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Haitem ZeghouaniHZ

Haitem Zeghouani

Fullstack developer | Ruby on Rails | React

€530/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Haitem

Hello! I'm Haitem, a Ruby on Rails fullstack developer with 8 years of experience, passionate about well-thought-out products, fluid interfaces, and tools that make code more robust and pleasant to maintain.

My journey began at HigheredMe, an international startup in education. There, I learned Ruby on Rails from an expert and participated in the complete design of a web platform used by students and universities worldwide. This first assignment immediately immersed me in an environment where code quality, performance, and user experience are key.

Since then, I've enriched my stack and worked on projects combining:

🔧 Backend
Ruby on Rails, PostgreSQL, Redis

REST APIs and external integrations (Mangopay, payment systems)

Realtime with ActionCable, Websockets

💻 Frontend
Stimulus.js for a minimalist and efficient approach

React.js for dynamic and scalable interfaces

Vue.js on certain component-oriented projects

Slim, Sass, Bourbon, Neatgrid

🚀 DevOps & Tooling
Docker / Docker-compose, Ansible, Makefile

CI/CD with CircleCI

Progressive infrastructure migration (dedicated server → Heroku / cloud services)

VM orchestration with Portainer

Tools: GitHub, Vim, ArchLinux/Ubuntu

⚙️ Quality & Product
Refactoring, modularization, linter setup (rubocop, slim-lint...)

A/B testing with the split gem + custom back office (Administrate)

Strong product and UX sensibility

📌 I am available for Ruby on Rails / React / Vue missions, whether it's to boost your existing stack, refactor a frontend part, or set up clean and scalable CI/CD.
  • English

    Fluent

  • French

    Native or bilingual

Can work on-site
Paris (up to 50km), Lyon (up to 100km)

Experience

  • HOSPIMEDIA
    Full Stack RoR / React Developer
    December 2023 - May 2024 (5 months)
    Lille, France
    initially developed in Ruby on Rails, towards solutions based on React, as part of the continuous improvement of the digital infrastructure.
    • Design and implementation of new features to optimize data classification and management within the agency.
    • Close collaboration with the development team to ensure a smooth and efficient transition to new front-end technologies.
    • Active participation in improving the user experience by integrating modern and performant React solutions.
  • GOLDAVENUE
    Full Stack RoR Developer
    RAW MATERIALS INDUSTRY
    January 2022 - May 2023 (1 year and 4 months)
    Genève, Switzerland
    Goldavenue is a B2C matchmaking platform in the
    precious metals domain, Technologies used Ruby On
    Rails 6/7, stimulujs, webpacker.
    • Mission carried out: creation of the silver landing page, front and
    back Migration of services to rails 7 Update of the
    backoffice Creation of a feature, repeat buy (auto-
    savings) Addition of google analytics 4 / mixpanel on the
    platform Work on the Back API because of the front migration to
    react
  • TSC
    LEAD Fullstack Developer
    DIGITAL AND IT
    January 2020 - October 2020 (9 months)
    Paris, France
    🤖 Creation of intelligent chatbots
    Development of a real-time chatbot in Ruby on Rails integrating Google's NLP via Dialogflow – ubot.care

    Omnichannel integration: Facebook, WhatsApp, websites via JS script

    Setup of a custom Back Office for customer service (member management, conversation tracking)

    🧪 Methodologies & collaboration
    Close collaboration with the CTO

    Adaptation to Agile & Waterfall methods depending on projects

    ⚙️ Infrastructure & deployment
    Setup of CI/CD pipelines on GitLab

    Deployment of environments via Docker and Kubernetes

    🕹️ Marketing & contests
    Design of an interactive chatbot for contests on Facebook

    🏋️‍♂️ Gym application
    Maintenance and evolution of a member application (payment management, feature additions, bug fixes)

    🌐 Community management for large accounts
    Missions carried out for Orange, SFR, Sosh via the Khoros platform:

    Development of components in JavaScript & Freemarker

    Management of staging/production environments

    🛠️ Technical Stack
    Languages & Frameworks: Ruby on Rails, React.js, JavaScript, Freemarker

    Infrastructure: GitLab CI/CD, Docker, Kubernetes

    UI/UX: Bulma, JS integration

    Tools: Dialogflow (NLP), Khoros, Facebook API, WhatsApp API

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Education

  • BTS SIO
    IRUP
    2016
  • Bachelor of Technology - BTech, Computer Science
    EPITECH Lyon
    2014

Skill set

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