Principal DevOps Engineer — Remote/Hybrid, Kubernetes & CI/CD

Octostar; Galway; Hybrid; EUR 110,000 - 150,000; Full time

Benefits offered by this job

Competitive salary and equity

20 days annual leave

Flexible working arrangements

Job summary

Octostar is seeking a Principal DevOps Engineer to own the infrastructure, covering cloud and on-prem environments, Kubernetes clusters, release pipelines, and an air-gapped installer. The role involves design, implementation, day-to-day operation and documentation, reporting to the CTO.

You will lead hands-on work across CI/CD, security, observability, and cost management, collaborate with the DevOps team, and communicate with customers during installations and upgrades.

Qualifications

• Extensive experience designing, deploying and operating production Kubernetes clusters in cloud and on-premise.
• Track record of owning infrastructure from design through to production operation.
• Deep knowledge of Linux administration and networking.
• Experience managing infrastructure as code and building CI/CD pipelines.
• Proficiency in scripting (Bash, Python or similar).
• Experience troubleshooting production Linux systems and running a self-hosted observability stack (Prometheus, Loki or similar).
• Ability to write clear technical documentation.
• Excellent written and spoken English.
• Experience supporting customer IT teams during on-premise installations and upgrades.

Responsibilities

• Provision and maintain all environments from CI to production as infrastructure-as-code.
• Design, deploy and operate Kubernetes clusters in cloud and on-premise.
• Build and maintain air-gapped offline installer with all images and dependencies.
• Maintain build and release pipelines and local development setup.
• Operate private networks with controlled egress and monitor outbound traffic.
• Maintain monitoring, logging, tracing and alerting systems.
• Track infrastructure spend and size resources, including GPU capacity.
• Deploy and operate model endpoints and inference serving for AI workloads.
• Communicate with customers during installations and upgrades.
• Maintain architecture documents, a decision log and runbooks.

Skills

Kubernetes

Linux administration

Infrastructure as code

CI/CD pipelines

Scripting (Bash/Python)

Observability stack

Network security

Documentation

Customer communications

Cloud providers (AWS/Azure/GCP)

Tools

Prometheus

Loki

OpenSearch

RKE2/K3s

S3-compatible storage

Job description

Octostar is seeking a Principal DevOps Engineer to own the infrastructure, covering cloud and on-prem environments, Kubernetes clusters, release pipelines, and an air-gapped installer. The role involves design, implementation, day-to-day operation and documentation, reporting to the CTO.

You will lead hands-on work across CI/CD, security, observability, and cost management, collaborate with the DevOps team, and communicate with customers during installations and upgrades.