Hi, I'm Nezzar

Fullstack Engineer
Founder

Currently located in Toulouse, France, I build things I enjoy using. Currently in between traditional web work & building fun onchain products.

Strava

Experience

7 roles
ARTS Innovations

ARTS Innovations

Apr 2026 – Jun 2026

Full Stack Engineer (Freelance)

  • Sole engineer on a document-traceability platform for the aerospace industry: a multi-tenant Next.js / TypeScript app taken from requirements and architecture through testing to production.
  • Built the security-critical UI over a permissioned Ethereum network (Hyperledger Besu via viem), with signing keys held in Web3Signer and never exposed to the client.
  • End-to-end encryption, controlled sharing flows and exhaustive audit trails; client-side state and error handling designed around operations that must never silently fail.
  • Delivered under GDPR and PART-IS (EASA / ISO 27001).
Superfluid

Superfluid

Jan 2024 – Dec 2025

Freelance & Builder Program

  • Owned the interfaces external integrators build against: the TypeScript SDK, data dashboards, documentation and examples.
  • Built dashboards over continuous onchain streams: indexed protocol data aggregated and rendered in real time, with the caching and server-state sync that keeps it responsive.
  • Fully async, distributed international team, with specs, RFCs and code review as the primary coordination mechanism.
Peanut

Peanut

Sep 2024 – Dec 2024

Full Stack Developer (Freelance)

  • Built frontend features and wallet integrations for link-based crypto payments.
  • Implemented token transfer and claim flows across multiple EVM chains.
Futures Factory

Futures Factory

2022 – 2023

Full Stack Developer

Led a collection protocol end to end: a Next.js front-end with real-time 3D (Three.js), wagmi wallet flows and a fair-reveal sale mechanism.

Sismo

Sismo

2021 – 2022

Full Stack Developer

Built a dApp for ENS subdomain distribution and governance-token minting, with attestation and reputation data modelling.

Theodo

Theodo

2020 – 2021

Full Stack Developer

React / TypeScript dashboards for enterprise clients, in agile teams.

La Pilule Rouge

La Pilule Rouge

2018 – 2020

Full Stack Developer

Built interactive web experiences and immersive digital products.

Projects

Founder
0xSlots

0xSlots

2026 – Present

Founder (previously AdLand)

  • A composable primitive for collective onchain ownership: slots are continuously priced and always for sale under Harberger taxation, so ownership stays liquid and other protocols can compose on top.
  • Built alone: Solidity (Foundry, Base), an indexer and a Next.js front-end.
Astroblock

Astroblock

2024 – Present

Founder

  • An in-feed social mini-app that drew thousands of players coordinating onchain against a contract I wrote.
  • Real wallet-interaction load, in a surface where the whole flow has to survive inside a social feed.

ETHGlobal hackathons: prizes in Lisbon, Prague, Paris and Brussels; a working product shipped in 48 hours each time.

Education

École 42

Paris

Wild Code School

Lille

BSc Microbiology, minor Astrobiology

Pennsylvania State University, USA

French native · English fluent: a five-year US degree and five years of daily async work in English.