Madeleine Anscomb de Acuna
Platform Reliability Engineering, Sre Manager @Vodafone
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WORK HISTORY
Platform Reliability Engineering, Sre Manager @Vodafone
London, GB
In my current role at VodafoneThree UK, I lead two platform engineering teams (20+ engineers), delivering secure, scalable multi-cloud platforms while partnering closely with Cyber Security to ensure compliance, availability, and resilience. Leading from within the team, taking on the hard problems and delivering impact and visibility whilst developing people and purpose.* Acted as a security and reliability leader during high-pressure commercial events (e.g, Black Friday, flagship iPhone/Samsung launches), aligning cross-functional teams and achieving 100% uptime while competitors experienced disruption.* Took full ownership of both AWS and Azure platform engineering functions, identifying and closing architectural and security gaps to support global adoption—delivered the Azure platform within 6 months.* Reengineered UK Platform Engineering team practices by defining cybersecurity responsibilities, streamlining knowledge sharing, and implementing team-driven security improvements—boosting productivity by 20%.* Partnered with Cyber Security to define joint ownership of Cloudflare and F5 WAFs, contributing to Vodafone’s security posture and audit readiness across services. As well as managing multiple pen test outcomes.* Led monthly FinOps security-aligned reporting across AWS, Azure, and Datadog environments—resulting in a 23% year-on-year cost reduction while ensuring secure service operation.* Championed professional development with a strong security and compliance focus, resulting in 6 new certifications and 3 internal promotions.* Recognised with the Cloud Engineering Leadership Award for cross-functional influence and security-forward innovation within 6 months.Currently undertaking CISSP and ISO 27001 training.
EDUCATION
University of Nottingham
Bachelor of Applied Science (BASc), Physics
SKILLS
ABOUT MADELEINE ANSCOMB DE ACUNA
With a strong background in cloud engineering, security leadership, and service reliability, I bring over a decade of experience managing complex, security-sensitive environments. As Site Reliability Engineering Manager at VodafoneThree UK, I lead multi-cloud platform teams across AWS and Azure, co-owning infrastructure and WAF security with Cyber Security partners. I’ve implemented scalable, secure platforms that underpin critical Vodafone services, including flagship product launches with 100% uptime, while streamlining audit compliance (ISO, PCI, SOC, FedRamp) and improving cross-functional security practices.My expertise spans security auditing, infrastructure-as-code (Terraform, Python), and governance alignment through AMI rotations and automated compliance pipelines. I actively engage in FinOps and risk-based security planning, saving costs while improving resilience. At SAP Concur, I led security-conscious migrations from F5 to NGINX+, achieving 99.99% uptime and securing global jurisdictions.I am highly effective in customer-facing roles, with experience managing stakeholders across public and enterprise sectors, including government systems. I deliver clear, actionable security reporting and guidance to both technical and non-technical audiences. My leadership style fosters trust, growth, and accountability—backed by technical depth and a history of security-forward delivery.I am ready to be the trusted single point of contact for customer security at Vodafone, ensuring excellence in service and compliance.Currently undertaking CISSP and ISO 27001 training.
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