Site Reliability Engineer

About the team

The BKS (Booking Kubernetes Service) team builds and operates the internal Kubernetes platform underpinning hundreds of engineering teams at Booking.com. We run a large fleet of EKS and on-premises clusters across multiple regions. We try to treat operations as a software problem, when something is painful, we want to automate it; when something breaks, we learn from it.

The role

This is a hands-on operational SRE role focused on keeping the BKS platform healthy, up-to-date, and well-supported. You will spend most of your time on cluster maintenance, component upgrades, and helping internal engineering teams run their workloads successfully on BKS. You may also act as a consultant to product teams on Kubernetes best practices and reliability topics.

Day-to-day responsibilities

Cluster operations & maintenance

• Plan and execute Kubernetes version upgrades across EKS and on-premises clusters, coordinating with internal teams to minimise disruption

  
  

• Perform routine maintenance: add-on upgrades, storage and networking configuration, component upgrades for monitoring, security and other tooling

  
  

• Act on cluster health issues across the fleet and proactively work on degradation signals before they become incidents

Internal customer support

• Be the first point of contact for engineering teams running workloads on BKS: triaging issues, diagnosing failures, and guiding teams to resolution

  
  

• Help teams understand platform capabilities, quota management, and best practices for running reliable workloads. Evaluate quota requests and current usage requirements and weigh them against cluster capabilities.

  
  

• Contribute to runbooks and FAQs so common questions are answered before they become support requests

Toil reduction & automation

• Identify repetitive manual tasks and reduce them through scripting and automation

  
  

• Flag and address technical debt that slows down operations or increases risk

  
  

• Partner with the wider BKS team on tooling improvements that reduce the operational burden across the fleet

Required skills

• Kubernetes operational experience: node management, upgrades, debugging workloads, cluster health

  
  

• Experience with managed Kubernetes (EKS or equivalent) or on-premises cluster operations

  
  

• Comfortable with observability tooling: Prometheus/VictoriaMetrics, Grafana, alerting pipelines

  
  

• Strong written and verbal communication: clear in tickets, runbooks, and support threads

  
  

• Able to work independently, prioritise effectively, and keep commitments

Nice to have

• Terraform for infrastructure provisioning

  
  

• Puppet or similar configuration management for on-premises environments

  
  

• AWS experience

  
  

• Experience supporting internal developer platforms or infrastructure teams

What we expect

• Think Customer First: the engineering teams relying on BKS are your customers; their problems are your problems

  
  

• Own It: take issues through to resolution, raise blockers early, and follow through without needing to be chased

  
  

• Succeed Together: share knowledge, document what you learn, and make the team stronger for it

  
  

• Learn Forever: whether it’s a new technology or a Booking-specific tool, knowing how to tackle something unknown by asking the right questions

  
  

• Do The Right Thing: when something looks risky, an unsafe upgrade path, a coverage gap, a missed dependency, say so and help address it

What this role is not

… lees de volledige omschrijving bij Booking.com.