Senior System Engineer

ELCA Informatique SA / ELCA Informatik AG; Indiana (PA); On-site; USD 80,000 - 110,000; Full time

Job summary

ELCA Informatique SA / ELCA Informatik AG is seeking a Senior System Engineer to manage Microsoft-based infrastructures and ensure operational stability. The role focuses on system implementation and evolution, requiring expertise in Windows Server, virtualization, and proactive issue resolution.

The position emphasizes strong teamwork, customer interaction, and offers a diverse working environment, alongside collaboration with skilled engineers and managers, serving clients across various industries.

Qualifications

• Experience with Windows Server, Active Directory, and SQL Server.
• Strong knowledge of virtualization and backup solutions.
• Proficient in scripting and automation with PowerShell.

Responsibilities

• Implement and maintain Microsoft-based environments.
• Administer virtualised environments and optimize architectures.
• Provide 2nd-level support and resolve complex incidents.

Skills

Windows Server and Microsoft ecosystem

Virtualisation

Backup solutions

Networking fundamentals

Scripting and automation

Monitoring tools

Infrastructure as Code

Tools

Veeam

PowerShell

VMware vSphere

Terraform

Puppet

Job description

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 optimise virtualised environments (VMware ESXi, vCenter; VM lifecycle management)
• Design and optimise 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)
• Virtualisation (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.