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Mohamed Amine Hadj SassiMA

Mohamed Amine Hadj Sassi

Senior Full Stack .NET Developer

€350/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Mohamed Amine

🚀 Senior Full Stack .NET Developer – 11 years of experience

Specialist in .NET Core, REST APIs, Microservices, Azure Cloud

Looking for a reliable, responsive, and experienced .NET developer capable of quickly delivering robust solutions?
You've come to the right place.

🔥 My Core Expertise
🟣 Backend (Expert .NET Core & C#)

.NET Core

Secure REST APIs

Microservices

Entity Framework Core, LINQ, SQL Server

Service Bus Integration

🔵 Frontend (Angular & ASP.NET)

Angular

ASP.NET MVC 4/5, Razor

JavaScript, TypeScript, HTML5, CSS3, Bootstrap

API Integration, Optimized UX, Responsive Design

🟢 Cloud & DevOps (Azure Expert)

Azure SQL Database

Azure DevOps (CI/CD, Pipelines)

App Service, Service Bus, Monitoring

🟡 Desktop Applications

WPF

WinForms

DevExpress, Telerik

🎯 My #1 Goal: Deliver High-Performing, Reliable, and Scalable Solutions

With 11 years of experience in critical environments (Insurance, Healthcare, Industry, HR), I guarantee:
âś” Clean and Maintainable Code
âś” Clear Communication
✔ Full Project Ownership (Analysis → Development → Testing → Deployment)

đź§© What I Can Develop for You:

Custom .NET Core + Angular Web Application

Secure and Scalable REST API

Application Migration: .NET Framework → .NET Core

Azure Microservices Architecture

Azure DevOps CI/CD Automation

Professional Desktop Applications (WPF, WinForms)


đź’Ľ Why Clients Choose Me?

11 Years of Experience in Large-Scale Projects

Senior Fullstack Capable of Delivering Quickly and Effectively

Proactive, Results-Oriented, and Team Player

Experienced in Agile / Scrum Environments

International Experience (France, Canada)

📊 Keywords

.NET Core, C#, Angular, Azure, REST API, Microservices, DevOps, Azure SQL, Service Bus, Fullstack .NET, ASP.NET MVC, WPF, WinForms, Entity Framework, CI/CD, Freelance .NET Developer, Senior .NET Developer, .NET Backend Developer, Web Application Development.

  • English

    Conversational

  • French

    Native or bilingual

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

Experience

  • iA Groupe Financier
    Senior .NET/Angular Full Stack Developer
    BANKING AND INSURANCE
    December 2020 - October 2025 (4 years and 10 months)
    Québec City, QC, Canada
    Project 1: Development of a web application for declaration and processing of customer claims in the insurance sector.

    Achievements:
    • Active participation in technical and business requirements analysis in collaboration with the Product Owner and functional analysts.
    • Development of new front-end (AngularJS, ASP.NET MVC 4) and back-end (microservices, .NET Core 6–8) components aligned with business requirements.
    • Setup and management of continuous integration with Azure DevOps (builds, pipelines, deployments).
    • Integration of an Azure Service Bus for reliable asynchronous processing of customer claims.
    • Writing and execution of unit tests with xUnit to ensure feature robustness.
    • Regular code reviews with the team, continuous improvement of code quality and practices.
    • Fixing bugs reported during testing cycles or in production.
    • Mentoring junior developers.
    • Support for business analysts during functional testing and deliverable validation phases.
    Project 2: Design and development of a web application for comprehensive insurance contract management.

    Achievements:
    • Analysis of technical and functional requirements, definition of application architecture, and preparation of development environments.
    • Design and development of a secure REST API (.NET Core) for managing users, assets, and loans.
    • Development of the user interface with ASP.NET Core and integration of front-end services (HTML5, JavaScript).
    • Implementation of automatic email services for notifications (reminders, delays, confirmations).
    • Writing and execution of unit tests with xUnit, validation of critical cases.
    • Setup of continuous integration and deployment via Azure DevOps, management of different environments through the CI/CD pipeline.
    .NET ASP.NET MVC dotnet core C# Microservices
  • Dedalus Healthcare France
    Senior .Net Fullstack Developer
    HEALTH AND WELLNESS
    October 2019 - November 2020 (1 year and 1 month)
    Paris, France
    Project: Evolutionary and corrective maintenance of the Ariane SX solution, a business software for complete clinical activity management.

    Achievements:
    • Participation in prioritizing User Stories and bugs in coordination with the Product Owner.
    • Implementation of complex functional enhancements in a WPF environment and corrective maintenance of the application core.
    • Conducting code reviews, continuous improvement of development practices within the team.
    • Fixing bugs identified during testing cycles and in production.
    • Monitoring continuous integrations and deployments via Azure DevOps.
    • Regular updates to the codebase, refactoring, and associated technical documentation.
    • Close collaboration with the technical architect to ensure evolutions comply with existing architectural standards.

    Technical Environment: C#, WPF, .NET, Entity Framework 6, LINQ, MS SQL Server 2016, Visual Studio 2019, Azure DevOps, Telerik WPF Controls
    C# .NET Entity Framework 6 WPF Azure DevOps
  • Laboratoires Nihel Cosmetiques
    Senior .Net Fullstack Developer
    FASHION AND COSMETICS
    April 2018 - September 2019 (1 year and 5 months)
    Tunis, Tunisia
    Project 1: Development of a web application for managing and tracking driver visits, aimed at optimizing routes, scheduling, and operational control.

    Achievements:
    • Business requirements analysis and definition of layered (n-tier) application architecture.
    • Design and development of Back Office and Web modules in ASP.NET MVC 5 (Front-End & Back-End).
    • Implementation of Windows Services for automatic email notifications.
    • Integration of mapping using Bing Maps for geolocation tracking of visits.
    • Participation in the configuration of technical environments and initial deployment.
    • Writing user guides and training key users.
    • Monitoring continuous integration via TFS and managing application versions.
    • Contribution to improving interface ergonomics in collaboration with the QA and business teams.

    Technical Environment: .NET Framework 4.x, ASP.NET MVC 5, C#, Razor, HTML5, CSS3, JavaScript, jQuery, Ajax, JSON, LINQ, Entity Framework 6, SQL Server 2016, Visual Studio 2017, Windows Services, Bing Map, DevExpress

    Project 2: Development of an application for managing and tracking merchandiser visits.

    Achievements:
    • Analysis, design, and preparation of technical environments.
    • Ensuring continuous integration with TFS.
    • Training users and deploying the application.
    • Preparing the design of n-tier application architectures.
    • Analyzing and developing the Back Office module in WinForm.
    • Analyzing and developing the Web visit management module in ASP.NET (Front-End and Back-End).
    • Implementing Windows Services.
    • Writing user guides.

    Technical Environment: Ajax, Bing Map, CSS 3, DevExpress, HTML 5, JS, JSON, jQuery, LINQ, MS .Net Framework 4.x, MS ASP .NET MVC 5, C#, WF, EF 6, SQL Server 2016, MS VS 2017, MS Windows Services, Razor.

    .NET ASP.NET MVC C# Entity Framework 6 Winforms

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Education

  • Engineering Diploma in Computer Science
    2013
    Diplôme d'ingénieur en informatique

Skill set

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