Freelancer profile translated to English.
Back to original languageAbout Vincent
When a .NET application becomes difficult to maintain and every change creates new bugs, I stabilize the code and eliminate their causes.
.NET Developer with nearly 10 years of experience on business applications and existing systems. Projects using notably C#, ASP.NET Core, Entity Framework, and REST APIs.
I generally intervene in three steps:
- technical diagnosis of the application
- identification of the causes of recurring bugs
- targeted refactoring and automation to improve maintainability
Situations in which I intervene:
- bugs that come back regularly
- application has become difficult to evolve
- technical debt that slows down the team
- frequent production incidents
What I do:
- analysis of existing code and architecture
- identification of root causes of bugs
- refactoring of critical parts
- automation of tools or repetitive technical tasks
Result:
- more stable application
- fewer recurring bugs
- smoother development for the team
Main Technologies:
.NET / C# – ASP.NET Core – Entity Framework – SQL – REST APIs
If you find yourself saying:
“The project works… but we’re afraid to touch the code anymore.”
it’s probably time to discuss it.
🔗 Find me, by my first and last name, on Linkedin
French
Native or bilingual
English
Conversational
Can work on-site
Angers (up to 50km), Nantes (up to 10km), Paris (up to 20km), Bordeaux (up to 10km)
Experience
- PrivéFull Stack Developer, ASP.NET Core EF Core, jQueryAGRICULTUREFebruary 2023 - August 2025 (2 years and 6 months)Angers, FranceSummary: Creation of an internal web client software using ASP.NET CORE from a legacy Windev client software.Context
- Company > 500 people
- Agricultural sector
- Technical environment: Microsoft with Oracle database
Main mission- Creation of an internal web client software using ASP.NET CORE from a legacy Windev client software.
- Implementation of unit, integration, and functional tests to maintain stability and prevent regressions.
Problems to solve- Slow initial connection
- Intermittent disconnections
- Business requests requiring modification of the core of the database
Skills used- .NET 7 then 8
- ASP.NET CORE
- Entity Framework Core
- Oracle Database
- jQuery
- ClosedXML NuGet (Excel file generation)
- Telerik NuGet (Word and PDF document generation)
- SignalR NuGet (real-time communication)
- Microsoft OpenAPI NuGet
- OpenIddict NuGet (authentication)
- NLog NuGet (logging)
- Quartz NuGet (task scheduling)
- System.Linq.Dynamic.Core NuGet (dynamic LINQ queries)
- Datatable NuGet
- select2 NuGet
- xUnit NuGet (tests)
- Selenium NuGet (tests)
Collaboration- Worked alone for a year, then in a team of 2, then 4.
- Implicit role of lead dev in the team
- Interaction with the project manager, sometimes with the business stakeholders
Work process- Meetings to show progress
- Estimation and ranking of tasks to be performed on an Azure Kanban board
- 1-week sprints
- Creation of tests (unit/integration/functional)
- PR review within the team (via a document unifying best practices)
- V1 in 6 months
- Weekly iteration
- Monthly deployment
Achievements- Creation of an APS.NET CORE intranet for qualifying and quantifying field trials by agronomic engineers.
- EdiEyes Vision CareResearch/Development EngineerSOFTWARE PUBLISHINGDecember 2020 - November 2022 (1 year and 11 months)Angers, FranceSummary: Development from scratch of solutions (API and website) aimed at professionals in the visual health world (Ophthalmologists, Orthoptists, Opticians) and their clients.Context
- Company < 10 people
- Activity sector: visual health / eyewear
- Technical environment: Microsoft and Angular
Main mission- Development from scratch of solutions (API and website) aimed at professionals in the visual health world (Ophthalmologists, Orthoptists, Opticians) and their clients.
Problems to solve- Creation of an application architecture enabling the proper functioning of services, their debugging, their supervision, etc.
- Work in an environment highly sensitive to GDPR (patient visual health data)
Skills used- API via ASP.NET CORE
- Entity Framework Core
- Front-end in Angular v14
- Html5/Css3
- Javascript/jQuery
- Document writing (functional specifications, technical specifications)
- Development of unit and integration tests (NUnit)
- Technical watch
Collaboration- Team of 3 R&D engineers, then 2
- Role of second to the lead dev
Work process- V1 in 6 months
- 2-week iterations
- Monthly deployment
Achievements- Creation of microservices, API, and front-end enabling information exchange between the "three O's" (Ophthalmologists, Orthoptists, Opticians), from prescription creation to the production of visual aids (glasses/lenses).
- TGS FranceIT Analyst DeveloperSOFTWARE PUBLISHINGOctober 2017 - December 2020 (3 years and 2 months)49070 Beaucouzé, France📝 Summary- Development of an internal accounting solution, based on an existing database. Analysis, documentation, development.👫 Context- Team of 2 IT analyst developers + 1 manager✅ Tasks- Development of an internal accounting solution, based on an existing database (ASP.NET MVC 5)- Analysis of official documents (related to taxes)- Document writing- Occasional support on historical accounting software (Windev)💻 Software used- Visual Studio 2017 and 2020- SSMS
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Education
- IT Design Developer (Master's degree), Computer ScienceENI School of IT2014Concepteur Développeur Informatique (bac+4), Informatique
- Software Developer (Associate's degree)AFPA2012Développeur Logiciel (bac+2)