Senior Software Engineer - Platform Engineering

Job Description

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The Direct to Consumer (DTC) Group is a technology company within Warner Bros Discovery. We are building a global streaming video platform (OTT), and a suite of applications to support all of our network's brands globally. We are building modern container-based micro-services operated on AWS. Our platform covers everything from search, catalogue, video transcoding, personalization, to global subscriptions, and  much more. We build user experiences ranging from classic lean-back viewing to interactive learning applications.  We build for connected TVs, web, mobile phones, tablets, and consoles for a large footprint of WBD owned networks including Max, Eurosport and discovery+. This is a growing, global engineering group crucial to WBD's future. 

We are hiring a Senior Software Engineer within the DTC Operational Engineering group with focus on Cluster Engineering. The team is dedicated to providing a secure, efficient and easy-to-use container runtime platform. We build automation for expanding to new markets, tenants and geographical regions, bootstrapping a fully featured container runtime ready for back-end development teams to use.

We team up with other platform teams, manage the lifecycle of critical platform components and work closely with SRE to improve the reliability and efficiency of the platform. We provide strategies and processes for lifecycle management of the container runtime environment. We own critical components, assess when we should introduce new ones and set the bar for quality. We focus on reducing security incidents while ensuring cost-effectiveness and supporting business needs.

Your Role Accountabilities...
• Operating Kubernetes clusters (version upgrades and managing critical Kubernetes components like Karpenter)
• Security vulnerability mitigations (rolling out security patches to Kubernetes nodes) and cost optimizations (scaling of our thousands of servers running hundreds of in-house built services, supporting millions of customers across the globe).
• As a Senior Software Engineer on the team, you will work with Kubernetes cluster operational tasks like upgrading the Kubernetes version. This includes performing an analysis of what is changing in the new version and how it affects the workload running on each cluster, e.g. deprecated k8s APIs and controller compatibility. You'll use tools to scan clusters to find things which need remediation, define actions for it, as well as execute them. As part of rolling out upgrades to hundreds of clusters, some ranging up to a thousand nodes, you will identify automation opportunities to reduce the amount of toil needed.
• To keep the runtime infrastructure secure you will roll out security patches to Kubernetes nodes (EC2 AMI updates) on a regular basis (PCI compliance demands new patches to be installed at least every 30 days) and help improve the automation tooling to eventually on an automated schedule.
• In order to keep our runtime cost low, you will take part in cost optimization efforts, like tweaking the Karpenter node scaling strategies, increasing the bin-packing efficiency of pods on nodes, ensuring the right node family type is used (m, c, r, spot and Graviton/ARM) and identifying over scaled infrastructure.
• To enable faster time to new markets and onboarding of new tenants to our streaming platform, you'll work on automating the creation of new Kubernetes clusters together with bootstrapping of critical platform capabilities like service mesh, deployment systems and the observability stack.

Qualifications and Experience...
• At least 1-2 years of Kubernetes experience.
• At least 1-2 years of AWS experience.
• At least 5 years of software development, infrastructure management or operations experience.
• Ability to write code for automation in Python, Bash or Golang.
• Experience designing infrastructure CI/CD pipelines, e.g. Jenkins or GitHub Actions.
• Experience with IaaC, preferably Terraform.
• Used to Helm templating for k8s manifests.
• Understanding of how GitOps tooling like ArgoCD or Flux works.
• Experience rolling out infrastructure changes to production by following a change management workflow.
• Know which metrics to monitor during a change rollout to identify problems.
• Strong ownership mentality during rollouts, stop/rollback and fix if problems occur or escalate to management/on-call if getting stuck.
• Strong sense of security, always using least privileges access and firewall configurations when needed for maintenance.
• Understanding of how running workloads on the Kubernetes clusters may be affected by cluster changes or node rotations.
• Willingness to talk to service development teams and understand their challenges when they report problems during maintenance windows.
• Ability to define and measure KPIs and honor SLAs for infrastructure maintenance.
• Experience with Git and GitHub PR workflows.
• Experience in working with Agile – Sprints, Epics/Stories, Jira.

#Li-Hybrid

Championing Inclusion at WBD
Warner Bros. Discovery embraces the opportunity to build a workforce that reflects the diversity of our society and the world around us. Being an equal opportunity employer means that we take seriously our responsibility to consider qualified candidates on the basis of merit, regardless of sex, gender identity, ethnicity, age, sexual orientation, religion or belief, marital status, pregnancy, parenthood, disability or any other category protected by law.

If you're a qualified candidate with a disability and you require adjustments or accommodations during the job application and/or recruitment process, please visit our accessibility page for instructions to submit your request.

Jobcode: Reference SBJ-r16kw0-13-59-58-61-42 in your application.