12 beste Stellen als system administrator in genève, ge – aktuell auf Personalsuche

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Vitol —Genf, GE
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CERN —Genf, GE
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Direkt bewerben

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Global System Administrator

Vitol -
Genf, GE

Direkt bewerben

Details zur Stelle

Qualifikationen

Microsoft Windows Server
Französisch
Management-Erfahrung
Englisch
Microsoft Exchange
Windows
Microsoft Office
VMWare
Kommunikationsfähigkeit
PowerShell

Vollständige Stellenbeschreibung

Company Description

Vitol is a leader in the energy sector with a presence across the spectrum: from oil through to power, renewables and carbon. From 40 offices worldwide, we seek to add value across the energy supply chain, including deploying our scale and market understanding to help facilitate the energy transition. To date, we have committed over $2 billion of capital to renewable projects, and are identifying and developing low-carbon opportunities around the world.

Our people are our business. Talent is precious to us and we create an environment in which individuals can reach their full potential, unhindered by hierarchy. Our team comprises more than 65 nationalities and we are committed to developing and sustaining a diverse work force. Learn more about us here.

Job Description

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

Qualifications

Required Technical Skills & Experience

Several years of experience as a Senior System Administrator in an enterprise environment
Strong hands-on expertise in:
- Microsoft Azure
- Microsoft Entra ID (Azure AD)
- Microsoft 365 / Office 365
- Windows Server
- VMware / Vsphere
- Active Directory & ADFS
- DNS, DHCP
- Microsoft Exchange
- PKI and certificate management
Proven experience with hybrid (on‑premises and cloud) infrastructures
Solid understanding of identity, authentication, encryption, and security principles
Experience with PowerShell and automation is highly valued

Soft Skills & Personal Attributes

Open-minded – comfortable working in a multicultural, international environment
Reliable – trusted to operate and support critical systems
Flexible – adaptable to changing priorities, projects, and operational needs
Structured and methodical approach to problem-solving
Strong communication skills in technical and business contexts
Team player with a professional and service-oriented mindset

Languages

English: professional working proficiency (required)
French: working knowledge is a strong advantage

Additional Information

Nice to Have

Microsoft / Azure certifications
Experience in regulated environments (finance, trading, healthcare, international organizations)
Familiarity with Swiss data protection and security standards
Experience supporting international or multi-site infrastructures

Direkt bewerben

Erweiterte Suche

system administrator Jobs in genève, ge

Global System Administrator

administrateur système réseau

System Administrator (BE-CSS-ISA-2026-56-LD)

Database administrator

Trust Funds Strategic Engagement Analyst (FTA P2), Geneva, Switzerland (UNCDF) (Open to Tier 2 Applicants)

EPM Support Manager

Operations Officer - Alternative investments

Middle Officer Hedge Funds (6 months - Fixed Term Contract)

Cloud-Hybrid Database and Application Administrator

Global Benefits Manager

Knowledge Transfer Officer (IPT-KT-BD-2026-91-GRAP)

Channel Sales Engineer - DACH

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