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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior IT System Engineer - **Company:** Rheinnetz Gmbh - **Location:** Köln, Germany (Remote available) - **Experience:** Expert - **Salary:** €72,000.0 - €98,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Cyber Security, Virtualization Technology, Data Logging, Information Technology - **Published:** August 18, 2026 - **Apply:** https://www.adzuna.de/details/5846348591 ## About the Role * You hold a bachelor's degree in (Business) Computer Science, have completed further training as a technician (m/f/d), or possess a comparable qualification * You have several years of professional experience in a comparable position * You are familiar with the operation of highly available server, storage, and virtualization platforms * You are well-versed in network and firewall architectures as well as IT/OT segmentation and zoning concepts * Technical security measures such as hardening, access control, and logging in IT/OT environments are part of your daily routine * Ideally, you already have experience with KRITIS control systems as well as availability, redundancy, and failover concepts in security-critical environments * Strong knowledge of Microsoft 365 rounds out your profile ## Description As an employer, we offer varied and responsible roles, performance-based compensation, and excellent benefits. Our employees work in an attractive professional environment with opportunities for individual development, a modern corporate culture, and flexible, hybrid work models that include working from home., * You will ensure the stable, secure, and highly available operation of our IT infrastructure as well as our central platform, network, server, storage, and core services. * As a technical point of contact (m/f/d), you are responsible for the entire lifecycle of business-critical infrastructure components-from design and implementation to operation and continuous optimization. * Together with the team, you will further develop modern infrastructure, platform, and architecture standards and ensure they align with company-wide technology, security, and architecture requirements. * You will plan, lead, and oversee challenging infrastructure, transformation, and migration projects, assuming overall technical responsibility for their successful implementation. * You will develop and evaluate technical concepts, solution designs, and target architectures, taking into account scalability, performance, availability, cost-effectiveness, and future-readiness. * You systematically analyze complex malfunctions and problems, derive sustainable solutions, and ensure their successful implementation. * You plan, evaluate, and manage changes, taking into account risks as well as agreed-upon availability, security, and stability requirements. * You evaluate new technologies, platforms, and architectural approaches in terms of technical suitability, integrability, operational reliability, and strategic value for the company. * In addition, you support the implementation of and compliance with information security, compliance, and governance requirements, and participate in technical audits and certification processes. * You will advise internal departments, project teams, and stakeholders on infrastructural, technological, and strategic issues and support well-informed decision-making processes. * You will create and maintain audit-proof and traceable technical documentation as the basis for operations, audits, quality assurance, and knowledge transfer within the organization. * In addition, you will manage, coordinate, and evaluate the services of internal and external service providers, monitor compliance with agreed-upon quality standards, and perform technical acceptance of results. * With your several years of experience, you will contribute best practices, methodological expertise, and technical know-how to projects, operational processes, and technology decisions, and support the continuous development of the infrastructure environment. ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Crypto-secure Data Management with In-Database Blockchain](https://www.wearedevelopers.com/videos/632-crypto-secure-data-management-with-in-database-blockchain) - [Fake or News: Translating Dog Barks, Notepad Gets an Upgrade and Michelin-Star Robots - Paul Tregoing](https://www.wearedevelopers.com/videos/1802-fake-or-news-translating-dog-barks-notepad-gets-an-upgrade-and-michelin-star-robots-paul-tregoing) - [Thinking Differently - How to Make Money from Cyber Attacks & Cheats](https://www.wearedevelopers.com/videos/745-thinking-differently-how-to-make-money-from-cyber-attacks-cheats) - [The Future of Recruiting: Innovations and Challenges in the European IT Sector](https://www.wearedevelopers.com/videos/1056-the-future-of-recruiting-innovations-and-challenges-in-the-european-it-sector) - [Build Delightful Mobile Experiences with Kotlin, Realm, and Atlas Device Sync](https://www.wearedevelopers.com/videos/694-build-delightful-mobile-experiences-with-kotlin-realm-and-atlas-device-sync) ## Related Articles - [Finding IT & Technology English-speaking Jobs in Germany ](https://www.wearedevelopers.com/magazine/446-finding-it-technology-english-speaking-jobs-in-germany) - [IT Salaries in Germany](https://www.wearedevelopers.com/magazine/287-it-salaries-in-germany) - [Finding Jobs in Germany](https://www.wearedevelopers.com/magazine/375-finding-jobs-in-germany) - [Jobs in Germany for Americans](https://www.wearedevelopers.com/magazine/423-jobs-in-germany-for-americans) - [System change: restart as developer?](https://www.wearedevelopers.com/magazine/39-system-change-restart-as-developer) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)