Senior Resilience Tester
Listed on 2026-01-12
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IT/Tech
Systems Engineer, Cloud Computing
Senior Quality Engineer – Platform Resilience & Scalability | Platform Engineering | UK - Remote
RLDatix(RLD) is on a mission to help raise the standard of care…everywhere. Trusted by over 10,000 healthcareorganisationsaround the world, our solutions help improve health and care. Our applications ensure that patients receive the best and safest care while supporting the providers who deliver it.
Joining
TeamRLDmeans being part of a global effort of over 2,000 team members in making a difference in healthcare…every day.
We’researching for a UK-based Quality Engineer – Platform Resilience & Scalability to join our Platform Engineering team, so that we can ensure our Internal Developer Platformremainsresilient, scalable, andhighly available across multiple global regions. The Quality Engineer will design and execute resilience and performance testing strategies to guarantee our platform meets a 99.95% uptime SLA and scales dynamically under demanding conditions.
How You’ll Spend Your Time- Design chaos experiments using tools like Chaos Mesh, Litmus, or AWS Fault Injection Simulator tovalidatefailure scenarios across EKS clusters and regions.
- Testauto-recovery mechanisms such as Karpenterautoscaling, pod restarts, and ALB failover in order to ensure platform resilience.
- Analyse performance bottlenecks in Kubernetes clusters, Istio service mesh latency, andGitOpspipeline throughput tooptimisesystembehaviour.
- Validate scalability by testing rapid scale-up scenarios and multi-region failover capabilities to support 3,000+ pods per cluster.
- Define and monitor
SLOs/SLIs for platform services using
Honey
Comb, Cloud Watch, and Prometheus tomaintainobservability and reliability.
- Strong experience in Kubernetes production environments (EKS preferred).
- Proven success in chaos engineering and resilience testing using major frameworks.
- In-depth knowledge of distributed systems failure modes and performance tuning.
- Sincere interest in building resilient, scalable platforms that power global healthcare solutions.
- A knack for working collaboratively within a fast-paced, cloud-native environment.
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