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Senior Infrastructure Engineer
Company Description:
Cosine.sh – Fast-paced, venture-backed Silicon Valley startup
Job Description:
Join Cosine.sh as a Senior Infrastructure Engineer to own and evolve our core Kubernetes-based platform, deployment pipelines, and observability. You’ll design the “paved road” for engineers, researchers, and customers, ensuring reliability and security for demanding enterprise deployments. This high-ownership role directly shapes how we build and ship products.
Location:
London, UK
Why this role is remarkable:
* Take high ownership, shaping how Cosine.sh builds and ships products alongside founding engineers and leadership.
* Work at a fast-paced, venture-backed Silicon Valley startup, contributing to a rapidly evolving platform.
* Design and run the “paved road” for engineers, researchers, and customers, impacting core infrastructure from Kubernetes to deployment.
What you will do:
* Own the design, operation, and evolution of our Kubernetes-based platform, including cluster topology and autoscaling.
* Build and maintain robust CI/CD pipelines, implementing safe rollout strategies and fast rollback paths.
* Define and track SLOs, improve observability, and lead incident response to ensure system reliability.
The ideal candidate:
* 5+ years building and operating production infrastructure on a major cloud (AWS, GCP, or Azure).
* Significant hands‑on experience running Kubernetes in production, including cluster upgrades and multi‑environment setups.
* Deep experience with Infrastructure-as-Code tools like Pulumi, Terraform, or CDK.
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