ICT System Engineer · Zürich, CH

Ivan Gajić

I build, secure and optimise the infrastructure companies run on.

Motivated and detail-oriented ICT System Engineer with five years in IT systems and infrastructure — specialising in Windows Server, system optimisation and vulnerability management.

5 years in IT Currently @ VINCI Energies Focus: Systems · Network · Security
01

About

Motivated and detail-oriented ICT System Engineer with five years of experience in IT systems and infrastructure — currently contributing to the team at VINCI Energies in Zürich.

I specialise in Windows Server management, system optimisation and vulnerability management, always aiming to expand my expertise in cybersecurity and IT solutions.

Previously, as an IT Infrastructure Specialist at ALTEN Switzerland AG, I supported and maintained critical IT systems and gained hands-on experience in system administration and technical support. My journey began with a four-year apprenticeship in IT System Engineering at ALTEN Switzerland AG, where I built a strong foundation in system management and network administration.

Passionate about learning and growing in the field, I'm eager to take on new challenges, deepen my expertise, and contribute to innovative solutions in IT systems and cybersecurity.

At a glance

RoleICT System Engineer
Experience5 years
LocationZürich, CH
CurrentVINCI Energies

Languages

German · Native Serbian · Native English · Fluent
02

Experience

2023 — Now
ICT System Engineer
VINCI Energies · Zürich
Current
2021 — 2023
IT Infrastructure Specialist
Alten Switzerland AG
2017 — 2021
IT Apprentice
Alten Switzerland AG
03

Skills & Tech

Systems & Servers

Windows ServerActive DirectoryMicrosoft 365LinuxVirtualizationSystem Optimization

Network

Network AdministrationNetwork MaintenanceFirewallsVLANsVPN

Security

Cyber-SecurityVulnerability ManagementIT SecurityEndpoint ProtectionWorkplace Safety

Automation & Data

PowerShellData AnalysisBig Data

Operations & Method

Project ManagementIPERKA MethodologyTechnical SupportSystem AnalysisBackup & Recovery
04

Selected Work

PROJECT_01

Company Backup Solution

Designed and rolled out a new company-wide backup & recovery solution — strengthening data resilience and shortening recovery times.

PROJECT_02

Secure Office Setup

Built a secure office environment tailored to a client's requirements, from network segmentation through to endpoint hardening.

PROJECT_03

IT Infrastructure Optimization

Streamlined and optimised existing IT infrastructure for better performance, reliability and day-to-day maintainability.

05

Education & Certifications

Education

Computer Scientist HF — Platform Development
ipso Bildung · Focus: Cyber-Security · Apr 2024 – Mar 2027
Computer Scientist EFZ — Systems Engineering
Berufsfachschule BBB Baden · Apprenticeship · Aug 2017 – Aug 2021

Certifications

Higher Business Diploma (VSK HWD)
ipso Bildung · May 2025
Workplace Safety
ipso Bildung · Nov 2024
Data Analytics & Big Data — Level 1
Berufsfachschule BBB Baden

Let's connect.

Open to a conversation about infrastructure, security, or building something solid together.

Reach me on LinkedIn ↗