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Entry LevelFull-timeRustAzure
Salary Range
$44,880 - $60,720 /year
This salary is estimated based on similar roles. The actual salary may vary.
We are seeking a highly experienced Senior System Administrator to support and evolve our hybrid on‑premises and cloud infrastructure in a Geneva‑based, international environment. This role requires strong expertise in Microsoft technologies, Azure, identity and security services, and virtualization, with a high standard of reliability and professionalism.
The position plays a critical role in ensuring availability, security, and compliance of core IT services supporting business‑critical operations.
Key Responsibilities
• Design, implement, and maintain Windows Server environments (on‑premises and cloud)
• Administer and optimize Microsoft Azure infrastructure and services
• Manage and support Microsoft 365 / Office 365, including Exchange Online and collaboration services
• Administer Microsoft Entra ID (Azure AD), including hybrid identity, synchronization, conditional access, and authentication policies
• Manage Active Directory, ADFS, DNS, and core identity services
• Operate and maintain VMware virtualization platforms
• Administer Microsoft Exchange environments (on‑premises, hybrid, and/or cloud)
• Manage Public Key Infrastructure (PKI), including certificate authorities and trust models
• Ensure certificate lifecycle management (TLS/SSL, authentication, encryption) across servers, applications, and services
• Ensure high availability, backup, disaster recovery, monitoring, and capacity planning
• Troubleshoot complex infrastructure, identity, and authentication issues
• Apply security best practices in line with Swiss and international compliance requirements
• Participate in audits, risk assessments, and documentation efforts
• Collaborate closely with internal IT teams and international stakeholders
• Maintain clear technical documentation and operational procedures
• Provide technical leadership and mentoring to less experienced administrators
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About Vitol
Vitol is a global energy trading company specializing in the wholesale trading of crude oil, natural gas, refined products, and electricity. Headquartered in Geneva, Switzerland, with operations spanning Europe, Asia, and the Americas, Vitol has established itself as a major player in the international energy markets since its founding in 1986. The company operates at the core of the energy supply chain, facilitating the movement of energy resources from producers to consumers, and plays a significant role in shaping global energy flows and pricing dynamics. Its activities are deeply integrated into the complex network of energy infrastructure, including pipelines, storage facilities, and shipping fleets, which enable efficient and reliable energy distribution worldwide. Vitol's main products and services include the physical trading and transportation of energy commodities, risk management solutions, and the operation of energy storage and processing facilities. The company leverages sophisticated market analysis and strategic positioning to manage price volatility and ensure supply security for its clients. Key features of Vitol's operations include its extensive global reach, access to diverse energy sources, and ability to execute large-scale transactions across multiple continents. Its target audience primarily consists of large-scale energy producers, refiners, utilities, and industrial consumers who require reliable access to energy resources and sophisticated risk management tools. Vitol's services are particularly valuable to clients seeking to navigate the complexities of global energy markets and optimize their energy procurement strategies. Notable achievements for Vitol include its consistent ranking among the world's largest independent energy traders, driven by its strategic acquisitions and operational excellence. The company holds a significant market position in key energy hubs, such as the United States, Europe, and Asia, and has demonstrated a unique value proposition through its ability to integrate trading activities with physical infrastructure investments. This dual focus allows Vitol to provide both immediate market solutions and long-term supply security, differentiating it from competitors who may focus solely on financial trading. By combining deep market expertise with tangible energy assets, Vitol has built a reputation for reliability and innovation in the energy sector.
