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Sciacca AlexandreSA

Sciacca Alexandre

Full-Stack Engineer | React, NestJS, Go, Solidity

€500/day
Bastia, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Sciacca

Self-taught with over 10 years in production. I build end-to-end products: from cloud infrastructure (Kubernetes, Terraform) to smart contracts (Solidity, Foundry), including frontend (React, Next.js) and backend (NestJS, Go).

What I concretely bring:

NestJS/React architectures that scale, tested in production on high-traffic platforms
A complete mastery of the chain: from Solidity smart contracts to Kubernetes/Terraform infrastructure, including APIs and React frontend
A capacity for total autonomy in remote work — I deliver, I communicate, I self-manage
My favorite playground: platforms that handle data, traffic, and money — affiliate marketing, tracking, DeFi, B2B SaaS. I'm used to regulated environments (HDS health, crypto KYC) and distributed microservices architectures.

Main stack: TypeScript, React, Next.js, NestJS, Go, Solidity, Foundry, Viem, Wagmi, Docker, Kubernetes, Terraform, PostgreSQL, MongoDB, NATS, Redis, GraphQL, AWS, GitHub Actions.

Available for long-term assignments or fixed-price projects.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Plateforme Fintech/Affiliation
    Fullstack Architect
    BANKING AND INSURANCE
    April 2024 - Today (2 years and 3 months)
    Paris, France
    🎯 Situation: A crypto/fintech startup needed to create a complete, scalable, and secure affiliate platform, with no existing technical architecture or smart contracts in production.

    📋 Task: As the sole Fullstack Architect, design and develop the entire system—from cloud infrastructure to Solidity smart contracts—in complete autonomy.

    ⚙️ Action:
    - NestJS + NATS microservices architecture for inter-service communication
    - Complete cloud infrastructure with Kubernetes / Terraform / Skaffold
    - Solidity smart contracts deployed and auditable in production
    - Fullstack development React + NestJS + MongoDB (frontend, APIs, database)

    ✅ Result: Platform in production for over 2 years, stable microservices architecture, active on-chain smart contracts, crypto/fintech affiliate system operational at full capacity.
    NestJs React.js NATS Solidity Typescript
  • Freelance
    Fullstack & Blockchain
    February 2022 - December 2024 (2 years and 10 months)
    🎯 Situation: As a freelance full-stack & blockchain developer, I had to work on various complex projects—affiliate platforms, DeFi, NFTs, AI, real-time apps—for clients with high technical demands and tight deadlines.

    📋 Task: Handle the end-to-end design, development, and delivery for each project, in complete autonomy, covering backend, frontend, smart contracts, and infrastructure.

    ⚙️ Action:
    - Affiliate platform: multi-channel tracking, conversion management, real-time analytics dashboards
    - Collaborative canvas pixel (like r/place): real-time interactions via WebSocket, managing thousands of simultaneous users
    - Solidity smart contracts (ERC-20, ERC-721, staking, vesting) with Foundry tests and multi-chain deployment
    - In-house AI framework: autonomous agent orchestration, LLM integration, processing pipelines
    - Multi-chain DeFi dashboard: protocol aggregation, position tracking, and custom alerts
    - Complete NFT dApps: minting, marketplace, staking, yield optimizer
    - Reading PWA: offline sync, annotations, personal library management
    - Booking platforms: dynamic calendar, Stripe payments, multi-establishment management

    ✅ Result: 8+ projects delivered in full autonomy over 2 years and 10 months, covering blockchain, AI, real-time, and B2B SaaS—complete stack React, Next.js, NestJS, Go, Solidity, Foundry, MongoDB, PostgreSQL, Docker.
    Node.js Solidity GO MongoDB React.js
  • Les Éditions Corses
    DevOps Developer
    February 2017 - July 2020 (3 years and 5 months)
    Corsica, France
    🎯 Situation: A Corsican communication agency developing websites and web apps, with an aging proprietary CMS (PHP5) requiring a complete overhaul, and a need to upskill the team.

    📋 Task: As the sole DevOps Developer, modernize the technical infrastructure, refactor the CMS single-handedly, develop new e-commerce features, and train new hires.

    ⚙️ Action:
    - Complete solo refactoring of the proprietary CMS under Symfony4 (PHP5 → Symfony4)
    - Creation of websites with the in-house CMS (PHP5 / CSS / JS)
    - Development of a gift voucher system for e-commerce clients
    - Integration of PrestaShop stores and network administration
    - Setup of production servers on Debian + Plesk
    - Training new developers on the CMS and Symfony

    ✅ Result: CMS fully modernized and delivered solo in 3 years and 5 months, server infrastructure stabilized, team trained and operational on the new stack.

Recommendations

BY
Fabrice PayetFP
Belhadi Youssef and 1 other person have recommended Sciacca

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Education

  • BTS IRIS
    Lycée de montesoro
    2014
    BTS IRIS

Skill set

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