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Hamalla F.HF

Hamalla F.

Developer

€250/day
Paris, FR
3-7 years
React Native
Next.js
API
PHP
Product Development

Average response time: 1 hour

Freelancer profile translated to English.
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About Hamalla

Are you managing your business on complex Excel files, disconnected tools, or manual processes that generate errors?

I don't just code an application: I build a true industrial business tool for you, inspired by my experience as founder and lead developer of the SaaS CertiSecure.fr.

What I bring to your project (from the CertiSecure experience):


**Multi-platform Architecture**: I develop universal applications (Web + Mobile iOS/Android) with over 85% shared code via Expo and React Native Web.



**Production-level Security**: Strict data isolation (multi-tenancy), automated file antivirus scanning (ClamAV), and secure JWT authentication.



**Automation & Documents**: Implementation of asynchronous workflows (notifications, emails, SMS) and generation of official PDF documents (contracts, certificates) with integrated electronic signature.



**DevOps & Infra Mastery**: I manage your deployment from A to Z on virtualized servers (Hyper-V, Ubuntu) with Docker, ensuring high availability and automated backups.

Why choose me?

Unlike a purely technical profile, I understand business challenges: subscription management (Stripe), regulatory compliance, and smooth user experience.

Result: A turnkey, highly secure tool capable of evolving with your growth without requiring a technical overhaul.

Need a high-performance business tool deployed quickly? Let's discuss transforming your idea into a concrete product.
Construction
Software Publishing
Education Companies
Energy and Electricity
Digital and IT Services

  • French

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • CertiSecure
    CertiSecure.fr — Founder & Lead Engineer
    SOFTWARE PUBLISHING
    January 2026 - Today (5 months)
    Paris, France
    Legal Document Generation:Creation of a PDF generation engine (Gotenberg) with a bi-partite electronic signature workflow (handwritten on mobile or via secure link) and timestamped sealing.

    **Marketplace & Tokens System**: Development of a token purchase and consumption system (Stripe Payment) with lead lifecycle management (Exclusive vs. Public) and automatic refunds via Webhooks.


    Asynchronous Processing:Implementation of Symfony Messenger (PostgreSQL transport) for managing notifications (Email Twig / SMS OVH) and background tasks (async Worker).

    Active Security:Integration of ClamAV for antivirus scanning of uploaded documents and anti-spam protection via reCAPTCHA v3.

    Analytics & SEO:High-performance showcase site on Next.js 16 (App Router) with a multi-step onboarding tunnel and integrated PostHog tracking.
    Next.js Fullstack PHP DevOps Marketing
  • HFT
    President
    SOFTWARE PUBLISHING
    February 2026 - Today (4 months)
    Paris, France
    I decided to launch HFT based on a simple observation: companies often have powerful tools that they underutilize, or lack specific tools tailored to their business.
    I bridge this gap by offering a dual approach. On one hand, by developing robust and secure SaaS applications. On the other, through HFT Academy, by ensuring that office fundamentals are mastered to unleash productivity.
    PHP React Native Fullstack DevOps Product Development

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