Senior System Administrator

Publication date : Oct 19, 2026, 12:00AM

Join us at Orange Business!

We are a network and digital integrator that understands the entire value chain of the digital world, freeing our customers to focus on the strategic initiatives that shape their business.

Every day, you will collaborate with a team dedicated to providing consistent, sustainable global solutions, no matter where our customers operate. With over 30,000 employees across Asia, the Americas, Africa, and Europe, we offer a dynamic environment to develop and perfect your skills in a field filled with exciting challenges and opportunities.

Infrastructure and technical leadership

• Manage and monitor infrastructure and system deployments, including configuration, testing and maintenance.
• Implement and support VMware, Microsoft and Linux technologies.
• Implement and maintain backup, security and redundancy strategies.
• Maintain the team’s technical standards through expert knowledge of its processes, service offerings and tools.
• Provide technical guidance to clients on escalated tickets and change requests.
• Coach team members through regular quality reviews with the Operations Manager. Identify skills gaps and implement improvement plans to meet current and future operational needs.
• Act as the technical point of contact during project and client handovers. Ensure the required tests are completed and support the Line Manager’s assessment of operational readiness.
• Work with the Team Leader and Line Manager to maintain the quality of day-to-day technical operations and deliverables for cloud customers, improve team efficiency and strengthen overall service quality.
• Lead technical escalations and incident resolution during major incidents.
• Ensure support documentation is available and work with the team to maintain the knowledge base for messaging and collaboration services.
• Promote a positive and inclusive working environment built on accountability, collaboration, flexibility and continuous improvement.

Change management

• Fulfil standard and complex change requests.
• Manage software updates and configuration, including scripting and automation, across a multi-tier production cloud infrastructure.
• Plan major upgrades and changes to maintain service reliability and availability.
• Act as a key client contact for critical system changes.
• Provide technical input on change requests requiring advanced expertise.
• Work with project leads to establish change management processes tailored to specific requirements.

Incident management

• Respond to escalated issues, troubleshoot errors and develop technical solutions and process improvements.
• Identify systemic issues and determine the root causes of complex incidents.
• Restore service as quickly as possible following an outage.
• Escalate incidents to other teams, providing relevant investigation findings.
• Gather data and prepare the groundwork for root cause analysis, as required.
• Provide expert support to the System Administrator team during major incidents.
• Participate in crisis management activities and technical escalations.

Knowledge management

• Develop, document and implement standardized procedures for the day-to-day management of messaging and collaboration services.
• Support and coach Level 1 and System Administrator teams in incident handling and change requests.

Reporting and communication

• Communicate proactively with customers to understand and resolve issues and manage expectations.
• Build strong relationships with internal and external stakeholders to improve service and knowledge sharing.
• Foster a proactive, service-oriented culture within the team.
• Report operational issues to the Operations Manager and provide technical debriefs.
• Identify operational improvement opportunities with the Operations Manager.
• Support the smooth transition of projects into operations and report on progress to the Operations Manager.

Skills and experience

• Bilingual in English and French, both written and spoken.
• Proficient in IT, including networking, Linux, Windows, databases, virtualization and backup.
• Knowledge of:
  • Information systems
  • Systems administration in virtualized environments
  • IT processes, standards and ITIL
  • Incident and change management
  • Customer relationship management

Personal attributes

• Strong time management, organizational and communication skills.
• Excellent customer service skills.
• Proactive, self-motivated and determined.
• Professional and able to work under pressure while managing multiple priorities.
• Persistent and eager to learn.
• Able to build strong relationships with local and international teams.
• Strong interpersonal, team-building and leadership skills.
• Solid IT and communications background, with strong problem-solving skills.
• Flexible working hours.

You bring a can-do attitude, tackle challenges head-on and challenge the status quo with new and innovative ideas.

• Global Opportunities: Work in multi-national teams with opportunity to collaborate with colleagues and customers from all over the world.
• Flexible Work Environment: Flexible working hours and possibility to combine work from office and home (hybrid ways of working).
• Professional Development: Training programs and upskilling/re-skilling opportunities.
• Career Growth: Internal growth and mobility opportunities within Orange.
• Caring and Daring Culture: Health and well-being programs and benefits, diversity & inclusion initiatives, CSR and employee connect events.
• Reward Programs: Employee Referral Program, Change Maker Awards.

At Orange, only your skills matter.

Regardless of your age, gender, background, origin, religion, sexual orientation, disability, neurodiversity, or appearance, we actively encourage diversity within our teams, as it is a collective strength and a driver of innovation.
Orange is a disability-inclusive employer: please feel free to let us know about any specific needs you may have.