Freelancer profile translated to English.

Description

Lead Full-Stack SaaS, Web & Mobile Developer | C#, .NET, React, TypeScript, SQL, Websites & E-commerce

Experienced Full-Stack Developer, I design, develop, and optimize SaaS applications, websites, web and mobile applications, as well as online stores for startups, VSEs, SMEs, and individuals. Expert in C#, .NET, ASPX, SQL Server, React, TypeScript, JavaScript, jQuery, HTML5, CSS3, and React Native, I create high-performing, secure, and scalable digital solutions capable of effectively resolving bugs and technical issues, while ensuring a fluid and intuitive user experience.

Key Experiences

Lead Developer – Dailybiz (formerly Idylis) – SaaS / ERP for VSEs/SMEs

• Design and development of a full-web SaaS software with CRM, invoicing, sales management, accounting, project management, and inventory modules.

• Creation of REST/SOAP APIs for integration with ERP, CRM, online payment services, and third-party applications.

• Optimization of SQL Server queries, business scripts, and stored procedures to improve performance, stability, and security.

• Bug management, resolution of technical issues, maintenance, and continuous improvement.

• Technical supervision, implementation of unit tests, CI/CD, and Agile/Scrum methodology.

• Contribution to the transformation of Idylis into Dailybiz, used by over 5,000 clients and 15,000 users.

Front-End / Mobile Developer – English Training Platform

• Development of a cross-platform mobile application and an interactive website with React, TypeScript, and JavaScript.

• Creation of interactive components: quizzes, progress tracking, videos, exercises, and e-learning modules.

• Front-end optimization and responsive design for fluid navigation on desktop and mobile.

• Development of custom scripts, integration of REST APIs for user and registration management.

• Bug management, performance optimization

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Paris (up to 50km)

XEFI France
Lead Full-Stack (Back/Front) Developer
DIGITAL AND IT
January 2024 - Today (2 years and 7 months)
Paris, France
Lead Developer – Dailybiz (formerly Idylis), SaaS management software for VSEs/SMEs
(Project carried out for Dailybiz, formerly Idylis, a cloud-based management platform)

Design, development, and optimization of the Dailybiz software, a full-web SaaS solution for VSEs and SMEs. Before its rebranding, this project was called Idylis and aimed to simplify online business management through accessible and modular tools.

Key Achievements:
• Design of the software architecture based on .NET Framework/.NET Core, robust, modular, secure, and easily scalable.
• Development of REST/SOAP APIs to integrate CRM, sales management, accounting, invoicing, and project management modules with third-party services (ERP, external CRMs, payment gateways).
• Creation and optimization of web modules: CRM (client tracking, prospecting), invoicing, sales management, accounting (tax return, VAT, cash flow), project management, inventory management – all accessible via internet browser.
• Code rewriting / Migration and improvement of business scripts, automation of recurring tasks to simplify user experience and maintenance.
• Bug fixing, resolution of production technical issues, optimization of SQL queries and stored procedures in SQL Server to improve performance and stability.
• Implementation of unit tests, continuous integration (CI/CD), code reviews, and Agile/Scrum methods to ensure quality and accelerate deployments.
• Collaboration with business teams to make the tool intuitive, user-friendly, and accessible to non-technical clients (individuals, VSEs, SMEs).

Technologies and environments used:
C#, VB.NET, ASPX, .NET Core, SQL Server, JavaScript (ES6+), jQuery, HTML5, CSS3, REST, SOAP, Visual Studio, Git/GitHub, CI/CD, Agile/Scrum
Pratique de la Méthode Agile SCRUM Correction de bugs Full-Stack Development Base de données Processus métier
Cabinet action
Front-End / Mobile Developer – English Training Website and Application
DIGITAL AND IT
June 2023 - August 2023 (2 months)
Paris, France
In this role, I participated in the development of a web and mobile platform for offering English training to professional and individual users. The goal was to make learning accessible via web browser and mobile application (iOS/Android), with a fluid and intuitive interface.
Key Achievements:
• Development of a cross-platform mobile application with React Native and TypeScript, integrated with an existing website.
• Creation of interactive and responsive components for online learning: quizzes, progress tracking, videos, and interactive exercises.
• Optimization of front-end performance to ensure fast navigation on mobile and desktop.
• Integration with REST APIs to synchronize user data, manage registrations, and track progress.
• Development of responsive features on the existing website (HTML5, CSS3, JavaScript, jQuery) for a consistent experience across all devices.
• Bug management, correction of technical issues, and continuous improvement of the user interface.
• Implementation of unit and automated tests, as well as CI/CD best practices to secure updates.

Technologies and tools used:
React Native, React, TypeScript, JavaScript (ES6+), HTML5, CSS3, jQuery, REST API, Git/GitHub, CI/CD, Agile/Scrum
Wordpress React Native Développeur TypeScript site internet Responsive design