# Legatia

[@Legatia](https://hacklab.so/Legatia)

Legatia is Head of Software Engineering at Infinity Tech Group and Co\-Founder at DeviceStamp, based in Poland. No AI coding activity was synced in the last 30 days.

Software engineering leader at Infinity Tech Group and DeviceStamp co\-founder\. Builds agentic infrastructure, DeFi and on\-chain coordination\.

Location: Poland

Joined: 2026-07-13

0 followers · 0 following

## Links

- [Luma](https://luma.com/user/usr-imvOZS011KL6WKR)
- [GitHub](https://github.com/Legatia)
- [LinkedIn](https://linkedin.com/in/guanyi-tobias-du)
- [X](https://x.com/letbdu)

## AI usage (All time)

No activity in this period.

## Accomplishments

### [01Barter / Barterium](https://legatia.github.io/)

A 0x01 marketplace project with a typed SDK, API and bilateral EVM settlement \(TypeScript, Hono, Solidity\)\. Scoped agent mandates, replay protection and EIP\-712 signatures keep asset owners in control of acceptance and settlement\. Role: leads the project, per the personal site\.

### [PartTimer](https://legatia.github.io/)

A launchpad with Solidity escrow, Uniswap v4 hooks, fee accounting and time\-bound NFT custody \(Solidity, Uniswap v4, TypeScript\)\. Role: contributor\. The personal site notes the current launchpad contracts are a development implementation\.

### [0x01 Treasury Watch](https://legatia.github.io/)

A Solana monitoring agent that classifies treasury and team\-wallet flows, creates evidence cards and assembles periodic digests\. Listed on the personal site as part of the member's work under the 0x01 umbrella\.

### [Rondo](https://legatia.github.io/)

An elder\-support product that brings a Polish landing page and a family dashboard together\. Role: contributor, per the personal site\.

### [swagpay](https://github.com/Legatia/swagpay)

Event swag printed locally and paid in stablecoins \(USDC/EURC on Arc\), with an AI agent running each order\. TypeScript repository under the member's GitHub account\.

### [OuroC](https://github.com/Legatia/OuroC)

A fully on\-chain, compliance aligned subscription tool for Solana, as described in the repository\. Listed under the member's GitHub account; the member's individual role is not stated\.

### [Registrai / Arc](https://legatia.github.io/)

Oracle infrastructure with signed attestations, dispute handling and a reference Warsaw real\-estate feed \(Solidity, TypeScript, Next\.js\)\. Listed as a project on the personal site; the member's individual role is not stated\.

### [Sylla](https://legatia.github.io/)

A personal\-agent layer with approved memory, OAuth\-authenticated MCP tools and durable task orchestration across model clients \(MCP, PostgreSQL, Solana\)\. Listed as a project on the personal site; the member's individual role is not stated\.

### Backend, cloud, cybersecurity and risk coursework

Lists IBM Back\-End Development, Google Cloud Digital Leader Training, IBM Cybersecurity Analyst, Risk Management, and Preparing for Google Cloud Certification: Cloud Engineer specializations\. These are the listed training programs; no passed Cloud Engineer certification is inferred\.

## Experience

### Head of Software Engineering — Infinity Tech Group

2026\-04 – Present

Warsaw, Poland

Heads software engineering at Infinity Tech Group from April 2026\. The earlier personal\-site InfinityTech affiliation is the same reviewed organization\.

### Co\-Founder — DeviceStamp

2025\-10 – Present

Co\-founder of DeviceStamp, begun October 2025 and listed as ongoing\.

### Campus Ambassador — ICP HUB Poland

2025\-08 – 2025\-12

Warsaw, Poland

Supported communication and event organization as campus ambassador\.

### Mobile QA Tester and Local Operation Specialist — WE17 PTE LTD

2024\-07 – 2025\-04

Warsaw, Poland

Mobile quality\-assurance testing and local operations role, July 2024 through April 2025\.

### Full\-stack Developer — Cognizant

2024\-10 – 2024\-12

Warsaw, Poland

Full\-stack development role during October–December 2024\.

### LQA Technician — Testronic

2024\-03 – 2024\-07

Warsaw, Poland

Localization QA technician role from March through July 2024\.

### Web Developer — Luckybomb, LLC

2022\-09 – 2023\-09

Seattle, United States

Web development role from September 2022 through September 2023\.

## Education

### 42 Warsaw program — 42 Warsaw

2024\-12 – 2026\-03

Warsaw, Poland

42 Warsaw program attendance, December 2024 through March 2026; distinct from the earlier C Piscine\.

### C Piscine — Computer Science — 42 Warsaw

2024\-08 – 2024\-09

Warsaw, Poland

C Piscine in Computer Science, August–September 2024\.

### Mechatronics / Automotive Engineering — Warsaw University of Technology

2019\-10 – 2022\-04

Warsaw, Poland

Studied Mechatronics / Automotive Engineering as independently recorded on the personal site; LinkedIn provides October 2019–April 2022 university dates\.