Senior Cloud Engineer I Cloud Platform London

We’re Checkout.com. You might not know our name, but companies like eBay, Spotify, Klarna, Uber, and Sony do, because we’re behind many of the digital experiences you use every day. We are where the world checks out, enabling over 10 billion transactions yearly for more than one billion global shoppers. Our platform helps the most ambitious businesses deliver effortless digital experiences, at scale.

If you want to do career-defining work, you’ve come to the right place. We move fast, think globally, and believe great teams are built by hiring exceptional people with conviction, curiosity, and the desire to make an impact. With 20 offices across six continents and London as our HQ, we’re shaping the future of fintech – and we’re just getting started.

Every payment we process runs on infrastructure we built. At Checkout.com, the Cloud Platform team owns the cloud foundations that global payments depend on: a large multi-account AWS estate, a growing Azure platform, and the networking and connectivity that reaches card schemes and banks worldwide. We are genuinely multi-cloud, and we are looking for a Senior Cloud Engineer who is too - a strong generalist who treats infrastructure as a software problem and can deliver from week one.

This is a hands-on senior role in an established, fast-moving team. Everything we run is defined in code, deployed through pipelines, and reviewed like software. You will bring deep cloud expertise across AWS and Azure and pair it with a genuine software engineering mindset: you write Terraform modules others build on, you automate away toil rather than documenting it, and you treat the platform as a product with users, SLOs, and a roadmap.

As a Senior Cloud Engineer, you are responsible for the technical delivery of your team's services. You will work closely with your Engineering Manager to shape direction, manage dependencies across pillars, and ensure our platform meets the standards a regulated payments business demands.

What we are looking for:

• Deep AWS expertise: Advanced, hands-on experience designing and operating production infrastructure in AWS at enterprise scale: multi-account architectures (Control Tower, Organizations, SCPs), IAM, KMS, and the core compute, storage, and security services that a large regulated estate runs on. Proven track record of delivering resilient, multi-region architectures.
• Azure experience: Real production experience with Azure alongside AWS: landing zones, VNet architectures, Entra ID, and the Azure resource and governance model. Ability to design well for both clouds.
• Software engineering mindset: Treat infrastructure as software. Expert-level Terraform: reusable modules, secure state management, and disciplined code review. Comfortable in a Git-based workflow with CI/CD.
• Strong cloud networking: Confident designing and debugging in a complex network estate: VPC and VNet design, hub-and-spoke and Transit Gateway or Cloud WAN architectures, DNS, private connectivity, and routing knowledge.
• Kubernetes: Solid experience running containerised workloads in production, ideally on EKS/AKS.
• Security and compliance awareness: Experience operating in regulated environments. Understanding of change control, least privilege, and auditability.
• Engineering excellence: Focus on observability and measurement.
• Leadership and mentorship: Ability to guide and mentor peers, translate ambiguous problem definitions into actionable technical plans.
• Pragmatic problem solver: Understand when to move fast and when to move right.
• Experience: 5+ years in cloud engineering roles with significant AWS depth.

How you’ll make an impact:

• Lead Design & Delivery: Take ownership of large-scale platform projects end to end.
• Build the paved road: Design the platform primitives that every product team builds on.
• Architectural Influence: Work with Engineering Managers and architects to refine requirements.
• Operational SME: Act as the Subject Matter Expert for numerous team-owned services.
• Evangelise Best Practices: Produce exemplary code and documentation.
• Manage Dependencies: Navigate the organisation to manage technical dependencies.
• Foster Culture: Embody Checkout Operating Principles.
• AI Integration: Proactively explore and implement AI-driven automation.

We create the conditions for high performers to thrive, through real ownership, fewer blockers, and work that makes a difference from day one. Here, you’ll move fast, take on meaningful challenges, and be recognised for the impact you deliver. It’s a place where ambition gets met with opportunity, and where your growth is in your hands.

We work as one team, and we back each other to succeed. So whatever your background or identity, if you’re ready to grow and make a difference, you’ll be right at home here.

Our hybrid working model offers flexibility, with three days per week in the office to support collaboration and connection.