RedHat OpenShift Application Administrator

Why are you looking for a job?

If your answer ticks all the boxes, this could be the start of a great collaboration.

• You have a curious mind - You won't understand what we're talking about if you don't 🤔
• You want to learn more around technology - You won't survive if you don't 😱
• You want to make the world a bit better - We don’t like you if you don’t 😎

We happen to be just like that as well. We like hacking things here and there (you included) and create scalable solutions that bring value to the world.

SquareDev? 🐿️

We use state-of-the-art technology to build solutions for our customers and our partners' customers. We make sure we stay best-in-class by participating in research projects across Europe, collaborating with top universities and enterprises on AI, Data, and Cloud.

About QnR Group

SquareDev is a member of the QnR Group, a leading technology organization specializing in end-to-end custom software solutions, Artificial Intelligence, Cybersecurity, SAP S/4HANA, SAP Business One, ServiceNow, and FinTech solutions.

As part of QnR Group's ongoing expansion — both in Greece and internationally — we are continuously hiring across a wide range of tech roles. Successful candidates may be hired by QnR Group, or another company within the Group, depending on the role and project.

Role overview

We're looking for a RedHat OpenShift Application Administrator to join a project with one of our public-sector clients in Warsaw and to own the lifecycle of applications running on OpenShift — from deployment and exposure to security, scaling, and day-to-day support. You'll partner closely with development teams to keep applications reliable, secure, and production-ready.

The ideal candidate will be responsible for:

• Deploying and maintaining containerized applications on OpenShift (Helm, templates, Operators).
• Managing namespaces and projects — RBAC, quotas, limit ranges.
• Configuring application exposure and routing (Routes, Services, TLS).
• Implementing application security (SCCs, Pod Security, Network Policies, secrets).
• Scaling and optimising applications, troubleshooting performance issues.
• Supporting dev teams with pod troubleshooting, logs, rollbacks.
• Monitoring application health and maintaining documentation/runbooks.

To excel in this role, you'll need:

• At least 7 years of relevant IT professional experience with at least 3 years in a similar position.
• Bachelor’s or Master’s degree in Computer Science, Engineering or a related technical field.
• RedHat Certified OpenShift Administrator or equivalent internationally recognized certification.
• Strong knowledge of YAML, Helm charts, and OpenShift templates.
• Experience with Routes, Services, Ingress, and TLS configuration.
• Experience implementing Network Policies and Security Constraints.
• Experience with monitoring/logging using OpenShift tools, Prometheus, and Grafana.
• Hands-on experience with GitOps/ArgoCD and CI/CD pipelines (Jenkins).
• Scripting and automation skills in Ansible, Python, and Helm.
• English at B2 level (CEFR) or higher.