# Systems & Network Admin Trainee (IT)

> Threenitas S.A. · Dafni, Greece · Full-time · Posted 2026-07-07

**Workplace:** on_site

**Department:** Operations

## Description

We are looking for a **Systems & Network Administrator Trainee** to join our IT team and support the daily operation, maintenance, and continuous improvement of our network infrastructure and internal systems.

This internship offers an excellent opportunity to gain hands-on experience in systems administration, networking, and IT support while working alongside experienced professionals. Throughout the internship, you will develop both your technical expertise and professional skills by participating in real-world IT operations and contributing to the smooth functioning of our technology environment.

Ultimately, you will build a strong foundation in IT infrastructure, troubleshooting, and system administration while learning industry best practices and collaborating with a highly skilled technical team.

### We know that you will be a good fit for our team, if...

-   You have a genuine interest in Systems Administration, Networking, and IT Infrastructure.
-   You enjoy troubleshooting technical issues and finding practical solutions.
-   You communicate clearly and effectively with both technical and non-technical users.
-   You are eager to learn, accept feedback, and continuously improve your skills.
-   You are organized, detail-oriented, and able to follow established procedures.
-   You enjoy working collaboratively as part of a team.
-   You demonstrate responsibility, professionalism, and a positive attitude.
-   You are adaptable and enjoy working in a dynamic technology environment.

### What we expect from you...

-   Assist in the installation, configuration, and maintenance of network and computer systems.
-   Support the IT team in monitoring the organization's infrastructure and systems.
-   Troubleshoot first-level technical issues and provide user support.
-   Assist in software deployment, updates, and security patch management.
-   Maintain accurate records through the company's ticketing system and technical documentation.
-   Support user account administration, including account creation, password resets, and license management.
-   Participate in routine maintenance activities and infrastructure improvement initiatives.
-   Follow IT security policies and best practices while handling company systems and information.

### Main Responsibilities

-   Assist with the installation and configuration of PCs, networking equipment, routers, switches, and VPN connections.
-   Support system monitoring and basic server administration under the guidance of senior IT administrators.
-   Troubleshoot hardware, software, and network-related issues.
-   Monitor and assist with software updates, operating system maintenance, and security patching.
-   Record, categorize, and track incidents through the ticketing system.
-   Create and maintain basic technical documentation.
-   Assist with Active Directory user administration, account provisioning, password resets, and access management.
-   Support inventory management of IT equipment and assets.
-   Collaborate with the IT team to ensure reliable and secure IT operations.

## Requirements

### We would like to talk to you, if you have...

-   Currently studying or recently graduated in Computer Science, Information Technology, Network Engineering, or a related field.
-   Basic understanding of computer networks, operating systems, and hardware.
-   Familiarity with Windows operating systems and Microsoft Office.
-   Basic knowledge of networking concepts (TCP/IP, DNS, DHCP, VPN).
-   Strong analytical and problem-solving skills.
-   Excellent communication skills in both Greek and English.
-   A strong willingness to learn and develop professionally.

### We would greatly appreciate if you also have...

-   Basic knowledge of Microsoft Active Directory and Microsoft 365 administration.
-   Familiarity with virtualization technologies.
-   Exposure to cloud platforms (Microsoft Azure or AWS).
-   Knowledge of scripting (PowerShell, Bash, or Python).
-   Previous academic or personal projects related to networking or system administration.
-   Understanding of cybersecurity principles and IT best practices.

-   Currently studying or recently graduated in Computer Science, Information Technology, Network Engineering, or a related field.
-   Basic understanding of computer networks, operating systems, and hardware.
-   Familiarity with Windows operating systems and Microsoft Office.
-   Basic knowledge of networking concepts (TCP/IP, DNS, DHCP, VPN).
-   Strong analytical and problem-solving skills.
-   Excellent communication skills in both Greek and English.
-   A strong willingness to learn and develop professionally.

## Benefits

-   Hands-on experience in a modern IT environment.
-   Mentoring and continuous guidance from experienced IT professionals.
-   Exposure to enterprise infrastructure, networking, and security technologies.
-   Opportunity to participate in real business projects.
-   Hybrid work model (where applicable).
-   Friendly and collaborative working environment.
-   Potential opportunity for future employment upon successful completion of the internship.

## Apply

[Apply at Threenitas S.A.](https://apply.workable.com/threenitas/j/C1A2700405/apply)

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