Senior IT Infrastructure & Cloud Engineer; m​/f​/d

Permanent / Full-time / Ilmenau, Erfurt or Leipzig - on site, especially during the first months / Start ASAP
We are looking for a Senior IT Infrastructure & Cloud Engineer to own and improve Cuculus’ IT infrastructure, Jira Cloud administration, Linux systems, operational security, and transition from VM-based hosting to Microsoft Azure.
This role combines hands-on infrastructure operations with architecture, automation, security, and cloud migration responsibilities. The successful candidate will help build a reliable, secure, and increasingly cloud-based IT environment.

Azure & cloud migration

• Lead the migration of selected virtual machines and services to Microsoft Azure.
• Design and maintain Azure infrastructure, including virtual networks, virtual machines, storage, identity, monitoring, backup, access controls, and cost management.
• Establish infrastructure-as-code and automation using tools such as Terraform, Bicep, Ansible, Power Shell, Bash, or Python.

• Maintain and support Linux servers, virtual machines, Docker environments, and internal services.
• Plan and perform operating system upgrades, security updates, patching, hardening, and lifecycle management.
• Monitor infrastructure health, capacity, availability, backups, performance, and security vulnerabilities.
• Establish reliable backup, restore, disaster-recovery, and business-continuity procedures.

• Administer and govern Jira Cloud, including projects, workflows, permissions, roles, automations, integrations, marketplace applications, and license usage.
• Support Microsoft 365 and Entra , including identity, access, MFA, RBAC, and integrations.

• Maintain secure connectivity, DNS, certificates, VPNs, firewalls, reverse proxies, and internal network services.
• Support security monitoring, logging, incident investigation, vulnerability remediation, and operational security controls.

• Provide advanced technical support and act as the escalation point for complex infrastructure and access issues.
• Document systems, dependencies, maintenance procedures, architecture decisions, and recovery processes.
• Coordinate with vendors and external service providers where required.

Experience & education

• Several years of experience in IT infrastructure, systems administration, cloud engineering, or IT operations.
• A degree in computer science or a related field, or an equivalent qualification.

• Hands‑on experience with Microsoft Azure, especially Azure VMs, networking, storage, monitoring, backup, Entra , RBAC, and security controls.
• Experience planning or executing cloud and infrastructure migrations.

• Strong Linux administration experience, preferably with Ubuntu, Debian, or Red Hat‑based systems.
• Practical experience with virtualization, Docker, networking, DNS, TLS certificates, SSH, firewalls, and backup systems.
• Strong understanding of patch management, least‑privilege access, secrets management, vulnerability remediation, and secure system design.

• Experience administering Jira Cloud and integrating Jira with other systems through APIs, webhooks, or automation.
• Familiarity with Microsoft 365 and Entra .
• Experience with scripting and automation using Bash, Power Shell, Python, Terraform, Bicep, or Ansible.

• Ability to troubleshoot independently and communicate clearly with technical and non‑technical colleagues.
• Strong documentation and change-management habits.

• You can work on…