# Aleksander Jeżowski

[@ale\-jez](https://hacklab.so/ale-jez)

Aleksander Jeżowski is Artificial Intelligence Engineer at jtendo and Co\-Founder at HardCounter, based in Warsaw, Poland. No AI coding activity was synced in the last 30 days.

AI engineer at jtendo and HardCounter co\-founder\. Builds rapid AI prototypes while studying Computer Science and Information Systems\.

Location: Warsaw, Poland

Joined: 2026-09-06

1 followers · 3 following

## Links

- [GitHub](https://github.com/Ale-Jez)
- [LinkedIn](https://linkedin.com/in/aleksander-jezowski)

## AI usage (All time)

Total tokens: 370,192,278

| Harness | Tokens | Share | Most-used model |
| --- | ---: | ---: | --- |
| Codex | 159,137,195 | 43% | gpt\-5\.6\-sol |
| Claude Code | 152,346,947 | 41.2% | claude\-opus\-5 |
| Antigravity | 58,708,136 | 15.9% | gemini\-3\.1\-pro |

## Accomplishments

### [Aqua\-Shop: aquarium e\-commerce web app](https://github.com/Ale-Jez/Aqua-Shop)

Full\-stack e\-commerce web application for aquarium enthusiasts, built with Python 3\.12 and Django and developed as a capstone project for the Web Application Programming course at Warsaw University of Technology\. Published on the member's GitHub account; the README does not name individual authors\.

### [Hackengersi: autonomous trash sorting robot](https://github.com/Ale-Jez/Hackengersi)

Repository for the Hackengersi team's entry to the 2026 Alien Bazaar Hackathon; its README is titled 'Bin There, Sort That \- Autonomous Trash Sorting Robot'\. Published on the member's GitHub account; individual team roles are not stated\.

### [IML\-PW: machine learning voice analysis](https://github.com/Ale-Jez/IML-PW)

Machine learning voice\-analysis project; the README says the repository contains a project focused on voice analysis using machine learning methods\. Primary language is Jupyter Notebook and the repository has 2 stars\. Published on the member's GitHub account; individual contribution is not stated\.

### [SOP\-materials: Operating Systems course materials](https://github.com/Ale-Jez/SOP-materials)

Public repository of materials for the Operating Systems 1 and Operating Systems 2 courses at Warsaw University of Technology\. Published on the member's GitHub account; the member's role in the courses is not stated\.

### [Matlab\-Notes: MATLAB notes for Numerical Methods](https://github.com/Ale-Jez/Matlab-Notes)

Obsidian vault explaining Matlab for the Numerical Methods 1 and 2 courses at Warsaw University of Technology\. Published on the member's GitHub account\.

## Experience

### Co\-Founder — HardCounter

2026\-03 – Present

Warsaw, Poland

Co\-founded a competitive AI hackathon team\. Focuses on rapid MVP prototyping, AI problem\-solving under tight deadlines, and corporate technology pitching\. The team aims to develop into a registered technology foundation\.

### Artificial Intelligence Engineer — jtendo

2025\-07 – Present

Warsaw, Poland

AI engineering role based in Warsaw, begun in July 2025, following an earlier Artificial Intelligence Researcher appointment at jtendo in August 2023\.

### Math Tutor — Self\-Employed

2023\-06 – 2026\-06

Delivered personalized mathematics classes across different levels of education\.

### Artificial Intelligence Researcher — jtendo

2023\-08 – 2023\-08

Warsaw, Poland

One\-month Artificial Intelligence Researcher appointment at jtendo in Warsaw in August 2023\.

## Education

### Bachelor of Engineering studies in Computer Science and Information Systems — Politechnika Warszawska

2023\-10 – Present

Computer Science and Information Systems programme begun in October 2023, with expected completion in 2027\.

### Secondary education — LXIV LO im\. Stanisława Ignacego Witkiewicza "Witkacego"

Attended the Warsaw school from 2019 to 2023\.