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Tirza Samosir

πŸ‘©πŸ»β€πŸ’» About me

Hi there πŸ‘‹πŸ½ My name is Tirza.
Little bit about me β€” I come from a diverse international background and I'm someone who enjoy working at the intersection of technology, communication and design. My career started in marine science, where I supported an international deep-sea research programme focused on the Indonesian coelacanth. Since then, I have worked across different sectors and multicultural environments, developing strong skills in coordination, communication, user support, and problem-solving. Over the past few years, I have worked with European Commission services, first at DG INTPA and now at DG REGIO.

My work combines functional support, documentation, training, knowledge management, and user communication for digital tools and business processes.

I also have a technical background through training in Java, front-end development, Python, and UX design, which helps me better understand digital products and collaborate with technical teams. At the same time, my interest in design and visual communication supports the way I create newsletters, documentation, presentations, and other user-focused content.

I’m curious by nature, quick to learn, comfortable working in collaborative and international environments. I’m especially interested in projects where technology, people, and good communication come together to solve real problems and create a better user experience.

Information & Document Management Expert
Unisys
Brussels | Jan 2026 - ongoing
As a member of the DG REGIO IT Guidance Team, provide functional guidance, user support, training in both English and French, documentation and knowledge-management support for DG REGIO and European Commission corporate applications used in business processes related to EU regional and cohesion policy.
Junior Analyst
ARHS Group
Brussels | Sept 2024 - March 2025
Worked within the DG INTPA Business Support and Service Delivery team, continuing from my previous assignment supporting the OPSYS/MyWorkPlace environment. Provided functional and business support to users, including the European External Action Service (EEAS) and implementing partners, with a focus on issue analysis, user guidance, documentation and continuous improvement of the user experience.
Application Support Agent
Netcompany
Brussels | Oct 2022 - Sept 2024
Provided first-line support for DG INTPA (European Commission) for applications used by NGOs and external partners applying for EU funds. Logged and tracked incidents in ServiceNow, ensuring proper categorization, resolution, and accurate reporting.
Customer Service Associate
Apart & Moment
De Haan | Jan 2018 - Dec 2019
Provided customer-facing service in a fast-paced hospitality environment, supporting customers from diverse cultural backgrounds and contributing to efficient daily operations and service quality. The role strengthened my customer communication, teamwork and problem-solving skills while supporting my professional integration into the Belgian workplace environment.
Assistant to the Indonesian Ambassador
Embassy of Indonesia
Mozambique | Feb 2016 - Oct 2016
Supported the Indonesian ambassador in diplomatic, administrative, and stakeholder engagement activities. Facilitated communication with government authorities, business representatives and international organisations, while supporting official visits, diplomatic events, trade-promotion activities, correspondence and mission logistics in a multicultural environment.
Japanese Client Relations
Jabato International
Bali | Jan 2015 - Jan 2016
Managed customer relations and service coordination for Japanese clients, ensuring effective communication, accurate planning and high-quality service delivery.
Assistant Project Manager for Green Eye Project
Aquamarine Fukushima
Japan-Indonesia | Nov 2010 - Nov 2014
During my Marine Science studies at Sam Ratulangi University, I contributed to the wider research programme investigating the Indonesian coelacanth (Latimeria menadoensis). My involvement began through my university thesis and included supporting field research, scientific data collection using remotely operated vehicles (ROVs), research documentation, and collaboration with Indonesian and Japanese researchers. After graduating, I continued working on the project, supporting field activities, project coordination, reporting and stakeholder communication.
Projects

This section showcases my solo projects, designed and developed from scratch. Each project reflects my skills, dedication, and hands-on experience in building functional applications.

Career Transition Buddy

AI-powered app is here to help anyone looking to make a career change. Whether you’re switching to a new role, or coming back to work after a break, Career Transition Buddy offers short, clear and practical advice to guide you every step of the way.

React Weather Application

This weather app project provides 5 days weather forecast with essential weather informations. Optimized for web and mobile-friendly.

Climate Change Website

This responsive web project is a part of my portfolio and showcases my skills in creating user-friendly websites.

React Dictionary App

This project was created as part of my final SheCodes Bootcamp assignment. It showcases my ability to build a functional dictionary app where users can search for a word and receive its definition along with related images.

Responsive Travel Website

This travel website is part of my portfolio, and it highlights my skills and ability to build websites that are easy to use and look great on all screen sizes.