Platform engineer in on-prem infrastructure

As a Senior Platform Engineer, you will play a key role in executing the technical vision set by the Head of Infrastructure, with a strong focus on operating, stabilizing, and incrementally modernizing our on-premises infrastructure. The role balances hands-on ownership of existing platforms and legacy systems with the design and implementation of new, more automated and scalable capabilities.

• Introduce and operate Kubernetes-based workloads where appropriate, integrating them with existing on-prem infrastructure and operational processes.
• Incrementally modernize the platform by gradually migrating suitable services and workflows toward containerized and declarative approaches, without disrupting existing production systems.
• Design and evolve hybrid operational models, where legacy VM-based services and Kubernetes workloads coexist and are supported consistently.
• Operate, maintain, and incrementally modernize on-premises infrastructure and platforms, ensuring availability, security, and performance.
• Own day-to-day operations, including troubleshooting, patching, upgrades, and capacity management across Tomcat/Apache applications, PostgreSQL, and supporting services.
• Manage and evolve configuration management with Puppet and Ansible, ensuring consistent, secure, and auditable system changes.
• Operate and support Ceph storage, including capacity monitoring, performance analysis, and remediation of failures.
• Design, build, and operate internal platforms and shared services for application deployment and runtime operations, spanning VM-based and newer platform components.
• Support and execute application releases, working with both manual and automated processes and continuously improving reliability and repeatability.
• Build and maintain automation and tooling, primarily in Python, to reduce manual effort and improve operational consistency.
• Implement and operate monitoring, alerting, and incident response, using Zabbix and related observability tooling.
• Participate in an on-call rotation (weekends included), handling incidents, performing root-cause analysis, and driving corrective actions.
• Identify and address operational risks and improvement opportunities across application runtime, databases, storage, and CI/CD tooling.
• Ensure security, compliance, and audit requirements (ISO 27001, SOC 2, GDPR, etc.) are embedded into daily operations and system configurations.
• Maintain operational documentation, runbooks, and release procedures to support consistent execution and on-call readiness.
• Evaluate tools and automation with a pragmatic, on-prem-first approach, recommending changes that improve stability, security, and maintainability.

• Fluent in English (written and spoken).
• Practical experience with Kubernetes, including introducing and operating it incrementally in on-prem environments alongside existing platforms.
• Experience using Terraform for infrastructure-as-code to manage shared services and infrastructure components in a controlled, versioned manner.
• Hands-on experience operating on-prem Linux infrastructure in production, with ownership of availability, performance, and reliability.
• Strong experience with configuration management using Puppet and Ansible.
• Production experience operating and troubleshooting Apache and Tomcat application stacks.
• Solid operational experience with PostgreSQL, including administration, backups, performance considerations, and incident support.
• Hands-on experience operating Ceph storage, including capacity management, performance analysis, and failure handling.
• Experience supporting CI/CD and release processes, ideally using GitLab, across both manual and automated workflows.
• Familiarity with artifact repositories such as Artifactory.
• Strong automation and scripting skills, primarily using Python.
• Experience implementing and operating monitoring and observability tooling such as Zabbix and Grafana LGTM stack.
• Experience participating in on-call rotations, incident response, root-cause analysis, and remediation.
• Solid understanding of on-prem networking concepts, including VLANs, load balancing, firewalls, and DNS.
• Familiarity with security and compliance requirements in regulated environments, including certificate management, TLS, and auditability.
• Experience improving and operating release and change management processes in production systems.
• Ability to produce and maintain clear operational documentation and runbooks for day-to-day operations and on-call support.
• Demonstrated ability to integrate legacy systems with modern platform approaches without disrupting production workloads.
• Будет плюсом: German language skills are a plus; Elastic Stack knowledge a plus

• 25 Days of Vacation: Recharge and thrive with above-market holiday time, reflecting our people-first approach to work-life balance.
• Empowered to Make an Impact: Every voice matters—you're encouraged to drive improvements, contribute ideas, and create real value from day one.
• Learn from the Best: Grow your skills in a high-performing, international team of experienced and talented professionals.
• Meal allowance, health insurance coverage, and public transportation allowance.
• Work for a company committed to sustainability—our data centers operate climate-neutral.