PROJECTS

Projects & Case Studies

Eleven case studies from systems in production today.

pooq.gr: Migration, Performance and Commerce Engineering

WordPress / WooCommerce / PHP 8.3 / MariaDB

Client

2026

Took over a live Greek WooCommerce store and rebuilt it across infrastructure, speed, structured data and checkout over months of work together, plus the shipping, payment and import tooling behind it.. Lead Developer.

Heartbeat Pharmacy Platform

Medusa 2.14 / Next.js 16 / PostgreSQL

Employer

2024–present

Pre-launch
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.

Kleidarakos B2B & Papanikolaou Doors

Medusa B2B / Next.js 16 / Express + TypeORM

Client

2024–present

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.

Γηροκομείο Ζωσιμάδων Ιωαννίνων: Healthcare Ops Stack

Bun + Elysia / Hono / PostgreSQL 18

Volunteer

2024–present

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.

Komvos Connect

Fastify 5 / PostgreSQL 16 + Drizzle / Redis + BullMQ

Personal

2025–present

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.

Migraine Tracker

React Native 0.85 / Expo 56 / Express 5

Personal

2025–present

Pre-launch
A migraine-tracking mobile app whose export is real FHIR 4.0.1: attacks modelled as Observations coded in SNOMED CT and HL7 terminology, not ad-hoc JSON dressed up to look like it. iOS and Android, works offline.. Lead Developer.

Rorsa Tools

TypeScript / Node.js 20+ / Vertex AI Nano Banana

Open Source

2025–present

An MCP toolkit that lets Claude (and other AI agents) generate, edit, and process images at production scale. 27 tools, batch processing, GPU-accelerated background removal. The toolkit that built this very portfolio's image set.. Maintainer.

e-support Private KEP, Ioannina

Astro 7 / Tailwind v4 / Cloudflare Workers

Client

2026

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.

PGNI Hospital StorageManagement

Tauri 2 / Rust / React 19

Volunteer

2024–present

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.

TaskFlow

Fastify / PostgreSQL + Drizzle / Redis + BullMQ

Personal

2024–present

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.

Delivery Tracker

Fastify / PostgreSQL + PostGIS / Drizzle ORM

Personal

2024

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.
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