Senior IT Infrastructure & Cloud Engineer (m/f/d)

Shape the utilities market of the future with us! 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. Your Role at a Glance 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, PowerShell, Bash, or Python. Linux & server operations 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. Jira Cloud & Microsoft 365 Administer and govern Jira Cloud, including projects, workflows, permissions, roles, automations, integrations, marketplace applications, and license usage. Support Microsoft 365 and Entra ID administration, including identity, access, MFA, RBAC, and integrations. Network & security 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. Support & documentation 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. Must-haves (to thrive in this role) 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. Azure & cloud migration Hands-on experience with Microsoft Azure, especially Azure VMs, networking, storage, monitoring, backup, Entra ID, RBAC, and security controls. Experience planning or executing cloud and infrastructure migrations. Linux, infrastructure & security Strong Linux administration experience, preferably with Ubuntu, Debian, or Red Hat-based systems. Practi