DTHEO

Dimitris Theodoropoulos

Technical founder building QasperAI

I build products, talk to users, and take early-stage ideas from zero to real usage.

At QasperAI, we’re building the business registry and transaction layer for AI agents, starting with service businesses.

Businesses joined
100+
Customer messages
700+
Inquiries captured
70+

01 / The company

Building the business registry for AI

AI agents cannot reliably discover, understand, and transact with most service businesses because their information is fragmented, incomplete, or not structured for machines.

QasperAI gives each business an owner-controlled profile for services, pricing, availability, policies, and booking options. That information can power discovery and customer interactions across AI platforms, business websites, and Qasper itself.

I co-founded QasperAI and work across product, engineering, customer discovery, onboarding, partnerships, and go-to-market.

Visit QasperAI

Early signals

Evidence before scale

Early usage, not vanity metrics.

  • 100+businesses joined before monetization
  • 700+customer messages processed
  • 70+customer inquiries captured
  • 2 monthsto build the first MVP while working part-time

02 / Track record

Experience that shaped how I build

Before QasperAI, I spent more than five years building production software across gaming, market research, healthcare, and cybersecurity.

2024 — Present

Software Engineer

Kaizen Gaming

Owned frontend execution for a multi-month product initiative shipped across more than 20 markets.

2022 — 2024

Software Engineer

GWI

Led a company-wide migration from Yarn to pnpm, reducing CI build time by 40%, while building complex audience-planning products across multiple advertising platforms.

2020 — 2022

Logicea · Quintessential SFT

Earlier work

Built healthcare and cybersecurity interfaces at Logicea and backend services for a National Bank of Greece product at Quintessential SFT.

03 / Product evidence

Selected products

Before QasperAI, I took on freelance and independent product work alongside university and a full-time engineering role. These are three projects from that period.

Cordia Health mobile product interface showing its community feed

Mobile health

01

Cordia Health

A privacy-first mobile health product with encrypted data flows, realtime communication, and secure server-side infrastructure.

I helped take the mobile product from architecture through production delivery as its founding engineer.

  • Privacy
  • Mobile
  • Realtime
  • Infrastructure
JobNRoll mobile job-discovery interface

Employment platform

02

JobNRoll

A tourism employment platform designed for simple job discovery across different ages and backgrounds.

I owned the product roadmap, database architecture, application experience, and deployment.

  • Product
  • Mobile
  • Accessibility
  • Delivery
WeatherXM Explorer map and network statistics interface

Open source

03

WeatherXM Explorer

Open-source improvements to a live network used to explore more than 10,000 weather stations.

I improved bounty discovery and redesigned the filtering and map-overlay experience.

  • Open source
  • Maps
  • Data
  • UX

Independent perspective

What collaborators say

A few notes on ownership, product judgment, and how I work with a team.

Read four recommendations
Sam AlmasriSenior Product Owner @ Kaizen Gaming
I had the opportunity to work with Dimitris at Kaizen Gaming, where I served as the Product Owner for his team. Dimitris is a thoughtful and dedicated Front End Engineer who consistently contributed beyond his defined tasks. What I appreciated most about working with him was his focus on the bigger picture. He always took the time to understand the business perspective behind our work, which allowed him to make smart technical choices that delivered real value to the customer. He has a very pragmatic, results-oriented approach and approaches every task with a focus on finding a solution and delivering it well. Dimitris is a reliable team member who understands the importance of every feature in a product roadmap. He brings a positive and constructive attitude to his work, which makes him a great person to have on any team. I would gladly welcome the chance to work with him again.
Vasilis BekrisOwner of Job in Football
I really appreciated working with Dimitris on our project. He consistently provided solutions, was very supportive throughout the process, and made sure everything ran perfectly. A true professional and a pleasure to collaborate with.
Stavros KoutisCEO @ CrossBox Digital
Working with Dimitris felt like having an in-house teammate. Proactive, responsive, and laser-focused on getting things right—not just done. He consistently delivered high-quality work and was always willing to go the extra mile to ensure the success of the project.
George KaradakisFounder of CASpire
I had an idea for a student environmental group, but most developers quoted over €5,000, far beyond my budget. Then I found Dimitris. He took on the entire project, built the app from scratch in just one month, and exceeded every expectation. He kept supporting me with updates throughout the year—reliable, efficient, and truly committed. Highly recommended and, most importantly, a good person.

04 / Background

From engineering to building companies

I started coding at 12 and took my first full-time software-engineering role at 18 while completing a five-year engineering degree.

Today, I’m focused on building QasperAI and learning how to turn early technology into a product people repeatedly use.

Master of Engineering in Informatics and Computer EngineeringUniversity of West Attica
Read thesis

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Let’s connect

I enjoy meeting founders, investors, and operators working on ambitious products, AI infrastructure, and new forms of software distribution.

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