Senior System Engineer

Description du poste

Join a dynamic team as a Senior System Engineer at ELCA! You'll enjoy a collaborative work environment with plenty of learning opportunities. Tasks Implement and maintain Microsoft-based environments like Windows Server. Administer virtualized environments to optimize performance and stability. Monitor infrastructure health and resolve potential issues proactively. Skills Experience with Microsoft ecosystem, VMware, and automation tools is essential. Strong troubleshooting and analytical skills are a must. Excellent communication skills and customer-oriented mindset are key. About the job Your Role As a Senior System Engineer, you will report to the team leader of the System Team in the Platform department. You will play a key technical role in the implementation, evolution, and operational stability of Microsoft-based infrastructure platforms, both internally and for our clients. You will act as a technical reference within the team, contributing to system design decisions, operational best practices, and continuous improvement of our services. In this role, you combine strong hands-on expertise with the ability to anticipate issues, standardize solutions, and collaborate effectively with engineers, architects, and customers. In the team you will oversee: Implement, maintain, and evolve Microsoft-based environments (Windows Server, Active Directory, WSUS, SQL Server, IIS, etc.) Administer and optimize virtualized environments (VMware ESXi, vCenter; VM lifecycle management) Design and optimize system architectures to ensure performance, scalability, and security Monitor infrastructure health and proactively identify and resolve potential issues Provide 2nd-level and advanced support, handling complex incidents and root cause analysis Automate operations using tools like PowerShell, Puppet, Rundeck, and Terraform Manage the lifecycle of Microsoft systems, ensuring they remain stable, secure and up to date Share knowledge and contribute to technical standards, documentation, and team best practices Our offer A pleasant working environment in a motivated team with solid expertise. A broad field of technology, from standard applications to micro-services on public clouds. An amazing work diversity ranging from small projects to wide programs. Intensive collaboration with ELCA engineers, experts, and managers as well as directly with customers from various business areas. Your profile You are passionate about technology; you learn constantly, and you love to master challenges in a changing environment. You see yourself as a senior engineer that can lead critical implementation and production system activities, that can efficiently solve issues and communicate your knowledge among engineers. You can detect and propose proactive actions to avoid that can arise from many aspects of the service. You like teamwork and constant interaction with customers, internal or external. Your expertise covers some or all the following: Windows Server and Microsoft ecosystem (AD, GPO, IIS, SQL Server, WSUS, RDS, DFS) Virtualization (VMware vSphere, proxmox) Backup solutions (Veeam) Networking fundamentals (DNS, DHCP, VPNs, firewalls, proxy, load balancers) Scripting and automation (PowerShell, python) Monitoring tools (CheckMK or similar) Infrastructure as Code / configuration management (Terraform, Puppet) Additional strengths: Exposure to public cloud platforms (AWS, Azure) Experience with Linux administration (Debian, RHEL) Strong troubleshooting and analytical skills Ability to document and share knowledge Customer-oriented mindset with good communication skills The position is based in Lausanne or Geneva. Excellent written and spoken French and English are required; proficiency in German is an asset.