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Full Stack Developer — Thessaloniki, Greece

Dimitris Triantafyllidis

I build things that are well-crafted and actually work.

Frontend-oriented, comfortable across the stack.

  • React
  • Next.js
  • TypeScript
  • Node.js
  • Python
Let's talkView workBlockchain

About

Full Stack Developer with 6.5+ years of experience, frontend-oriented but comfortable across the stack. I've worked across blockchain, healthcare, AI/ML, and e-government — mostly with React, Next.js, TypeScript, Node.js, and Python. I like building things that are well-crafted and actually ship, and I'm drawn to projects that push into new tech.

  • Blockchain
  • Healthcare
  • AI/ML
  • E-government
years experience
6.5+years experience
domains shipped in
4domains shipped in

Products

Things I own and ship

Products I build and run myself, rather than client work.

Alphastay.gr

Live
alphastay.gr
Screenshot of the Alphastay.gr homepage

Property platform for Thessaloniki — homes for sale and long-term rental, plus short-term rental management for owners letting on Airbnb and Booking.com.

Visit site

Selected work

Problems worth solving

A few projects across healthcare, the public sector, research and AI — what the problem was, what I built, and what it changed.

Healthcare booking & staffing platform

  • Healthcare
  • Auth
  • Multi-clinic
Problem
Clinics needed a reliable appointment and staffing system across multiple locations.
Built
Patient booking system (auth, scheduling), plus contributed to PraxisEins' multi-clinic platform relaunch, integrating a new clinic into the existing system.
Impact
Live system used by real clinics and patients.

React · Next.js · TypeScript · Redux · Material UI · Python · Flask · Docker

Booking system is private and authenticated, so there's no public link.

Tech

What I build with

Frontend-oriented, but the stack runs deeper than that.

  • 01 · What people touch

    Frontend & Mobile

    • React
    • Next.js
    • React Native
    • TypeScript
    • Tailwind CSS
    • HTML
    • CSS
    • shadcn

  • 02 · Systems behind it

    Backend & APIs

    • Node.js
    • Python
    • FastAPI
    • Flask
    • Express
    • BullMQ
    • API design

  • 03 · Where it lives

    Data & Infra

    • PostgreSQL
    • MongoDB
    • MySQL
    • Redis
    • Supabase
    • Firebase
    • Docker
    • Kubernetes
    • Vercel

  • 04 · Models in production

    AI & LLMs

    • OpenAI
    • Anthropic
    • Gemini
    • RAG / vector DBs
    • Forecasting & time-series

  • 05 · Chains and contracts

    Blockchain

    • Hyperledger Besu
    • Fabric
    • Quorum
    • Chainlink
    • Foundry
    • Ethers / Wagmi
    • Web3

  • Tooling

    The bits that sit around all of the above.

    • Cursor
    • Resend
    • Stripe
    • Git
    • Google Analytics

Companies I've worked with

  • UBITECH
  • EUIPO
  • PraxisEins
  • Quality & Reliability S.A
  • CERTH
  • 3NS.ai
  • SmartMoves

Contact

Tell me what you're building.

Pick whichever fits — it opens an email with the subject filled in.

Email meGitHubLinkedIn

dimitrios.triantaf@gmail.com · Thessaloniki, Greece