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Barclays Logo Barclays · IT - Administration

Public Cloud Network Lead

United Kingdom, London · Job Posted June 16, 2026
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Job Description

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.

Job Responsibility

  • architect, implement and operate enterprise-grade multi-cloud network infrastructure at scale for Barclays
  • design secure, high-performance hybrid and multi-cloud architectures connecting thousands of cloud accounts across global regions to Barclays' on-premises infrastructure
  • work horizontally across GTIS Networks, SRE, DevOps, Product, and senior leadership to deliver strategic initiatives and resolve complex technical debt
  • mentor engineers and serving as the escalation point for critical network incidents
  • Build Engineering: Development, delivery, and maintenance of high-quality infrastructure solutions to fulfil business requirements
  • Incident Management: Monitoring of IT infrastructure and system performance to measure, identify, address, and resolve any potential issues, vulnerabilities, or outages
  • Automation: Development and implementation of automated tasks and processes to improve efficiency and reduce manual intervention
  • Security: Implementation of a secure configuration and measures to protect infrastructure against cyber-attacks, vulnerabilities, and other security threats
  • 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
  • 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

Requirements

  • 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

Nice to have

  • 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

What we offer

  • Competitive holiday allowance
  • Life assurance
  • Private medical care
  • Pension contribution
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