Senior Platform Engineer

You'll be joining the Hosting team, an integral component of the Smarsh Fabric, which is the platform that underpins our enterprise applications. The function is dedicated to enabling self-service, next-generation capabilities across the engineering org, ensuring long-term sustainability and innovation.

Responsibilities:

• Own and evolve robust runtime environments for enterprise workloads, spanning Kubernetes and cloud-native platforms.
• Drive the design and implementation of scalable, secure, and highly available hosting solutions, primarily built on Kubernetes.
• Foster a culture of continuous improvement, automation, and engineering excellence.
• Collaborate with cross-functional engineering teams and product management to align platform capabilities with business objectives.
• Ensure best practices in security, reliability, observability, and performance across the platform estate.
• Contribute to strategic planning and help shape the technical roadmap for the hosting function.
• Advocate for and embed platform engineering principles, including self-service, standardisation, and automation.

Requirements:

• Bachelor's degree in computer science, engineering, or a related field, or equivalent practical experience.
• At least 5+ years in platform teams or strongly DevOps-driven organisations.
• Excellent understanding of cloud platforms (AWS) - especially services such as EKS.
• Deep hands-on experience with Kubernetes, including cluster architecture, workload management, autoscaling, and production troubleshooting.
• Strong experience across the Kubernetes ecosystem, including Helm, Kustomize, Karpenter and containerisation.
• A solid background in Infrastructure as Code (e. g., Terraform) and maintaining CI/CD-driven deployment workflows.
• Proficiency with Git, including repository management, automation, and workflow configuration.
• Strong scripting skills (e. g., Bash) for automation and operational tooling.
• Application development experience in Java, with knowledge of Spring Boot considered a significant plus.
• Experience designing and operating Kubernetes clusters at high scale across large, multi-cluster environments (e. g., hundreds of clusters).
• Sound general security awareness and experience embedding security best practices into CI/CD and production platforms.
• Experience designing and operating observability stacks to support large-scale, multi-cluster Kubernetes environments - preferably using Grafana/Prometheus.
• Strong communication and collaboration skills, and the ability to work effectively with stakeholders across the organisation.
• Strong problem-solving skills and attention to detail.

Desirable Skills:

• Experience designing and building Kubernetes controllers and operators, including the use of controller frameworks.
• Good understanding of RESTful API design principles, with hands-on experience developing and maintaining APIs for internal audiences.
• Experience implementing and promoting platform engineering practices/culture, including self-service capabilities.
• Experience working in regulated environments and building compliant workloads is a plus.
• A software engineering background where you've transitioned into platform engineering is of interest.