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Sacha CohenSC

Sacha Cohen

Full-Stack Web Developer Symfony / Angular

€450/day
2 projects
Marseille 8e Arrondissement, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sacha

Since I was very young, I've loved tech.

I started creating and became passionate about building websites at 15.
After high school, I earned my Master's degree in Computer Science while working on freelance projects.
I've had various professional experiences with companies of different sizes and types.

Today, I evolve at the pace of my freelance missions and my entrepreneurial projects.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Marseille 8e Arrondissement (up to 10km)

Experience

  • MetaMundo
    Senior Developer
    TECH
    December 2022 - Today (3 years and 7 months)
    As a senior freelance developer at MetaMundo, I am responsible for developing and maintaining the online marketplace.

    I also maintain and deploy new contracts on the Ethereum blockchain using Hardhat.

    Here are some examples of tasks I perform:
    👉🏼 Optimization and scaling of marketplace features
    👉🏼 Deployment of NFT contracts for new products imported to the marketplace
    👉🏼 Development of new features
    Symfony PHP MySQL AWS Amazon Web Services (AWS) AWS S3 Hardhat Solidity
  • The Nervous Club
    Blockchain Developer
    TECH
    December 2022 - January 2023 (1 month)
    I carried out this mission for a client as a freelance blockchain developer.

    She wanted to launch her NFT collection, so here's what I did for her:

    👉🏼 Development of an ERC721 contract
    👉🏼 Deployment on Mumbai testnet
    👉🏼 Production deployment on Polygon
    👉🏼 Minting of the NFT collection and listing on OpenSea
    NFT Solidity Truffle Blockchain Smart Contract Polygon JavaScript Node.js
  • Wess Soft
    Research and Development Engineer
    DIGITAL AND IT
    August 2022 - January 2023 (5 months)
    I worked for an NFT project called "Eye-C".

    We started from scratch, here's what I developed:
    👉🏼 Various smart contracts (details below) with Solidity and Truffle
    👉🏼 The API for the marketplace and users with Symfony
    👉🏼 The public marketplace with Vue.js and Nuxt.Js
    👉🏼 The back-office for users with EasyAdmin

    🦊 Blockchain:
    - Development of an ERC20 contract representing the project's cryptocurrency
    - Development of two ERC721 NFT contracts: one for our marketplace, another for the secondary market
    - I developed the smart contracts using an Upgradeable Proxy to allow updating contracts on the blockchain while preserving their data

    💾 API:
    - Enabling user registration and login management
    - Management of marketplace purchases/mints
    - NFT management
    - Email sending

    🖥️ Marketplace:
    - Homepage with various animations managed by SVGs and SCSS
    - NFT listing
    - Sales funnel with minting process
    - Registration/login, forgotten password, and account modification
    - Blockchain communication using web3.js
    Symfony PHP Solidity Vue.js Nuxt.js Truffle JavaScript Node.js MySQL Web3.js Web3 Blockchain Git Smart Contract Ethereum Symfony Framework Symfony 5 Symfony 6

Reviews

5.0

Out of 2 ratings

B

Benjamin

Numeah

Reviewed on 6/28/2023

Sacha was very professional and attentive. The project suits me perfectly. I recommend him.
S

Sabrina

GN SERVICES

Reviewed on 6/9/2023

I thank Sacha for his patience and professionalism. He advised and supported me throughout this mission and beyond. We will continue to use his services for website management and/or other modifications. I highly recommend his services to anyone, regardless of your level or needs.

Recommendations

FU
FU
Former user and 1 other person have recommended Sacha

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Education

  • Computer Science Designer Developer
    Élythe, Aix-en-Provence
    2019
    Formation concepteur développeur informatique. Au programme: HTML / CSS, PHP, SQL, C# / .NET, ainsi que la sécurité des sites web.
  • PHP/Symfony Back-end Application Developer
    OpenClassrooms
    Cursus développeur back-end en alternance pendant deux ans.

Certifications

Skill set

Categories