Senior Software Developer · Thessaloniki, GR
Senior developer and freelancer — from no-code AppSheet business systems to full-stack TypeScript web and mobile apps, with applied machine learning on the side. Computer Science, Aristotle University of Thessaloniki.
About
I'm a senior developer based in Thessaloniki with a Computer Science degree from Aristotle University. At Sonorus Consulting I build extremely customizable internal apps for clients around the world — talking to those clients daily and turning fuzzy requirements into systems people rely on. My range runs from no-code AppSheet and Airtable builds, through full-stack TypeScript apps — web, mobile and offline-first PWAs on Supabase and Postgres — to applied machine learning and published research. I like owning a project end to end: the data model, the interface, and the last mile of getting it into someone's hands.
Experience
Building extremely customizable internal apps for clients worldwide, in daily communication with the clients and the team — from data model to rollout.
Managed, operated and maintained major Business and Management Information Systems, applying modern Information Science to keep critical systems running.
Developed Android apps for clients worldwide using Java, JSON, REST APIs, video streaming and relational databases — including shipping a solo app to the Play Store.
Selected work
A no-code platform for building internal business tools on top of your own database — a fast visual builder with AI-assisted app generation, a formula language, server-enforced roles and permissions, and offline-first published apps.
A booking and AI-design platform for tattoo artists and their clients — artist discovery on a map, appointments with automated deposits, and AI-generated tattoo designs. Payments, email and maps built in.
A cross-platform mobile app for runners exploring new cities — discover curated running routes on native maps with live GPS tracking, backed by Supabase auth and data.
Printed videos come to life: get your videos ready to be printed, then reproduce them by scanning the photo with your phone. Designed, built and released solo to the Play Store.
Two plugins for the “Jarvis” assistant: an Amazon/eBay search that finds a typed term across both stores, and a health plugin that computes BMI and daily caloric intake with weight-goal targets.
Applying topic-modeling algorithms to the free-text final answers of students in Greek Massive Open Online Courses — surfacing the themes hidden in thousands of responses.
Skills & tools
TypeScript
React
Next.js
React Native · Expo
Tailwind CSS
PWA · offline-first
Supabase
PostgreSQL
NeonSQLREST API
Node.js
AirtableNoloco
Glide
Apps Script
Google Sheets
Make
Python
TensorFlow · Keras
Claude
OpenAI
Java · Android
Git · GitHub
LinuxContact
Let me know if you have any awesome ideas or projects we can build together — freelance and contract work in apps, automations and internal tools. Tell me what you need and I'll get back to you.