Freelancer profile translated to English.
Back to original languageAbout Khalfallah
Senior software engineer specializing in C#/.NET development, with over 9 years of experience in designing, developing, and modernizing backend, full-stack, and cloud applications. I have worked in various sectors such as BIM/CAD, finance, insurance, real estate, and services, which has allowed me to adapt to diverse technical and business contexts.
My background has led me to work on WPF desktop applications, REST and SOAP APIs, WCF services, Xamarin mobile applications, as well as projects migrating legacy solutions to more modern architectures in .NET Core, .NET 6, and .NET 8. I also have solid experience in integrating cloud services, particularly AWS with Lambda, S3, EC2, Elastic Beanstalk, and DynamoDB, as well as Azure with Azure DevOps, App Services, Azure SQL, and Key Vault.
Beyond development, I am accustomed to working on performance optimization, refactoring existing code, improving software quality, implementing tests, automation, CI/CD, and collaborating in an agile environment. Autonomous, rigorous, and solution-oriented, I am capable of interacting with both technical teams and business stakeholders to understand needs, propose reliable solutions, and deliver maintainable, robust functionalities tailored to project challenges.
French
Native or bilingual
English
Fluent
Arabic
Native or bilingual
Can work on-site
Paris (up to 50km)
Experience
- Orkestra OnlineSenior Software EngineerARCHITECTURE AND URBAN PLANNINGAugust 2021 - October 2025 (4 years and 2 months)Paris, FranceAt Orkestra Online, I participated in the development and maintenance of the Orkestra desktop application in WPF, the design and deployment of REST APIs in .NET Core / .NET 8, as well as integration with Autodesk Revit and Civil 3D. I also contributed to the migration of .NET Framework solutions to .NET 8, AWS service management, and CI/CD processes with Azure DevOps.
- SOATC# / SQL Developer -- Groupe SeLogerREAL ESTATESeptember 2020 - August 2021 (11 months)Paris, FranceAt Groupe SeLoger, I worked as a full-stack developer on web services in C# / .NET Framework. I participated in the development and maintenance of internal applications, the creation of SSRS reports, script automation, and data migration to Salesforce, in a SQL Server and SCRUM agile environment.
- SOAT.Net/Xamarin Developer -- WishizzBANKING AND INSURANCEFebruary 2019 - September 2020 (1 year and 7 months)Paris, FranceAt Ageas France, I worked on the Wishizz project as a full-stack developer. I participated in the development of cross-platform mobile applications with Xamarin Forms, the design of REST WebAPIs in C#/.NET Framework, and the implementation of unit and integration tests in an agile context.
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Education
- Engineer's degree, Information TechnologyESPRIT2014Engineer's degree, Information Technology
- Licence, Systems and Networks administrationHIGHER INSTITUTE OF COMPUTER SCIENCE (ISI)2011Licence, Systems and Networks administration