System Administrator (OpenShift & Kubernetes)

Brown Brothers Harriman; Kraków; Hybrid; PLN 120,000 - 160,000; Full time

Benefits offered by this job

Private medical care

Life Insurance

Employee Assistance Program

Professional trainings and квалиficat…

Job summary

Brown Brothers Harriman (BBH) in Kraków is seeking a System Administrator to join the Infrastructure Strategy team. You will operate, maintain, and secure OpenShift/Kubernetes clusters, onboarding and supporting containerized apps, and building CI/CD pipelines.

The role requires strong Linux skills, Docker/Jenkins/Jira/Nexus experience, and readiness for on-call support. The position offers a hybrid work model with 3 days in the office and 2 days flexible, and BBH benefits including private

Qualifications

• Hands-on OpenShift admin in production

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 concepts

CI/CD knowledge

Linux administration

Scripting/automation

Git/Jenkins/Jira/Nexus experience

Communication & documentation

On-call readiness

Tools

Docker

Jenkins

Git

Nexus

Jira

Job description

At BBH, Partnership is more than a form of ownership-it's our approach to business and relationships. We know that supporting your professional and personal goals is the best way to help our clients and advance our business. We take that responsibility seriously. With a 200-year legacy and a shared passion for what's next, this is the right place to build a fulfilling career.

Join us as a System Administrator

Location: Kraków

Hybrid model: Hybrid model 3 days per week in the office /2 days for a parent of a child up to 4 years old

About the team:

We are looking for a System Administrator to join our Infrastructure Strategy team. In this role, you will operate, maintain, upgrade, secure, and monitor multiple OpenShift clusters and the services that support them. You will partner with application teams to onboard, deploy, troubleshoot, and maintain containerized applications, helping ensure a reliable, scalable, and well-governed platform.

In our team, you will be responsible for:

• 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

What we're looking for:

• 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 role-based access control
• 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

What we offer:

• To encourage cultural awareness and philanthropy, BBHers have 1 Culture Celebration Day and 1 Community Service Day in addition to their paid standard vacation allowance
• Private medical care
• Life Insurance
• Employee Assistance Program - offering independent and confidential counselling services for you and your family. You can get support for topics including family, marriage and relationships, finances, and legal issues.
• Professional trainings and qualification support
• Wellbeing Program
• Online Social Fund benefit platform
• Social, sport and integration events
• Onboarding Program for new hires

We value diverse experiences. We value diverse experiences and transferrable skillsets. If your career hasn't followed a traditional path, includes alternative experiences, or doesn't meet every qualification or skill listed in the job description, please do go ahead and apply.

About BBH:

Brown Brothers Harriman (BBH) is a premier global financial services firm, known for premium service, specialist expertise, technology solutions and partnership approach to client management. Across Investor Services and Capital Partners, we work with an enviable roster of sophisticated clients who make BBH their first call when they are tackling their hardest challenges. Delivering for our clients and each other energizes us. We believe that how we do our work is just as important as what we do. We are relentless problem solvers who know our best ideas come from collective debate and development-so we are never possessive about our ideas. Every day we come together as a diverse community of smart and caring people to deliver exceptional service a