Lead Platform Engineer

Mastercard, Inc.; London; On-site; GBP 70,000 - 100,000; Full time

Job summary

A leading technology company is seeking a Lead Platform Engineer to optimize and support CDN services and DNS infrastructure. This role involves ensuring high web performance and security, demanding expertise in CDN platforms like Akamai, along with hands-on experience in network engineering. Join a team dedicated to delivering a seamless digital experience for users worldwide.

Qualifications

• 3+ years experience with Akamai ION or comparable CDN platform.
• Strong troubleshooting skills in DNS, DHCP, and CDN delivery.
• Familiarity with DNS/DHCP systems and managing configurations.

Responsibilities

• Configure and maintain Akamai ION/CDN services.
• Perform root-cause analysis for global web delivery incidents.
• Work cross-functionally with engineering and cybersecurity teams.

Skills

Network Engineering

Web Performance Optimization

Technical Troubleshooting

Akamai ION/CDN

Load Balancing Strategies

Tools

Infoblox

F5 GTM

Terraform

Ansible

Job description

Our Purpose

Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest potential.

Title and Summary

Lead Platform Engineer

Overview
The Global Routing and Edge Caching Services team is seeking a highly motivated and skilled engineer to join our Global Network Operations organization. This role is centered around the configuration, optimization, and operational support of Akamai ION/CDN services, as well as DNS/DHCP infrastructure and F5 GTM systems. You will help ensure Mastercard's global web traffic remains fast, secure, and highly available by managing content delivery policies, troubleshooting latency or delivery issues, and collaborating with key internal and external stakeholders.
Do you enjoy working on high-impact web and network delivery technologies?
Do you have deep operational knowledge of Akamai or similar CDN platforms?
Are you passionate about tuning web performance and solving DNS-related challenges in a fast-paced environment?
If so, we want you to be part of our high-performing engineering team helping to safeguard Mastercard's digital experience around the globe.

Role
In this position, you will:
• Configure and maintain Akamai ION/CDN services, including routing rules, cache optimization, certificate renewals, and delivery debugging.
• Perform root-cause analysis and triage incidents affecting global web delivery, often under tight SLAs.
• Define and maintain Akamai policies aligned with performance, security, and redundancy goals.
• Manage Mastercard's enterprise DNS/DHCP environment via Infoblox, including zone delegation, forwarding rules, DHCP scope configurations, and failover planning.
• Support and enhance F5 Global Traffic Manager (GTM) configurations for geo-aware load balancing and disaster recovery.
• Work cross-functionally with software engineering, cybersecurity, and product teams to design resilient and scalable content delivery strategies.
• Participate in on-call rotation for CDN/DNS support.
• Contribute to automation and Infrastructure-as-Code efforts where feasible (Terraform, Ansible, etc.).

All About You
• 3+ years of hands-on experience implementing and supporting Akamai ION/CDN or a comparable enterprise CDN platform.
• 3+ years of experience in network engineering, site reliability engineering, or web performance optimization.
• Strong technical troubleshooting skills across DNS, DHCP, CDN, or HTTP/S delivery chains.
• Familiarity with enterprise DNS/DHCP systems (Infoblox preferred) and experience managing zones, forwarders, and DHCP scope policies.
• Working knowledge of F5 GTM configurations and load balancing strategies.
• Experience with certificates, including renewals and automated deployment through Akamai or DNS validation.
• Self-starter with a passion for continuous learning and ability to mentor others on best practices.
• Excellent communication skills - able to present complex issues clearly to both technical and non-technical audiences.

Preferred: Akamai or F5 certification, Infrastructure as Code (e.g., Terraform or Ansible), scripting or API automation experience.

Corporate Security Responsibility

All activities involving access to Mastercard assets, information, and networks comes with an inherent risk to the organization and, therefore, it is expected that every person working for, or on behalf of, Mastercard is responsible for information security and must:

• Abide by Mastercard's security policies and practices;
• Ensure the confidentiality and integrity of the information being accessed;
• Report any suspected information security violation or breach, and
• Complete all periodic mandatory security trainings in accordance with Mastercard's guidelines.