate with other areas of work, for business aligned support areas to keep up to speed with business activity and the business strategies.
• Create solutions based on sophisticated analytical thought comparing and selecting complex alternatives. In-depth analysis with interpretative thinking will be required to define problems and develop innovative solutions.
• Adopt and include the outcomes of extensive research in problem solving processes.
• Seek out, build and maintain trusting relationships and partnerships with internal and external stakeholders in order to accomplish key business objectives, using influencing and negotiating skills to achieve outcomes.

All colleagues will be expected to demonstrate the Barclays Values of Respect, Integrity, Service, Excellence and Stewardship – our moral compass, helping us do what we believe is right. They will also be expected to demonstrate the Barclays Mindset – to Empower, Challenge and Drive – the operating manual for how we behave.