Ioan Liviu Popa - IT Specialist/Application Developer

Q: Where is Ioan Liviu based?

Ioan Liviu is based in Kandern, Germany and prefers 100% remote projects.

Q: What languages does Ioan Liviu speak?

Ioan Liviu speaks the following languages: German (Native), Romanian (Native), English (Advanced), French (Advanced), Italian (Advanced) .

Q: How many years of experience does Ioan Liviu have?

Ioan Liviu has at least 27 years of experience. During this time, Ioan Liviu has worked in at least 4 different roles and for 4 different companies . The average length of individual experience is 7 years and 10 months . Note that Ioan Liviu may not have shared all experience and actually has more experience.

Q: What is Ioan Liviu's latest experience?

Ioan Liviu's most recent position is IT Specialist/Application Developer at HST Systemtechnik GmbH / Axel Zangenberg GmbH .

Q: What companies has Ioan Liviu worked for in recent years?

In recent years, Ioan Liviu has worked for HST Systemtechnik GmbH / Axel Zangenberg GmbH and Self-employed .

Q: Which industries is Ioan Liviu most experienced in?

Ioan Liviu is most experienced in industries like Information Technology , Professional Services , and Government and Administration . Ioan Liviu also has some experience in Aerospace and Defense .

Q: Which business areas is Ioan Liviu most experienced in?

Ioan Liviu is most experienced in business areas like Information Technology , Operations , and Product Development .

Q: Which industries has Ioan Liviu worked in recently?

Ioan Liviu has recently worked in industries like Information Technology .

Q: Which business areas has Ioan Liviu worked in recently?

Ioan Liviu has recently worked in business areas like Information Technology and Product Development .

Recommended expert

Kandern, Germany

Experience

Jan 2013 - Dec 2021

9 years

Schliengen, Germany

IT Specialist/Application Developer

HST Systemtechnik GmbH / Axel Zangenberg GmbH

Development of web applications and integration with the Work4All ERP/CRM system using Node.js (Express.js, Socket.IO, TypeScript, Angular, Material, Angular Flex)
Development of web applications with PHP (without framework)
Frontend development with HTML, CSS, SCSS, JavaScript, JSON, Bootstrap, complex forms and data tables
Database work with Microsoft SQL Server, MySQL, MongoDB and others
Collaborative work using Agile/Scrum and version control with Git
Configuration, maintenance, migration and backup of CMS (Joomla, Mediawiki, Piwik/Matomo)
System administration until 2019: maintenance and configuration of servers (Windows, Linux), clients and network
Virtualization with VMware ESXi and Veeam Backup & Replication
Initial steps in the field of artificial intelligence and machine learning.

Jan 2010 - Present

16 years 3 months

IT Specialist

Self-employed

System administration: maintenance, configuration and backup of servers (Windows Server 2025 including Active Directory, DNS, Linux, Solaris) and clients (Windows, Linux), network, firewalls and VPN (e.g., with WireGuard or OpenVPN)
Virtualization (Proxmox, VMware ESXi, Veeam Backup & Replication)
Apache web server, Certbot, server configuration with Plesk and Hestia Control Panel
Documentation systems: Nextra, VitePress (static site generators with Markdown), draw.io (diagrams), Atlassian Confluence
CMS: TYPO3, WordPress
Web scraping with Node.js, Axios and Cheerio
Cloud technologies: Oracle Cloud Infrastructure, Amazon Web Services, Hetzner, Akamai
DevOps with GitLab, Apache Subversion, testing with Karma/Jasmine and Jenkins, GitLab CI, Docker, Portainer, LXC, Ansible, Karma (alert dashboard)
Database administration: Microsoft SQL Server, MySQL, MongoDB, Informix and more
Application development (REST APIs/Microservices) with Node.js/JavaScript (NVM, Socket.IO, AJAX, MySQL, MongoDB, JSON), React, Angular, TypeScript, D3.js/SVG, PHP and Python (without framework)
AI experiments with PyTorch, TensorFlow and hardware acceleration
AI assistance: VSCode with Ollama and local LLMs, Open WebUI and Msty
Collaborative work using Agile, Scrum and Kanban; tools: Slack, Atlassian Jira, Trello, Microsoft Teams, Zoom, Matrix with Element, Kopano, Jitsi Meet, OTRS
These are all technologies I've used over the years, some more, some less, and some to this day.
At home, I have four 19-inch servers for virtualization.

Jan 2000 - Dec 2011

12 years

Volunteer

Various Organizations

Volunteer work in various social institutions in Timișoara, Bucharest, Prague, Reykjavík and other places
Roles as IT specialist, development aid worker and translator

Jan 1999 - Dec 1999

1 year

Military Service

Six months of military service

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Information Technology, Professional Services, Government and Administration, and Aerospace and Defense.

Information Technology

Professional Services

Government and Administration

Aerospace and Defense

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Operations, and Product Development.

Information Technology

Operations

Product Development

Languages

German

Native

Romanian

Native

English

Advanced

French

Advanced

Italian

Advanced

Education

Oct 1995 - Jun 1999

West University of Timișoara

Bachelor's degree · Computer Science · Timișoara, Romania

Certifications & licenses

Driver's license class B

Statistics

Experience

Total positions 4

Experience in Information Technology 26 y

Avg length 9 y 6 m

Longest experience 16 y 2 m

Global Experience

Countries worked in 1 (Germany)

Primary country Germany

Expertise

Recent roles IT Specialist/Application Developer, IT Specialist, Volunteer

Main industries Information Technology, Professional Services, Government and Administration

Main business areas Information Technology, Operations, Product Development

Qualifications

Highest degree Bachelor

Certifications earned 1

Profile

Created

May 2025

Last Update

July 2025

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Ioan Liviu based?

Ioan Liviu is based in Kandern, Germany and prefers 100% remote projects.

What languages does Ioan Liviu speak?

Ioan Liviu speaks the following languages: German (Native), Romanian (Native), English (Advanced), French (Advanced), Italian (Advanced).

How many years of experience does Ioan Liviu have?

Ioan Liviu has at least 27 years of experience. During this time, Ioan Liviu has worked in at least 4 different roles and for 4 different companies. The average length of individual experience is 7 years and 10 months. Note that Ioan Liviu may not have shared all experience and actually has more experience.

What roles would Ioan Liviu be best suited for?

Based on recent experience, Ioan Liviu would be well-suited for roles such as: IT Specialist/Application Developer, IT Specialist, Volunteer.

What is Ioan Liviu's latest experience?

Ioan Liviu's most recent position is IT Specialist/Application Developer at HST Systemtechnik GmbH / Axel Zangenberg GmbH.

What companies has Ioan Liviu worked for in recent years?

In recent years, Ioan Liviu has worked for HST Systemtechnik GmbH / Axel Zangenberg GmbH and Self-employed.

Which industries is Ioan Liviu most experienced in?

Ioan Liviu is most experienced in industries like Information Technology, Professional Services, and Government and Administration. Ioan Liviu also has some experience in Aerospace and Defense.

Which business areas is Ioan Liviu most experienced in?

Ioan Liviu is most experienced in business areas like Information Technology, Operations, and Product Development.

Which industries has Ioan Liviu worked in recently?

Ioan Liviu has recently worked in industries like Information Technology.

Which business areas has Ioan Liviu worked in recently?

Ioan Liviu has recently worked in business areas like Information Technology and Product Development.

What is Ioan Liviu's education?

Ioan Liviu holds a Bachelor in Computer Science from West University of Timișoara.

Does Ioan Liviu have any certificates?

Ioan Liviu has 1 certificate: Driver's license class B.

What is the availability of Ioan Liviu?

Ioan Liviu is immediately available part-time for suitable projects.

What is the rate of Ioan Liviu?

Ioan Liviu's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.