Hi, I’m Lazar.
System & Network Administrator
I work where reliability matters. I have over 7 years of experience planning, implementing, and managing Windows Server, Hyper-V, Microsoft 365, Linux, and network infrastructures for business customers.
I also design and deploy full-stack web applications, and I automate infrastructure and delivery with PowerShell, Bash, Ansible, Terraform, and CI/CD.
Systems fail — it’s an unavoidable part of the job.
My responsibility is to prevent what can be prevented and control what cannot.
Experience
- Planning, deployment, administration, and migration of Windows Server and Linux infrastructures for business customers.
- Implementation and management of Microsoft Hyper-V environments, including physical hosts, virtual machines, virtual networking, and storage configuration.
- Administration of Windows Server environments, including Active Directory (AD DS), Group Policy (GPO), file servers, Remote Desktop Services (RDS), DNS, and DHCP.
- Deployment and administration of Microsoft 365 and Entra ID, including Exchange Online, Teams, SharePoint, OneDrive, identity and access management, and tenant migrations.
- Configuration and maintenance of network infrastructure, including TCP/IP, VLANs, routing, VPN connectivity, and firewall policies.
- Administration of Veeam Backup & Replication, including backup configuration, monitoring, and system recovery.
- Deployment and maintenance of Linux-based web and database servers, Docker environments, and automation using PowerShell and Bash.
- Troubleshooting complex infrastructure incidents, executing system migrations, and providing technical support to German-speaking business customers.
- Design and development of full-stack web applications using TypeScript, React, Next.js, and Vue.js.
- Development of REST APIs, backend services, and PostgreSQL databases, including database schema design and integration.
- Deployment and administration of containerized applications using Docker, Docker Compose, and Linux-based hosting environments.
- Configuration and management of hosting infrastructure on Hetzner and AWS, including web servers, reverse proxies, SSL/TLS certificates, and DNS.
- Implementation of CI/CD workflows using GitHub Actions, with a focus on automated builds, deployments, and application maintenance.
Projects
Coming soon.
About me
My name is Lazar Vujović. I live and work in Serbia, and I have over 7 years of experience planning, implementing, and managing complex IT infrastructures for business customers. My focus is Windows Server, virtualization, Microsoft 365, Linux, and networking.
At ITM GmbH in Rosenheim I work as a System & Network Administrator. I deliver infrastructure projects on my own, including Hyper-V, Active Directory, Microsoft 365 and Entra ID, networks and firewalls, and Veeam Backup & Replication. A large part of the work is server migrations, complex incident troubleshooting, and direct support for German-speaking customers.
Since 2023 I have also worked freelance on full-stack web applications with TypeScript, React, Next.js, and Vue.js, including REST APIs and PostgreSQL. I deploy them with Docker on Linux, host them on Hetzner and AWS, and automate builds and releases with GitHub Actions.
Bachelor of Applied Sciences in Business Informatics
German — C1 · English — very good · Serbian — native
- Windows Server
- Linux
- Hyper-V
- Microsoft 365
- Exchange
- Entra ID
- Azure
- Networking
- Firewalls
- Swyx IP Telephony
- PowerShell
- Bash
- Ansible
- Docker
- Terraform
- Git
- CI/CD
- React
- Next.js
- Vue
- TypeScript
- JavaScript
- REST APIs
- Nginx
- PostgreSQL
Bachelor thesis
Final thesis in Business Informatics, in English and German.