--- title: Dimitrios Rarras · Full-Stack Developer description: Full-stack developer based in Ioannina. Headless commerce, AI-augmented PIM, and software for healthcare institutions. lang: en source: https://jimrarras.com/en/ fetched: '2026-08-25T11:05:12.000Z' --- Software you own.Built to last. ## Dimitrios RarrasFull-Stack Developer · Headless Commerce · Healthcare Software PRODUCTION SOFTWARE FOR - Heartbeat Pharmacy - Zosimades Nursing Home - Ioannina Univ. Hospital - Komvos Ygeias - Kleidarakos B2B - pooq.gr ABOUT Full-StackDeveloperinIoannina,Greece.Ibuiltthee-commerceplatformthatrunsHeartbeatPharmacy,andtheclinicalsoftwarethatrunstheZosimadesNursingHomeofIoannina.Bothareinproductiontoday. TypeScriptReact 19Next.js 16AstroMedusa.jsNode.jsPostgreSQLRedisTanStack QueryReact Native ![Dimitrios Rarras](https://jimrarras.com/images/profile-pic.webp) [![](https://jimrarras.com/svgs/github.svg)](https://github.com/jimrarras)[![](https://jimrarras.com/svgs/linkedin.svg)](https://linkedin.com/in/jimrarras)[![](https://jimrarras.com/svgs/mail.webp)](mailto:demetriosrarras@gmail.com) SERVICES ## What I do Four service categories, each backed by at least two production systems. - [ 01. ### Commerce platforms you own - MEDUSA - NEXT.JS - B2C + B2B Replace your Shopify Plus or rented WooCommerce with a storefront you control. Same checkout, lower fees, every Greek integration your business needs: couriers, banks, marketplaces, multi-vendor importers. Built for B2B catalogs, high-volume brands, and stores SaaS cannot ship. See all services ](https://jimrarras.com/en/services/headless-commerce/) - [ 02. ### Product catalogs that scale - PIM - AI ENRICHMENT - MULTI-SUPPLIER PIM systems with AI-augmented enrichment, multi-supplier ingestion, and ERP sync. The back-of-house that keeps your commerce platform selling instead of pausing for data entry. See all services ](https://jimrarras.com/en/services/catalog-pim-systems/) - [ 03. ### Software for institutions that need it - FHIR - BUN / ELYSIA - HEALTHCARE OPS Clinical operations platforms, inventory management, FHIR-compliant mobile health apps. Built (often volunteered) for Greek healthcare institutions where the alternative is paper, or nothing. See all services ](https://jimrarras.com/en/services/healthcare-civic-tech/) - [ 04. ### Greek-first bilingual websites - ASTRO - EL + EN - SCHEMA-FIRST Astro websites with proper Greek SEO, structured schema, and edge-cached static hosting. EL primary, EN mirror. Deliverable in weeks, not months. See all services ](https://jimrarras.com/en/services/bilingual-websites/) WEBSITES ## Live client websites Seven shipped sites, six built on the website-template I maintain, one (40Roomors) on a custom Next.js + headless CMS I wrote from scratch. PROJECTS ## Projects & Case Studies Eleven case studies from systems in production today. [ ### Heartbeat Pharmacy Platform Medusa 2.14 / Next.js 16 / PostgreSQL Employer 2024–present Pre-launch ![](https://jimrarras.com/images/projects/heartbeat-pharmacy/hero-400.webp) A full e-commerce platform for a Greek pharmacy, owned outright (no per-transaction SaaS bill), with AI shrinking SKU enrichment from days to hours.. Lead Developer.](https://jimrarras.com/en/projects/heartbeat-pharmacy/)[ ### Kleidarakos B2B & Papanikolaou Doors Medusa B2B / Next.js 16 / Express + TypeORM Client 2024–present ![](https://jimrarras.com/images/projects/kleidarakos-papanikolaou/hero-400.webp) A B2B marketplace replacing the spreadsheet-and-phone process for a Greek locksmith network. Quote workflows, multi-supplier catalog imports, and a 3D door configurator that lets customers visualise before ordering.. Lead Developer.](https://jimrarras.com/en/projects/kleidarakos-papanikolaou/)[ ### Γηροκομείο Ζωσιμάδων Ιωαννίνων: Healthcare Ops Stack Bun + Elysia / Hono / PostgreSQL 18 Volunteer 2024–present ![](https://jimrarras.com/images/projects/zosimadon-healthcare-ops/hero-400.webp) Three integrated systems that took the Zosimades Nursing Home of Ioannina off paper: clinical operations, inventory management, and a handheld scanner for shift inventory counts. Built as volunteer work, in production daily.. Volunteer Lead Developer & Maintainer.](https://jimrarras.com/en/projects/zosimadon-healthcare-ops/)[ ### Komvos Connect Fastify 5 / PostgreSQL 16 + Drizzle / Redis + BullMQ Personal 2025–present ![](https://jimrarras.com/images/projects/multi-tenant-calendar/hero-400.webp) A self-hosted booking platform: drop a single script tag on any business website and you have availability, calendar sync, and confirmations. Replacing Calendly-class SaaS for clinics, hairdressers, and service providers.. Lead Developer.](https://jimrarras.com/en/projects/multi-tenant-calendar/)[ ### Migraine Tracker React Native 0.81 / Expo 54 / Express 5 Personal 2025–present Pre-launch ![](https://jimrarras.com/images/projects/migraine-tracker/hero-400.webp) A migraine-tracking mobile app where the FHIR export is actually compliant: a neurologist can import the patient's history straight into their EHR. iOS and Android, works offline.. Lead Developer.](https://jimrarras.com/en/projects/migraine-tracker/)[ ### Rorsa Tools TypeScript / Node.js 20+ / Vertex AI Nano Banana Open Source 2025–present ![](https://jimrarras.com/images/projects/rorsa-tools/hero-400.webp) An MCP toolkit that lets Claude (and other AI agents) generate, edit, and process images at production scale. 14 tools, batch processing, GPU-accelerated background removal. The toolkit that built this very portfolio's image set.. Maintainer.](https://jimrarras.com/en/projects/rorsa-tools/)[ ### e-support Private KEP, Ioannina Astro 7 / Tailwind v4 / Cloudflare Workers Client 2026 ![](https://jimrarras.com/images/projects/esupport-ioannina/hero-400.webp) Bilingual website for a private citizen-services bureau in Ioannina: 12 service categories, JSON-LD with GEMI/VAT identifiers, an AEO layer with build-time llms.txt and a markdown mirror, and CI gates at every step. From design comps to Cloudflare production.. Lead Developer.](https://jimrarras.com/en/projects/esupport-ioannina/)[ ### WooCommerce Plugins for pooq.gr WordPress / WooCommerce / PHP Client 2023–present ![](https://jimrarras.com/images/projects-cards/pooq-400.webp) Four custom plugins (ACS Courier, Skroutz feed, multi-vendor importer, Piraeus Bank gateway) shipped to a live Greek e-commerce store I maintain. The plugins fill the gaps stock WooCommerce leaves for Greek commerce. The ACS Courier plugin is open-source.. Lead Developer.](https://jimrarras.com/en/projects/pooq-plugins/)[ ### PGNI Hospital StorageManagement Tauri 2 / Rust / React 19 Volunteer 2024–present ![](https://jimrarras.com/images/projects-cards/pgni-storage-400.webp) A Tauri + Rust + React desktop app that replaced a legacy C# WinForms system for tracking lab reagents and equipment at Ioannina University Hospital (Π.Γ.Ν.Ι.). Volunteer civic-tech work for a Greek public hospital.. Volunteer Lead Developer.](https://jimrarras.com/en/projects/pgni-storage/)[ ### TaskFlow Fastify / PostgreSQL + Drizzle / Redis + BullMQ Personal 2024–present ![](https://jimrarras.com/images/projects-cards/taskflow-400.webp) An offline-first task-dispatch PWA for hospitality teams. Realtime updates via Socket.IO, BullMQ scheduler for recurring tasks, IndexedDB mutation queue so the app keeps working when the Wi-Fi drops. Multi-tenant SaaS, live and free at tasks.jimrarras.com.. Lead Developer.](https://jimrarras.com/en/projects/taskflow/)[ ### Delivery Tracker Fastify / PostgreSQL + PostGIS / Drizzle ORM Personal 2024 ![](https://jimrarras.com/images/projects-cards/delivery-tracker-400.webp) A real-time delivery-dispatch system that assigns orders to drivers based on distance, current load, and historical performance. PostGIS spatial queries, Socket.IO driver tracking, scoring-based assignment iterated with the dispatch team.. Lead Developer.](https://jimrarras.com/en/projects/delivery-tracker/) NUMBERS ## By the numbers - 10+Production systems shipped - 2Healthcare institutions under maintenance - 5Live client websites - 14MCP tools (Rorsa Tools) - 4Custom WooCommerce plugins CONTACT ## Let's talk Available for collaborations, custom solutions, and questions. I reply within 1–2 business days. Or book a slot directly