Freelancer profile translated to English.

Description

Ruby on Rails | React | Fullstack | Back End

Experienced Ruby / Ruby on Rails Developer with over **8 years of experience**, designing robust and innovative back-end solutions. Specializing in:

Development of complex web applications withRuby on Rails

High-performance and maintainableBack-end Architecture

Optimization of performance and scaling of web services

Integration ofAPIsand microservices

Expertise inPostgreSQLdatabases, high-performance data management

Methodologies:

Agile development

Unit and integration testing (RSpec, Minitest)

Continuous integration and deployment (CI/CD)

Git project management

Areas of Intervention:

Custom web applications

SaaS solutions

Refactoring and optimization of existing projects

Development of back-end services

Mastered Technologies:

Ruby, Ruby on Rails, PostgreSQL, Redis, Sidekiq, Docker, AWS, Heroku

My Services:

MVP:I can create secure, scalable, and easy-to-maintain applications to test and validate your proof of concept.

Web Applications:Create your custom web applications.

Mobile Applications:Develop cross-platform mobile applications with Flutter, tailored to your needs.

Third-Party API Integration:Connect your existing systems or integrate new functionalities with ease.

Features and Maintenance:Develop and customize your applications by integrating innovative features that precisely meet your users' specific needs.

Adaptable to your projects, I am available for short or long-term assignments. I am committed to maximum responsiveness and will reply to you as soon as possible.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km), Lille (up to 50km), Nice (up to 50km)

HotesseAI
Full Stack Developer, Product Manager
FASHION AND COSMETICS
January 2025 - February 2025 (1 month)
Dubaï, United Arab Emirates
Virtual Try-On Application with AI

As a full-stack developer, I designed and implemented HotesseAI, an innovative AI-based virtual try-on SaaS application. This solution allows users to virtually try on luxury clothing through a monthly credit system.

Architecture and Technologies:

I architected the application with a clear separation between:
-Frontend:React application with elegant and responsive user interfaces
-Backend:Secure and performant Ruby on Rails API
-Integrations:KlingAI (virtual try-on), Stripe (payments), Cloudinary (media)

Technical Achievements

Frontend Development
- Design of premium and responsive user interfaces
- Implementation of an intuitive virtual try-on module with real-time preview
- Development of a transparent account and subscription management system
- Integration of Stripe Elements for a seamless payment experience

Backend Development

- Building a secure RESTful API with Ruby on Rails
- Setting up a robust authentication system with Devise Token Auth and JWT
- Developing a complex business logic-based monthly credit management system
- Integration and optimization of the KlingAI API to minimize per-request costs
- Configuring cloud storage with Cloudinary for user media
- Implementing a comprehensive administrator interface with ActiveAdmin

Challenges Overcome

- Optimizing KlingAI API calls to reduce costs
- Securing the payment process
- Implementing an intelligent caching system to improve performance
- Implementing a scalable architecture capable of handling increasing user numbers
Ruby on Rails Ruby REST APIs React.js Stripe PostgreSQL artificial intelligence
The Packengers
Senior Full Stack Developer
LOGISTICS AND SUPPLY CHAIN
October 2024 - Today (1 year and 10 months)
Paris, France
As a freelance Ruby on Rails Back End Developer at ThePackengers, I contribute to the development of innovative solutions for this startup specializing in the logistics transport of valuable items.
Ruby on Rails Ruby PostgreSQL CI/CD Heroku Refactoring
Ellii
Full Stack Developer
EDUCATION AND E-LEARNING
September 2023 - March 2024 (6 months)
Paris, France
Languages:Ruby 3.0.3, SQL
Framework:Ruby on Rails 7.0.4
DB:PostgreSQL
Services:Sidekiq, Devise, Redis, Bugsnag, CircleCI, Stripe, Hotwire, Stimulus
Hosting:Scalingo
Architecture:1 monolithic application
RoR Achievements:
- Implementation of responsive design, allowing the application to be used on different devices with the same user experience
- Setup of automated tests, increasing code coverage to 80%.
- Creation of a continuous integration and deployment (CI/CD) pipeline
- Refactoring of existing code to improve reliability, scalability, and maintainability
- Development of a system to monitor application performance and alert stakeholders of any potential issues.
- Development of features to enhance user experience
Ruby on Rails Ruby Scalingo PostgreSQL Back-End Development Front-End Development Gitlab CI/CD Refactoring Rspec Web Integration

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Signup to reveal

Full Stack Ruby on Rails Development
Le Wagon Bootcamp
2017
Bootcamp pour devenir Developpeur Full Stack
Bachelor
EPITECH
2018
Programmation / développeur informatique, général

Antoine Wachowiak

Senior Ruby on Rails Developer | Back End

About Antoine

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