IT System Administrator

HumanInTech; Brussel Hoofdstad; Hybrid; EUR 47,000 - 69,000; Full time

Job summary

HumanInTech seeks an IT System Administrator to ensure the daily operation of the organisation's IT infrastructure, deploying, administering and maintaining technical services and platforms. You will guarantee availability, security and performance while providing third-line support and contributing to infrastructure evolution projects.

Your core responsibilities include administering Windows Server environments, Active Directory, DNS, DHCP, GPO, Microsoft 365 (Entra ID, Intune, Exchange Online,

Qualifications

• Essential: More than 3 years IT System Administrator experience.
• Essential: Expert-level knowledge of public cloud platforms (Amazon and Microsoft 365).
• Essential: Expert-level knowledge of VMware.
• Essential: Native-level Dutch or French; Active knowledge of English.
• Essential: Excellent analytical and problem-solving skills.
• Essential: Autonomy and initiative; rigour and proactive mindset.
• Essential: Strong client listening skills.

Responsibilities

• Administer and maintain Microsoft Windows Server environments
• Administer Active Directory, DNS, DHCP and GPO services
• Administer Microsoft 365 services (Entra ID, Intune, Exchange Online, Teams and OneDrive)
• Administer Microsoft SQL Server databases
• Administer VMware virtualisation infrastructure (ESXi, vCenter, Site Recovery Manager and vSphere Replication)
• Deploy, administer and maintain Lansweeper IT inventory solution
• Deploy, administer and maintain WhatsUp Gold monitoring solution
• Deploy, administer and maintain WithSecure antivirus solution
• Deploy, administer and maintain SafeQ print management solution
• Configure and maintain multimedia and videoconferencing equipment in meeting rooms
• Ensure availability, performance and security of system infrastructure
• Provide third-line support
• Write and update technical documentation

Skills

Public cloud platforms

VMware

Dutch

French

English

Analytical skills

Problem solving

Autonomy

Initiative

Client listening

Education

Bachelor's degree

Tools

WSUS

PowerShell

Commvault

Lansweeper

WhatsUp Gold

WithSecure

SafeQ

Job description

What you will do

You will ensure the daily operation of the organisation's IT infrastructure, participating in deployment, administration, maintenance and continuous improvement of technical services and platforms. You will guarantee availability, security and performance while providing third-line support and contributing to infrastructure evolution projects.

Your core responsibilities include:

• Administer and maintain Microsoft Windows Server environments
• Administer Active Directory, DNS, DHCP and GPO services
• Administer Microsoft 365 services (Entra ID, Intune, Exchange Online, Teams and OneDrive)
• Administer Microsoft SQL Server databases
• Administer VMware virtualisation infrastructure (ESXi, vCenter, Site Recovery Manager and vSphere Replication)
• Deploy, administer and maintain the Lansweeper IT inventory solution
• Deploy, administer and maintain the WhatsUp Gold monitoring solution
• Deploy, administer and maintain the WithSecure antivirus solution
• Deploy, administer and maintain the SafeQ print management solution
• Configure and maintain multimedia and videoconferencing equipment in meeting rooms
• Ensure availability, performance and security of system infrastructure
• Provide third-line support
• Write and update technical documentation

What we are looking for

Essential skills and experience:

• More than 3 years of experience as an IT System Administrator
• Expert-level knowledge of public cloud platforms (Amazon and Microsoft 365)
• Expert-level knowledge of VMware
• Native-level Dutch or French
• Active knowledge of English
• Excellent analytical and problem-solving skills
• Autonomy and initiative
• Rigour, proactivity and solution-oriented mindset
• Strong client listening skills

Additional skills sought:

• Ability to administer and maintain Windows Server Update Services (WSUS)
• Experience performing restorations from Commvault
• Ability to write PowerShell scripts
• Knowledge of information systems security best practices
• Ability to participate in technical infrastructure projects
• Technology watch role

The setting

This assignment runs from 1 November 2026 to 31 December 2026. The role is based in Brussels and requires full on-site presence. You should be willing to work evenings and weekends for maintenance activities when needed.

You will work closely with the Systems Manager and other IT teams within the organisation.

You can join us for this assignment as a freelancer or as an employee of HumanInTech. Same role, same team. If you join as an employee, your employment continues beyond this assignment. When it ends, we'll work together to find your next assignment.

Location: Brussels

Work address: Belgium

Employer / contracting party: HumanInTech

Applications close (Brussels time): October 28, 2026 at 1:00 AM

Engagement: Freelance or employed by HumanInTech

Working hours: Full-time

Experience: 3-5 years or more

Education: Bachelor's or more

Published: October 2026