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Sebestyen RetiSR

Sebestyen Reti

IT Consultancy and Support

€350/day
Zürich, CH
3-7 years

Average response time: 1 hour

About Sebestyen

IT Infrastructure & Microsoft 365 Consultant with over 6 years of experience supporting international businesses across Switzerland.

I specialize in Microsoft 365 administration, Exchange Online, Azure AD (Entra ID), IT infrastructure, network administration, user lifecycle management, and end-user support. My experience includes managing enterprise environments, implementing security best practices, troubleshooting complex technical issues, and supporting business-critical systems.

I have successfully delivered projects involving Microsoft 365 migrations, mailbox management, device deployment, Wi-Fi and network configuration, Group Policy administration, and IT process optimization.

My goal is to provide reliable, efficient, and business-focused IT solutions that help organizations improve productivity, security, and operational stability.

Areas of expertise:

Microsoft 365 Administration
Exchange Online
Azure AD / Microsoft Entra ID
Windows Server & Active Directory
Group Policy (GPO)
Network Administration & Wi-Fi
IT Support (L1/L2/L3)
Device Deployment & User Onboarding
Microsoft Teams
IT Infrastructure & Troubleshooting

Based in Zurich, available for both remote and on-site engagements.
  • English

    Native or bilingual

  • French

    Basic

  • German

    Conversational

  • Hungarian

    Conversational

Can work on-site
Zürich (up to 50km)

Experience

  • Lalique Group
    IT Coordinator
    October 2023 - Today (2 years and 8 months)
    Provide first and second level of support, remotely and on-site Assistance with user onboarding and offboardings Led and contributed to key IT projects, including: migration of mailboxes and Office Suite to O365 antivirus migration to a cloud managed solution (ESET) implementation of a cloud backup solution and a backup concept design data migration to SharePoint replacement of server infrastructure migration of telephony system from Mitel to MS Teams
    introduction of patch management introduction of an e-learning platform for cyber-awareness training and phishing simulations introduction of disk encryption (BitLocker) introduction of password management tooling M365 tenant merge Oversaw domain names management and ensured reliable domain operations Administration of Active Directory, M365 and Google Workspace Troubleshooting network connectivity issues
    Support for internal conferences with the AV equipment SAP Basic troubleshooting Tasks in the area of Microsoft Azure Document technical issues, solutions, and user guides in knowledge bases Hardware inventory Laptops and other hardware repairs Disposal of hardware in a secure way
    Budget overview Acting as liaison between the organization and external IT service
    providers Helping to optimize internal workflows between IT and other departments
  • Five Hotel Zürich
    IT Specialist
    March 2023 - September 2023 (6 months)
    Provide first and second level of support for users on Windows and Apple based systems Provide first level of support for 3CX telephony system Troubleshoot issues for Opera PMS and Symphony POS Assist high-end hotel guests with IT related issues such as Wi-FI, TV, Telephony etc. Update asset inventory Monitor contracts with the 3rd party companies Escalate effectively unsolved issues to the next level of support Assistance with audio-video equipment in the conference rooms In lead for new IT projects
  • The Living Circle,
    IT Support Specialist
    December 2021 - March 2023 (1 year and 3 months)
    Zürich, Switzerland
    Provide first and second level of support for users on Windows-based systems, both on site and remotely Provide first level of support for the Innovaphone and Unify telephony systems, including device registration, phone number creation, call routing, licensing, and troubleshooting Manage Samsung Knox MDM registered devices for the company Provide support for Otrum TV systems and troubleshoot and fix signage solution issues Collaborate with other departments to find innovative solutions to improve workflow Responsible for hardware inventory management, including purchasing new equipment and opening and following warranty cases Updating quality management documents Supporting and troubleshooting various software applications, including but not limited to: Protel (property management system), Dropbox, Nextcloud, Microsoft Office suite, Abacus (accounting software) Troubleshooting payment processing hardware devices Troubleshoot network-related issues, including Wi-Fi connectivity, network switches, routers, firewalls Document findings and escalate unsolved problems to the next level of support Monitor contracts and service level agreements with external partners and manage department budgeting Assist VIP hotel guests with IT-related issues and provide technical assistance with audio-video equipment for events Prepare new work stations Led and finished IT-related projects such as implementing the Knowcross platform for the housekeeping department, network extension for the company's farm, changing mobile devices for employees, a completely new audio-video system for hotel seminar rooms, redundant Internet connection implementation, changing printers in hotels, and some more Leading of the department

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Education

  • Cisco IT Essentials
    Catholic High School
    2019
    Cisco IT Essentials
  • Comptia A+
    2024
    Comptia A+

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