You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Aïssam AttiAA

Aïssam Atti

Solidity & Smart Contract Developer

€500/day
Lyon, FR
3-7 years

Average response time: 1 hour

About Aïssam

I build secure smart contracts and Web3 infrastructure for crypto protocols and startups.
What I do:

– Smart contract development (Solidity, Foundry) following security best practices;

– Web3 integrations & back-end (exchange APIs, indexers, on-chain data pipelines);

– Crypto bots & automation (market monitoring, execution, alerts).
I'm actively specializing in smart contract security through competitive audits (Code4rena / Sherlock). My approach: tested, documented code, designed to resist known attack vectors.
Remote, fast to respond. Let's talk about your project.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • freelance
    Web3 Backend & Automation Developer
    BANKING AND INSURANCE
    July 2025 - September 2025 (2 months)
    Lyon, France
    Built crypto trading bots and on-chain data pipelines using Python and Web3 libraries. Integrated exchange APIs for market monitoring, order execution and alerting, and developed scraping/indexing systems to aggregate on-chain and market data at scale. Focus on reliability, error handling and clean, maintainable code.
    Python Web3 FastAPI On-chain Data Automatisation
  • Personal Project
    Smart Contract Developer
    BANKING AND INSURANCE
    February 2024 - February 2025 (1 year)
    Lyon, France
    Designed and developed smart contracts in Solidity, tested with Foundry and built following security best practices (reentrancy protection, access control, input validation). Deployed and verified on-chain. Wrote a full test suite covering edge cases and known attack vectors before deployment.
    Solidity Smart Contract Foundry Web3 Security

Recommendations

Be the first to recommend Aïssam

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Licence Management des Entreprises
    Univ1
    2015
    Formation en management des entreprises avec une forte orientation business, stratégie et gestion de projet. Compétences développées : Gestion de projet Analyse des besoins clients Stratégie et développement business Organisation et pilotage d’activités Aujourd’hui appliquées dans le développement d’applications SaaS et mobiles, avec une approche orientée résultats et monétisation.

Skill set

Categories