AI Software EngineerAthens / EU

Dimosthenis Gkontolias — AI products. Built for everyday use.

I build AI applications, data pipelines, and software for small businesses. Based in Athens, AUEB valedictorian, and founder of Quar.gr.

Check CV View my work

GitHub LinkedIn Demos Vibes

Dimosthenis Gkontolias smiling outdoors — **Dimosthenis**Based in Athens, Greece

AI product

TalkToGreekData

I built a way to ask questions about Greek economic data and get answers with charts.

Selected work

2026

AI application

TalkToGreekData.gr

Ask a question about the Greek economy. Get an answer grounded in data, with charts to explore it.

Works over 23,000 data points and 207 metrics.
Streams responses with SSE and can render 12 chart types.

Live

TalkToGreekData.gr homepage with English product overview and workspace preview

FastAPIReactTypeScriptGeminiRAGSSE

2025 - Present

Founder & developer

Quar.gr

Digital menus that cafe owners can update themselves. I build the product and support the businesses using it.

Serving 10+ cafes in production, with 300+ commits behind the product.
Admin panel supports drag-and-drop menu editing, images, multilingual content, and GA4 analytics.

Live GitHub

Quar.gr product homepage showing a QR menu phone preview

ReactTypeScriptFastifyFirebaseGA4Tailwind

More projects

Feb - Jun 2026

TrackSights OEM data pipeline

Provider-based data collection for official car configurator data and a depreciation model for automotive pricing.

2026

Demos Vibes

A Greek AI tools and workflows channel paired with a static resource hub for every video.

Other projects 5

2026

CSEventFinder

A high-recall tracker for computer science, startup, fintech, AI, developer, conference, and hackathon events in Greece.

2026

QR Style Studio

A client-side QR style generator with custom shapes, frames, logos, export options, and scannability safeguards.

2026

BoomAI

AI-powered code-review and auto-fixing CLI for C#/Unity projects using static analysis plus LLM patch planning.

2026

Nero Website

A polished cafe/bar/restaurant website for Nero in Neo Irakleio, built around real venue photography, fast menu/map actions, and QuaR-backed menu paths.

2025

AthensSecret VR/MR backend

Backend API for a multiplayer VR/MR game set around Athens secrets.

Experience

From an automotive data team in Denmark to building and running my own software business.

Check full CV

Education

AUEB · BSc Informatics
Valedictorian · GPA 9.15/10

Hackathon finalist · Hamburg & Athens

Feb 2026 - Jun 2026

Data Analyst Intern

TrackSights ApS · Denmark / Erasmus+

Worked in the data team on automotive OEM collection and depreciation modeling.

More about this role

Reverse-engineered configurator data for Audi, Hyundai, and Mercedes-Benz across BE, DE, DK, ES, FR, IT, NL, and SE.
Built provider-pattern scrapers and canonical Pydantic schemas, then moved JSON through GCS, BigQuery, and Dataform.
Added warehouse assertions and worked on a depreciation model trained over roughly 785k listings and 71 features, reaching R² = 0.946.

Jun 2025 - Present

Founder / Full-stack Engineer

Quar.gr · Athens

Building a production QR menu platform for real cafes and non-technical operators.

More about this role

Designed the product, admin UX, data model, deployments, and customer support loop.
Built multilingual menus, drag-and-drop editing, media handling, and analytics.
Learned to balance engineering polish with the messy reality of real users.

Jul 2025 - Oct 2025

Software Developer Intern

Dalia Labs FZE LLC · Dubai

Worked on dashboard frontend components and production UI features.

More about this role

Implemented frontend components and UI improvements for dashboard workflows.
Collaborated inside a fast-moving software team and shipped reviewed code.
Strengthened habits around component quality, visual polish, and maintainability.

May 2024 - May 2025

Website and app developer

Freelance / Medical sector · Remote

Built professional websites for healthcare practitioners and a Flutter patient-record app.

More about this role

Delivered client websites for doctors and medical professionals.
Built karteles_asthenwn, a Flutter app for patient medical records.
Handled requirements, delivery, support, and non-technical stakeholder communication.