Senior DevOps Engineer – Application Operations (REF3937Y)

Company Description

The largest ICT employerin Hungary, Deutsche Telekom IT Solutions (formerly IT-Services Hungary, ITSH)is a subsidiary of the Deutsche Telekom Group. Established in 2006, the company provides a wide portfolio of IT and telecommunications services with more than 5000 employees. ITSH was awarded with the Best in Educational Cooperation prize by HIPA in 2019, acknowledged as one of the most attractive workplaces by PwC Hungary’s independent survey in 2021 and rewarded with the title of the Most Ethical Multinational Company in 2019. The company continuously develops its four sitesin Budapest, Debrecen, Pécs and Szeged and is looking for skilled IT professionals to join its team. 

Job Description

We are seeking an English speaking, skilled DevOps Engineer to manage and optimize the deployment, scalability, security, and automation of our cloud-native application running on Azure Kubernetes Service (AKS). The ideal candidate will have hands-on experience with CI/CD pipelines, Infrastructure-as-Code (IaC), container orchestration, monitoring, and cloud security best practices in an Azure environment.

Key Responsibilities:

Infrastructure & Automation:

• Design, implement, and maintain AKS clusters, ensuring high availability, scalability, and security.
• Develop and manage Infrastructure-as-Code (IaC) using Terraform, Bicep, or ARM templates.
• Automate deployment and configuration management using Helm charts, Kubernetes manifests, and GitLab
• Optimize networking, ingress, and service discovery in Kubernetes environments.
• Knowledge of Google Cloud, AWS is an advantage

CI/CD & Release Management:

• Build and maintain robust CI/CD pipelines using GitLab to enable seamless deployments.
• Automate containerized application deployments using Helm and Kubernetes operators.
• Manage Rolling deployment strategies to minimize downtime.

Monitoring & Security:

• Implement observability using Prometheus, Grafana, Azure Monitor, and Application Insights.
• Ensure logging and tracing with ELK stack
• Enforce security best practices including RBAC, network policies, and secrets management (Azure Key Vault, Kubernetes Secrets).
• Implement vulnerability scanning for containers and dependencies (e.g., Azure Defender or GitLab Vulnerability report).

Cloud & Performance Optimization:

• Optimize cost and performance of AKS workloads through auto-scaling, resource limits, and Azure Reserved Instances.
• Troubleshoot performance bottlenecks in Kubernetes and Azure networking components.
• Improve disaster recovery and backup strategies for stateful applications.

Qualifications

• 5+ years of experience for Senior in DevOps, SRE, or Cloud Engineering roles.
• Min. B2 English knowledge.
• Strong expertise in Kubernetes (AKS), Helm, and containerization (Docker).
• Experience with Azure cloud services (Azure DevOps, Azure Monitor, Key Vault, Networking, Storage).
• Proficiency in Infrastructure-as-Code (IaC) tools like Terraform or Bicep.
• Hands-on experience with CI/CD automation using Azure DevOps, GitHub Actions, or similar tools.
• Knowledge of monitoring, logging, and security best practices in cloud-native applications.
• Scripting skills in Python, Bash, or PowerShell.
• Experience with GitOps, ArgoCD, or FluxCD is a plus.

Preferred Certifications:

• Microsoft Certified: Azure Administrator Associate (AZ-104)
• Microsoft Certified: Azure DevOps Engineer Expert (AZ-400)
• Certified Kubernetes Administrator (CKA) (Optional but beneficial)

Additional Information

* Please be informed that our remote working possibility is only available within Hungary due to European taxation regulation.