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Samuel RoySR

Samuel Roy

fullstack react.js node.js Elixir Golang

€670/day
32 projects
Pau, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Samuel

Developer with nearly 20 years of experience, I am characterized by my autonomy and my ability to integrate quickly into any team (even English-speaking).


Curious and passionate, I have explored a wide range of technologies: web applications, chatbots (NLP, State Machines), system projects in Go/C++, speech synthesis, object detection... and now AI in all its forms.


Fullstack Expertise
  • Native macOS: Swift/AppKit for integrated system applications (menu bar, notch, advanced system interactions).
  • Front: React/Preact, Expo, Next.js — one codebase, all screens.
  • Back: Phoenix (Elixir) for high-performance real-time, Go for ultra-fast micro-services, NodeJS for delivering quickly and well.
  • Ops: GCP, Docker, GitHub Actions, Vercel, Fly.io.
Recent Projects* Native macOS AI assistant integrated into the notch (Spotlight meets GPT, French version) — Swift/AppKit with advanced system integrations.
  • 100% local meeting recorder with client-side Whisper/Parakeet transcription — total confidentiality, zero cloud.
  • OpenRouter-style AI router: automatic request routing based on the type of request, fallbacks in case of provider errors
  • Retail platform: €120 million in revenue, 99.99% availability — development + infrastructure.


Mastered Technologies
  • Languages: Swift (macOS/iOS), JavaScript ES6+, Node.js, Elixir, Go
  • BDD: PostgreSQL, MySQL, SQL Server, Redis
  • Frameworks: AppKit, Phoenix, Express, React/Next.js, Expo
  • DevOps: Docker, GCP, GitHub Actions, Vercel, Fly.io

In summary: ambitious projects, performance constraints, critical issues — this is my playground!
  • English

    Native or bilingual

  • French

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • HeyTwist
    Developer
    DIGITAL AND IT
    April 2018 - April 2019 (1 year and 1 month)
    Pau, France
    HeyTwist.com transforms any written content online into an audio story. Our audio stories bring written content to life by combining the latest text-to-speech technologies, effects, and soundscapes. You can listen to anything online.

    I am in charge of:
    - developing the front-end of the application (Next.js / React.js)
    - deploying services on Zeit.co and Google Cloud
    - developing integrations with TTS services (Amazon Polly, Voicery)
    - designing content delivery services (streaming mp3 and HLS)
    - creating an automated mixing system
    - developing the text analysis and formatting service
    Node.js Next.js React.js PostgreSQL Golang
  • Botmatic
    Developer
    DIGITAL AND IT
    August 2017 - December 2018 (1 year and 4 months)
    Pau, France
    Botmatic is a chatbot development platform. We have created a unique editor where writing is the only thing to do to create an exceptional conversational experience.

    I am in charge of:
    - developing the editor
    - integration with third-party services (Recast.ai, AJStage, BoondManager)
    - developing the open-source integration system (https://github.com/botmatic)
    - developing the dynamic state machine
    Elixir Chatbot Node.js React.js PHP HTML5 Machine learning NLP TTS
  • SPS Formation
    Full-Stack Developer
    EDUCATION AND E-LEARNING
    July 2016 - March 2017 (8 months)
    Pau, France
    Creation of an online educational monitoring and course planning and evaluation space.

    I was in charge of:
    - complete project management,
    - client relationship,
    - developing the back and front-end
    - developing the front and back office
    - developing a mobile version of the service for the front office
    PHP 5 SQL JavaScript jQuery Web Project Management

Reviews

4.7

Out of 24 ratings

H

Henri

A World For Us (Digiforma)

Reviewed on 12/2/2019

Excellent work, very competent, efficient and detail-oriented! We have been collaborating successfully for 10 months on the significant acceleration of our roadmaps.
ThibaultT

Thibault

Growthfamily

Reviewed on 12/14/2018

Another mission accomplished brilliantly. Thank you Gaël!

Recommendations

FU
Allan P.AP
Thibault BonnefoyTB
+1
Former user and 3 other people have recommended Samuel

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Education

  • Titre Professionnel Développeur Logiciel
    GRETA Sud Aquitaine
    2016
    Formation professionalisante qui m'a permis de confirmer mes compétences de m'apprendre à les utiliser de manière professionnelle. Conception de système d'information Développement Web (PHP POO, Java, Javascript, HTML5, CSS3) Développement Mobile (Android en Java) Gestion de projet, méthode Agile
  • Formation Javascript
    GRETA Sud Aquitaine
    2017
    Formation de perfectionnement en Javascript Programmation Orientée Objet en ES6 Développement front-end avec AngularJS Développement back-end avec Node.js Développement mobile avec Cordova Animations dans le canvas, jeux vidéo 2d Gestion du offline, synchronisation des données utilisateur au retour de la connexion

Skill set

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