10+
years of software development
Fullstack .NET freelancer · Nice · Remote, hybrid, on-site
Valentin Passe
I design reliable web products that stay readable and easy to evolve.
Self-taught engineer with 10+ years of .NET delivery, I work across scoping, application architecture, fullstack development, and useful AI integration to help teams move faster without creating unnecessary debt.
- 10+ years of web and application development experience, alternating employee and freelance positions.
- Hands-on expertise in .NET (Core, MVC, Blazor, MAUI), Clean / DDD / CQRS architecture, and Azure cloud.
- Active watch on AI tooling and concrete integration into day-to-day development practice.
Fullstack
Back-end, APIs, Blazor web and MAUI mobile on the .NET stack
.NET
core stack, from legacy to .NET 10
About
As a freelance Fullstack .NET engineer, I help companies turn business needs into robust, readable and long-lasting web products.
I work across the whole value chain: scoping, architecture, implementation, quality, and production delivery. The objective is simple — ship quickly, cleanly, and without sacrificing maintainability.
Self-taught by training and temperament, I combine autonomy, rigor, and collaborative work. My passion for new technologies — especially AI — pushes me to continuously integrate the tools that bring real value to the teams I work with.
DesignShipStabilizeEvolve
Why work with me
End-to-end execution
From early scoping to production release, I keep a result-oriented mindset and a clear product overview.
Strong fullstack .NET focus
Back-end, APIs, Blazor front-end, MAUI mobile, and application architecture to avoid dead zones between layers.
Pragmatic AI integration
I use AI when it genuinely simplifies a workflow, not as a decorative layer that adds complexity.
Services
Three intervention modes to structure a roadmap, strengthen an existing product, or unlock practical AI-driven gains.
Scoping and technical direction
Problème adressé
The business need is clear, but the solution still lacks the technical structure required to start with confidence.
Bénéfice métier
You get clear architecture decisions, a deliverable rollout plan, and a realistic delivery path.
- Scoping workshops
- .NET / Clean architecture
- Prioritized roadmap
Fullstack .NET delivery
Problème adressé
Your product must evolve quickly without hurting code clarity, performance, or long-term maintainability.
Bénéfice métier
You speed up production delivery with an implementation that is robust, readable, and aligned with real usage.
- .NET APIs and back-end
- Blazor / MAUI interfaces
- Quality and performance
Useful automation and AI
Problème adressé
Teams lose time on repetitive operations and need practical gains without launching an oversized transformation program.
Bénéfice métier
You identify high-value automations with restrained AI integration adapted to the business context.
- Workflow audit
- Targeted automation
- Adoption support
Skills
Fullstack .NET expertise supported by front-end, cloud, data, and delivery capabilities for concrete projects.
Fullstack .NET
The core stack used to design, ship, and evolve reliable applications.
- C#
- .NET
- ASP.NET Core
- Blazor
- MAUI
- Entity Framework
- Azure
- Automated testing
Front-end & Architecture
Web interfaces, technical structure, and architecture choices driven by actual usage.
- Web fundamentals
- JavaScript
- Architectures
- Project delivery / Team collaboration
Data & Cloud
Persistence, cloud services, and tooling to support production-ready solutions.
- SQL Server
- PostgreSQL
- MongoDB
- Redis
- Firebase
Delivery & Tooling
Production environment, team collaboration, and delivery execution tooling.
- Visual Studio
- Azure DevOps / GitHub
- Docker
- RabbitMQ
- Qlik Sense
- SSMS / Report Builder
Environments & Human qualities
Ability to contribute across varied environments with autonomy and strong collaboration.
- Self-taught
- Windows
- Autonomous
- Mac OS
- Linux
- Team spirit
- Methodical
- Driven
Experience
Over 10 years of delivery, from initial internship to current freelance engagements — alternating employee and freelance positions in demanding operational environments.
Nov. 2023 — Present
Full-Stack .NET Developer
SMEG · Monaco · Freelance
Context
On-call, emergency and intervention management platform (desktop and mobile). Architecture mission: analysis and rebuild of the existing foundation, definition of a modular target architecture and a reusable project template. Mobile POC in MAUI to validate the foundation and formalize the field constraints. Design of the Nexio customer portal (individuals and businesses).
Value delivered
Modular technical foundation delivered, mobile POC validated, customer portal in production. Higher field responsiveness in critical situations.
- .NET 8/9/10
- C#
- Clean Architecture
- DDD
- MAUI
- AWS
- Docker
- Azure DevOps
- PostgreSQL
Jun. 2023 — Oct. 2023
Back-end .NET Developer
TidyUp Technologies · Valbonne · Freelance
Context
Design and development of an innovative content organization, classification, and search solution with an AI component (back-end).
Value delivered
Durable back-end foundation structured to support product evolution and processing reliability at scale.
- .NET 7
- C#
- ABP Framework
- DDD
- Azure
- Docker
- RabbitMQ
- Redis
- MongoDB
- PostgreSQL
Apr. 2021 — Jun. 2023
Back-end .NET Developer
Ubaldi · Carros · Full-time
Context
Design and development of multiple internal back-end projects. Active contributor to the migration of several applications to Azure Cloud, and to the introduction of a DDD approach to support company growth.
Value delivered
Strengthened back-end delivery, raised the architecture maturity (DDD), and guaranteed quality through code reviews in an Agile team.
- .NET 6 and earlier
- C#
- Blazor
- Entity Framework
- Azure Cloud
- Vue.js
- Bootstrap
- Azure DevOps
- SQL Server
Sep. 2015 — Apr. 2021
Fullstack .NET Developer
Régie Eau d'Azur · Nice · Full-time
Context
Development of multiple internal .NET applications, handled end-to-end: requirements, technical documentation, estimation, database and application development, technical and business testing, demos. Development of a lightweight JavaScript library to improve application ergonomics.
Value delivered
Progressive industrialization of the application portfolio, higher service quality for end users, and capitalization via a reusable internal JS library.
- .NET MVC 4.7
- .NET Core 3.1/5
- C#
- Blazor
- Xamarin Forms
- Entity Framework
- SCSS
- jQuery
- SSIS
- SQL Server
- TFS
Sep. 2014 — Sep. 2015
Fullstack .NET Developer
Beyond IT (B-Network) · Cannes · Apprenticeship
Context
Design of several .NET WebForm web applications: requirements analysis, scope definition, development, testing, deployment, and demo.
Value delivered
First long-form professional experience — full ownership of the lifecycle of small WebForm applications in a real-world environment.
- ASP.NET WebForm
- C#
- Entity Framework
- HTML/CSS
- JavaScript
- jQuery
- Ajax
- Bootstrap
Jan. 2014 — Mar. 2014
Back-end PHP Developer
Pascal Coste (headquarters) · Nice · Internship
Context
Design of a statistics file-sharing back-end. Drafting of functional requirements for an ERP solution. Participation in several audits.
Value delivered
First hands-on exposure to a full web project lifecycle and to functional analysis on the editor side.
- PHP
- HTML/CSS
- JavaScript
- jQuery
- Ajax
- Bootstrap
- MVC
Education
An academic foundation built via apprenticeship, complemented by continuous learning and skill growth shaped by real delivery work.
2014 — 2015
Professional Bachelor's Degree — SIL / IDSE (Apprenticeship)
IUT Nice Sophia Antipolis
Software and Computing Systems, specializing in Distributed Computing and Enterprise Information Systems. Year completed in apprenticeship at Beyond IT.
2012 — 2014
BTS SIO — SLAM
Lycée Honoré d'Estienne d'Orves, Nice
IT Services for Organizations, Software Solutions and Business Applications track — a structured foundation in development, databases, and project culture.
2008 — 2011
French High School Diploma (Baccalauréat)
Lycée Jules Ferry, Cannes
Secondary school degree, starting point of a continuous self-taught journey in software development.
Projects
A selection of concrete delivery contexts showing how I turn business or technical constraints into usable outcomes.
Real-time on-call — desktop and mobile
Business solution to manage on-call operations, emergencies, and interventions across desktop and MAUI mobile workflows.
Context
Demanding operational environment at SMEG Monaco with high expectations around availability, continuity of service, and mobile constraints (network, updates, data sync).
Contribution
Modular target architecture, reusable project template, MAUI mobile POC to validate the foundation, and formalization of the field constraints.
Outcome
Digitized on-call processes and improved responsiveness in critical situations.
Nexio — customer portal for individuals and businesses
Web portal for SMEG customer request management and follow-up, serving both individual and business profiles.
Context
Redesign of a multi-target customer journey requiring a consistent experience across individuals and businesses.
Contribution
Fullstack design and development of the portal, functional analysis, technical documentation, and coordination of incremental releases.
Outcome
Unified customer portal in production, empowering customers to self-track their requests.
AI platform — digital content management
Back-end foundation of an innovative solution for organizing, classifying, and searching digital content with an AI component.
Context
Need for a strong back-end foundation to support long-term product evolution and AI processing on growing data volumes.
Contribution
Back-end development on .NET 7 with the ABP framework, structuring technical flows (RabbitMQ, Redis, MongoDB) and persistence.
Outcome
Durable technical base supporting product scale-up and AI processing reliability.
Contact
Tell me what you want to ship. I will get back to you quickly with a concrete view of the need, the constraints, and the most relevant delivery path.
Fast reply, direct conversation, no unnecessary funnel.
- New or redesigned .NET web application
- Fullstack reinforcement on an existing product
- Technical review, scoping, or delivery acceleration
Direct email: passe.valentin@gmail.com