Djuradj Djuric

Belgrade

Founder & full-stack engineer · Belgrade

I build products from zero to production.

CTO & co-founder of Cognios. Six years of work, buried in layers. Scroll to dig through them.

  1. Layer 01 · 2026

    Now building

  2. Layer 02 · 2024

    Wallets and credentials

  3. Layer 03 · 2022

    Shops that sell

  4. Layer 04 · 2021

    Two million users

  5. Bedrock · Before 2020

    Archaeology, University of Belgrade

01 Excavated so far

Things I've built and still run.

Five products of my own, and one I helped grow to two million users. Open any of them for the full story.

  1. 01CogniosAI tutors built from real expert knowledge.Layer 01 · 2026
  2. 02ZASADWhat should I do in my garden today?Layer 01 · 2026
  3. 03SPØRAn onchain species that spreads phone to phone.Layer 01 · 2026
  4. 04StaraknjigaAn antique bookshop, in production since 2022.Layer 03 · 2022
  5. 05MystorLearn it. Plan it. Build it. Sell it.Layer 01 · 2026
  6. 06SolSeaOne of Solana's first NFT marketplaces. 2M+ users.Layer 04 · 2021

02 Also built

Client work & experiments

  1. 01

    Panther Wallet & Button Game

    Sui · Telegram

    A non-custodial wallet and a team clicker game, both living inside Telegram. 20K daily users at peak.

    Wallet Game
  2. 02

    Credentee

    Credentials · Solana

    Certificates issued and verified on the blockchain. Powers Coca-Cola HBC's Digital Academy certificates.

    Credentee Coca-Cola HBC
  3. 03

    Palata Nauke

    Generative AI

    Permanent AI installations: visitors become illustrated characters, or get a personal game generated from their answers.

  4. 04

    Virtus Wine Club

    Real-world assets

    Tokenized wine you can redeem for a real bottle, delivered to your door.

    Visit
  5. 05

    Coca-Cola × EXIT Festival

    Brand activation

    Limited festival merch paired with digital collectibles, distributed through SolSea.

  6. 06

    VR-All-Art

    WebXR

    Art exhibitions you can walk through, in the browser or in VR.

    Visit
  7. 07

    ALL.ART $AART launch

    Token launch · Solana

    The public token sale (IDO) behind the ALL.ART protocol, December 2021.

  8. 08

    SolGoal

    Hackathon · Solana

    Swipe-to-predict football on live World Cup data. Built for the TxLINE World Cup hackathon.

    Code
  9. 09

    Lamos

    Client · E-commerce

    Storefront, product gallery, admin dashboard and API for Lamos d.o.o., a Serbian company.

  10. 10

    Bookalike

    Prototype · Social

    A social network for readers, running on its own catalogue imported from the full Open Library dumps.

  11. 11

    Screenshot Redactor

    Tool · Local OCR

    A local-only app that reads LinkedIn screenshots with OCR, finds names and permanently redacts them before sharing.

03 Bedrock

Archaeologist turned engineer.

Before software, I earned a master's in archaeology at the University of Belgrade. It turned out to be good training: rebuild a whole system from fragments, then explain it clearly.

Since 2020 I've shipped production software for marketplaces, wallets, credentials, AI and e‑commerce, at ALL.ART and Digital Mind and on my own. Now I build my own companies end to end: product, design, frontend, backend, AI pipelines, payments and the servers they run on.

  • Next.js
  • React
  • React Native / Expo
  • TypeScript
  • Node.js
  • NestJS
  • MongoDB
  • Python
  • LLM pipelines
  • Solana
  • Sui
  • Stripe
  • AWS
  • Cloudflare
Years shipping to production
6+
Users reached
2M+
Peak daily users
20K
Own products live
4

04 Contact

Have something worth digging into?

Write to me

Open to selected collaborations, advisory and contract builds.

esc