<div class="show-more-less-html__markup show-more-less-html__markup--clamp-after-5 relative overflow-hidden"> <strong>About Us<br/><br/></strong>At aedifion, you will actively shape the future of energy-efficient building operations. Our mission is to make existing buildings smarter, more sustainable, and easier to manage making a real contribution to CO₂ reduction. You'll join an innovative tech company that uses cutting-edge technologies like IoT, AI, and cloud solutions to enable sustainable real estate. Our culture? Open, diverse, and team-oriented. With more than 100 colleagues from various nations, we combine a wide range of expertise and perspectives to achieve big things together.<br/><br/><strong>Your impact in this role:<br/><br/></strong>As a <strong>DevOps Engineer (f/m/d)</strong>, your mission is to ensure that aedifion's infrastructure and platform runs stably, scalably, and securely. You combine deep infrastructure expertise with a proactive mindset for security and automation, and together with our Senior DevOps Engineer, you play a key role in enabling development teams to work quickly and reliably — without infrastructure bottlenecks.<br/><br/><strong>What to expect:<br/><br/></strong><ul><li>Infrastructure Ownership: Take full ownership of the availability, scaling, and performance of the European cloud environment — including planning and executing updates, maintenance windows, and system upgrades in coordination with all stakeholders.</li><li>Kubernetes &amp; Platform Operations: Continuously operate and evolve the Kubernetes environment (k3s, Rancher) — including container management, networking (Cilium/CNI), and ensuring stability and scalability.</li><li>Automation &amp; IaC: Develop and maintain Terraform modules and Tanka/Jsonnet configurations, and systematically drive the automation of provisioning and deployment processes to sustainably reduce manual effort.</li><li>CI/CD Optimization: Optimize and maintain GitLab-based CI/CD pipelines, identify bottlenecks, and accelerate build and deployment processes for secure, reproducible deliveries.</li><li>Monitoring &amp; Observability: Continuously evolve the existing monitoring (Prometheus, Loki, Grafana) and observability landscape, define meaningful metrics and alerting strategies, and create proactive transparency about system states for both technical and non-technical stakeholders.</li><li>Security Management: Develop and implement secure base images, firewall rules, and network security concepts, and support penetration tests from preparation through to the sustainable resolution of findings.<br/><br/><br/></li></ul><strong>Benefits<br/><br/></strong><ul><li>Make a difference: Your work helps to reduce CO₂ emissions and make buildings more sustainable and energy-efficient.</li><li>Mobile work: Organise your working day according to your needs – with flexible working hours, short core working hours and the freedom to work from our modern office in Cologne, remotely from anywhere in Germany or up to 10 days a year from other European countries.</li><li>Stay active: With our Urban Sports Club membership, you have access to a wide range of sports and fitness offers – to help you recharge and stay healthy inside and outside of work.</li><li>Feel-good offer: With 30 days of annual leave, you can relax and unwind, while fresh organic fruit, regional coffee, free drinks and our monthly team breakfast provide you with your daily energy boost.</li><li>Further training: We support you with tailor-made training opportunities to advance your career.Tech stack: You will receive modern work equipment of your choice – whether Microsoft or Apple – as well as high-quality noise-cancelling headphones for focused work.</li><li>Mobility package: Always mobile: you can choose between the Germany Ticket or a Jobrad bike – for your commute or private use.</li><li>Pension provision: Subsidies for capital-forming benefits (VWL) or company pension schemes (bAV).</li><li>#teamaedifion: Regular team events, working on an equal footing, actively sharing experiences and flat hierarchies promote strong teamwork and open communication within our team.</li><li>Dog-friendly office: Bring your dog along – we look forward to some animal support.<br/><br/><br/></li></ul><strong>What You Bring:<br/><br/></strong><ul><li>Experience: Comprehensive expertise in independently managing production-critical DevOps or SRE environments — you have already successfully taken ownership of system stability, incident management, and maintenance window coordination.</li><li>Kubernetes &amp; Cloud: Deep, hands-on Kubernetes expertise (operations, troubleshooting, scaling — ideally k3s) as well as solid knowledge of cloud infrastructure including network configuration and VM provisioning.</li><li>Automation &amp; IaC: Proven track record in infrastructure automation with Terraform and CI/CD pipeline optimization (GitLab), as well as experience with scripting (Bash, Python) and config management tools (Tanka/Jsonnet or comparable).</li><li>Security &amp; Observability: Solid knowledge of cloud security practices (network segmentation, secure container images, firewall configuration) and demonstrated experience in building monitoring stacks (Prometheus, Loki, Grafana) including metrics design and alerting.</li><li>Way of Working: Structured, self-driven working style with strong problem-solving skills under time pressure — you make technical decisions independently and communicate impacts transparently to various stakeholders.</li><li>Languages: Fluent in both German and English, written and spoken, for effective team communication and technical documentation.</li></ul> </div>