AWS Principal Cloud Architect

Principal Cloud Architect | Hybrid | £80,000-£100,000

About the Role:

We're partnering with a growing SaaS business to hire a Principal Platform Architect to own the design, security, reliability, and operational management of their AWS platform. This is a hands-on leadership role in a lean organisation where you'll shape cloud architecture, modernise a legacy platform into a cloud-native environment, and provide senior oversight across platform engineering, security, SRE, CI/CD.

Key Responsibilities:

Own the AWS platform architecture and modernisation roadmap, including migration from a Java monolith to microservices on EKS. Define standards for containers, runtime environments, observability, tenancy, security, and infrastructure automation. Lead SRE practices including SLI/SLOs, incident management, DR/BCP planning, post-mortems, and operational resilience. Own platform security, secure SDLC, CI/CD pipelines, IaC, and software supply chain governance. Drive developer productivity through automation, self-service tooling, and platform standardisation.

Act as a senior escalation point for critical incidents, outages, and operational issues.

About You:

Experience with in a platform, infrastructure, or software engineering within SaaS environments. Strong AWS expertise including EKS, IAM, networking, KMS, RDS, and multi-account architecture. Hands-on Kubernetes, CI/CD, Terraform, and cloud security experience. Strong understanding of SRE, observability, incident response, and disaster recovery. Experience operating within regulated environments such as ISO 27001, SOC 2, or GxP. Comfortable balancing strategic leadership with hands-on operational delivery.

AWS Solutions Architect - Professional certification required. CKA or CKS certification highly desirable. Principal Cloud Architect | Hybrid | £80,000-£100,000 Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy. To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.