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Juiceee JuiceeeJJ

Juiceee Juiceee

Backend & Blockhain developper

700 €/jour
Nancy, FR
3-7 ans

Délai de réponse moyen : 1h

À propos de Juiceee

Hello,

Are you looking to deploy a Solana project that is fast, secure, and technically flawless?

I am a passionate developer from École 42, specializing in the Solana ecosystem for over 2 years. My expertise goes beyond code: I build high-performance infrastructures designed to handle heavy load, with a strong focus on latency, scalability, and reliability.

Over time, I have also built a strong network within the Solana ecosystem, with connections to some of its leading players, from Jupiter to Triton, Jito, and the Solana Foundation.

Why work with me?

Proven expertise: Winner of the Colosseum Breakout Hackathon and active member of Superteam France.

Extreme performance: I am currently working on infrastructure capable of processing transactions in under 10 ms. I know how to optimize smart contracts to reduce latency, costs, and technical risks.

Strong ecosystem network: Connected with key Solana players, I understand the technical standards, opportunities, and expectations of this fast-moving ecosystem.

Product vision: Having launched my own projects, I understand business needs, go-to-market constraints, and the importance of building reliable products from day one.

What I can do for you:

Secure smart contract development in Rust, Anchor, or Pinocchio.

Full dApp development, front-end integration, and API creation.

Transaction optimization and high-frequency trading bot development.

High-performance infrastructure architecture for Solana projects under heavy load.

Let’s discuss your project and see how we can push it to the top of the Solana ecosystem.

TG: @chainjuiceee
  • Français

    Bilingue ou natif

  • Anglais

    Capacité professionnelle complète

Accepte de travailler sur site
Nancy (jusqu’à 50 km)

Expériences

  • Veintree SAS
    Blockchain Engineer
    EDITION DE LOGICIELS
    avril 2026 - Aujourd'hui (2 mois)
    Conception et développement d’un système d’authentification post-biométrique basé sur l’analyse du réseau veineux palmaire, atteignant zéro faux positif sur plus de 42 millions de tests.

    Mise en place d’un mécanisme de génération de tokens cryptographiques à usage unique à partir de scans infrarouges des veines de la main, supprimant totalement le besoin de stocker des données biométriques sensibles.

    Intégration de la blockchain Solana en TypeScript pour l’ancrage cryptographique de documents, permettant un horodatage infalsifiable et une preuve d’authenticité immuable avec une finalité en moins d’une seconde.
    Typescript Solana Intégration d’une API externe Back-End development
  • Launchpad.Trade
    CTO & Backend Developper
    EDITION DE LOGICIELS
    novembre 2025 - avril 2026 (5 mois)
    Developed high-performance trading API in Rust with sub 40ms transaction execution
    Implemented atomic MEV bundles for guaranteed multi-transaction execution on Solana
    Optimized instruction weight to maximize operations per transaction
    Rust API Platform Amélioration de la performance Back-End development Solana
  • Synto
    Co-founder & Blockchain Engineer
    mars 2025 - octobre 2025 (7 mois)
    Winner Colosseum Breakout
    Led partnerships, managed grant applications, and handled Twitter communications
    Built and deployed 30+ onchain tools across 10+ protocols (incl. Solana) Integrated tools with Solana's crypto primitives and ecosystem protocols
    Grew Synto to 600+ monthly sessions and 150+ unique wallets
    Solana Back-End development Typescript artificial intelligence

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