Hybrid OpenShift & Kubernetes Sysadmin

Brown Brothers Harriman & Co.; Kraków; Hybrid; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Private medical care

Life Insurance

Employee Assistance Program

Professional trainings

Wellbeing Program

Onboarding Program

Culture Celebration Day

Community Service Day

Online Social Fund benefit platform

Social, sport and integration events

Job summary

Brown Brothers Harriman in Kraków is seeking a System Administrator to join our Infrastructure Strategy team. You will operate, maintain, and extend OpenShift and Kubernetes clusters, partnering with developers to ensure a reliable container platform.

The role includes monitoring, incident response, CI/CD pipeline automation, and support for platform services, with a hybrid work setup and ongoing opportunities to learn advanced technologies.

Qualifications

• Hands-on experience administering Red Hat OpenShift in production, including installation, upgrades, monitoring, and troubleshooting
• Strong knowledge of Kubernetes concepts and operations, including workloads, networking, storage, security, and RBAC
• Experience supporting containerized applications and working with Docker or other OCI-compatible container tools
• Proficiency with Linux administration and scripting or automation using tools
• Working knowledge of CI/CD and tools such as Git, Jenkins, Jira, and Nexus
• Strong troubleshooting and problem-solving skills across distributed systems, networks, and application platforms
• Ability to communicate clearly, collaborate with application and infrastructure teams, and maintain high-quality technical documentation
• Willingness to participate in an on-call rotation and to learn new platform technologies
• Preferred: Proficiency in deploying and supporting Kubernetes platform
• Preferred: Computer Science background and strong interest in working on highly technical systems

Responsibilities

• Install, configure, administer, patch, and upgrade OpenShift and Kubernetes clusters across their lifecycle
• Monitor cluster health, capacity, performance, availability, and security; identify risks and implement preventative improvements
• Provide day-to-day operational support for containerized applications, including onboarding, deployment, configuration, scaling, and troubleshooting
• Partner with development teams to migrate applications to the container platform and promote reliable operating practices
• Build, maintain, and improve CI/CD pipelines and automation for platform and application deployments
• Administer supporting platform services, including container registries, storage, logging and monitoring, Kafka/Strimzi, and OpenTelemetry for Splunk
• Manage platform access, certificates, secrets, networking, backup and recovery procedures, and configuration in line with security and compliance requirements
• Create and maintain accurate documentation, runbooks, architecture records, and operational procedures
• Investigate incidents and recurring problems, coordinate resolution of high-severity issues, and provide clear summaries to senior management
• Participate in an on-call rotation supporting production platforms and containerized applications

Skills

OpenShift administration

Kubernetes knowledge

Linux scripting/automation

Communication and collaboration

Documentation

On-call readiness

Tools

OpenShift

Kubernetes

Docker

Git

Jenkins

Jira

Nexus

CI/CD pipelines

Job description

Brown Brothers Harriman in Kraków is seeking a System Administrator to join our Infrastructure Strategy team. You will operate, maintain, and extend OpenShift and Kubernetes clusters, partnering with developers to ensure a reliable container platform.

The role includes monitoring, incident response, CI/CD pipeline automation, and support for platform services, with a hybrid work setup and ongoing opportunities to learn advanced technologies.