ABOUT
Dimitrios Rarras
Full-stack developer in Ioannina, Greece. I build websites, online shops and software for businesses and healthcare institutions, from the first conversation to production, and I look after them afterwards.
What I do today
Freelance full-stack developer
Since 2023 · Ioannina
Websites, online shops, integrations and custom software for businesses in Ioannina and across Greece: medical practices, a private citizen-services office, a WooCommerce shop, a locksmith network that orders B2B. Every project runs through Rorsa Platform, the CRM and client portal I built.
Services · Work · How I work
Lead developer, Heartbeat Pharmacy
Since November 2024 · Ioannina
I designed and built the pharmacy's platform: the online shop, the catalogue system the staff use, and the service that keeps the shop's stock in line with the ERP in the store.
Lead developer, Komvos Ygeias
Since its founding in April 2025 · Ioannina
Komvos Ygeias (Κόμβος Υγείας) provides home healthcare services. I built its website, where candidates send their CV directly, and its shop for medical equipment and health products, which sells to individuals and businesses.
Volunteer work
Zosimades Nursing Home of Ioannina
Three systems in daily use: the clinical platform with every resident's record, inventory management, and a stock-counting phone app that keeps working with no network. The new medication rounds come with the release that is ready to install.
Ioannina University Hospital
An inventory program for the haematology department's molecular biology unit, which replaced an old system and works without a network.
Open source
Code from my projects that is publicly available on GitHub.
- ACS Courier for WooCommerce: Vouchers, pickup lists and tracking from the order screen, with pickup from ACS lockers and shops on a map.
- BOX NOW for WooCommerce: A rewrite of BOX NOW's official integration, with locker choice at checkout, vouchers and tracking.
- Piraeus Bank for WooCommerce: A fork I maintain, for card, Google Pay and IRIS payments through Piraeus Bank's Paycenter.
- StorageManagement: The code of the Ioannina University Hospital's inventory program.
Writing
- Real FHIR 4.0.1 in a Mobile Health App: Beyond the Marketing Claim
- Embedded MCP Servers in Production: AI Agents Inside Your TypeScript Backend
- Headless Commerce with Medusa.js: Why Heartbeat Pharmacy Didn't Go With Shopify Plus
Education
Integrated Master's in Electrical and Computer Engineering, University of Western Macedonia (2016-2022).
What I work with
TypeScript · React 19 · Next.js 16 · Astro · Medusa.js · Node.js · PostgreSQL · Redis · TanStack Query · React Native