Hire the Best .NET Framework C# Engineers
in France

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
4.5/5
of Upwork by G2 peer reviewers
Konstantin S.

Pau, France

$45/hr
4.8
43 jobs

Hello! 👋 I’m a CTO, Senior .NET Core Developer, and AI Engineer with 20+ years of experience in C#, Microsoft Azure, cloud architecture, enterprise software, and Artificial Intelligence solutions. I help companies build scalable SaaS platforms, enterprise systems, internal tools, AI assistants, AI copilots, and production-ready AI products. As an AI Developer, I combine backend engineering with AI Development, Automation, API integration, and .NET Core architecture to create reliable Operational systems that solve real business problems. 📘 About Me I’m a technical leader with deep experience in software architecture, C# development, and .NET Core systems. Over the years, I’ve designed cloud-native platforms, distributed applications, Web API services, microservices, and enterprise backend systems for complex environments. My current focus is on Artificial Intelligence, AI Development, AI Agent Development, and practical Automation for business workflows. As an AI Developer, I build systems that connect LLMs, RAG, Azure AI Services, APIs, and business logic into stable products. The goal is not just to add AI features, but to create Operational value: fewer manual tasks, better decisions, faster delivery, and cleaner internal processes. As an AI Developer, I work across the full product lifecycle: discovery, architecture, backend logic, API integration, cloud setup, testing, deployment, and long-term support. I use .NET Core, Microsoft Azure, Orleans, RESTful architecture, and CI/CD to make sure every solution is secure, maintainable, and ready for real users. A strong part of my work is AI Development for SaaS products and enterprise platforms. I design Artificial Intelligence features, AI agents, AI assistants, copilots, workflow Automation, and API-connected systems that support real Operational needs. My background in .NET Core and distributed architecture helps me build high-concurrency applications that stay stable as usage grows. I also help teams modernize existing systems. As an AI Developer, I can review architecture, improve backend performance, connect AI services, build custom Automation, and turn fragmented workflows into one clear Operational process. 🛠️ Technical Skills C# & .NET Core Microsoft Azure & Cloud Architecture Orleans Distributed Virtual Actor Framework RESTful Architecture & Web API SaaS Development & Microservices Software Architecture & Design Patterns Artificial Intelligence solution design Artificial Intelligence architecture AI Development lifecycle .NET Core architecture AI Development for enterprise systems AI Developer implementation AI Agent Development & AI assistants Retrieval Augmented Generation LLM Prompt Design Azure AI Services API Design and Integration Automation workflows Operational system architecture MAUI & Blazor Angular DevOps, Kubernetes & CI/CD Aspire 🌿 Strategic Skills Enterprise Software Architecture Planning Artificial Intelligence strategy AI Development roadmap AI Developer technical leadership Automation planning Operational workflow optimization Cloud Migration & Optimization Performance Optimization Security & GDPR Compliance Cost Optimization Agile & Scrum Team Leadership Stakeholder Communication Technical Discovery & Roadmapping TOGAF Methodology Problem Solving 🏆 Certifications Microsoft Certified: Azure AI Associate Microsoft Certified: Azure Developer Associate Microsoft Certified: Azure DevOps Expert Microsoft Certified: Azure AI Fundamentals Xamarin Certified Mobile Developer 🤝 Let’s Connect I can help you design, build, and scale intelligent software solutions using C#, .NET Core, Microsoft Azure, Artificial Intelligence (AI), AI Development, AI Agent Development, Automation, API Integration, and Chatbot Development. Whether you need an AI Developer, a senior specialist, or a technical partner for a SaaS product, AI agent, API platform, or Operational cloud system, I can help turn the idea into a reliable solution that creates measurable business value.

  • .NET Framework
  • C#
  • Microsoft Azure
  • Python
  • ASP.NET Web API
  • Software Architecture
  • Artificial Intelligence
  • AI Development
  • AI Agent Development
  • API Integration
  • Web API
  • Machine Learning
  • n8n
  • Natural Language Processing
  • Chatbot Development
  • LLM Prompt Engineering
  • Retrieval Augmented Generation
  • AI Bot
  • AI App Development
  • AI Consulting
Naveed R.

Aulnay-sous-Bois, France

$30/hr
5.0
5 jobs

Looking to elevate your web applications or ERP systems? As a Full-Stack .NET Developer, I specialize in building scalable, high-performance solutions that drive results. With 7+ years of experience, I bring your vision to life through robust, maintainable code, intuitive user interfaces, and seamless integrations, all while optimizing for speed and efficiency. Here’s what I offer: Custom .NET Development – Tailored solutions using ASP.NET MVC, C#, and Entity Framework ERP System Expertise – Custom modules, reporting, and workflow automation to streamline business operations Performance Optimization – Fast, efficient code with caching, server tuning, and database optimization Cross-Platform Mobile Apps – React Native for building mobile solutions alongside web applications Let’s work together to create solutions that drive your business forward!

  • .NET Framework
  • C#
  • ASP.NET MVC
  • Entity Framework
  • LINQ
  • Object-Oriented Programming
  • Microsoft SQL Server
  • Web Application
  • Entity Relationship Diagram
  • Performance Optimization
  • Agile Software Development
  • Version Control
  • Desktop Application
  • API Integration
  • ASP.NET Web API
Muhammad Haseeb T.

Paris, France

$30/hr
5.0
22 jobs

Thank you for considering my profile. I’m a passionate and pragmatic software engineer with 7 years of professional experience, specializing in full-stack development and App development using Microsoft technologies on the backend and JavaScript framework on front-ent. Strong in object-oriented analysis and design and experience with a wide range of front-end and back-end frameworks (see below). Also, being an artist in nature, I have a good sense of design, colors, and usability and can build beautiful and modern interfaces that people love. I can assist in all stages of the software development lifecycle and deliver working software with clean architecture, clean code, and automated tests. I have been working remotely on Upwork for more than 2 year, and within less than a year, I am top rated with 100 percent Job Success Score. ✔ If you never try, you'll never know ✔ I love to convert user requirements into working functionality. ✔ Let's get started. I have experience in different areas of programming and tools. ✔ Server-side apps (Asp.net core, NodeJS) ✔ SPA (Angular, React/Redux) ✔ App development (Xamarin Forms, React-Native) ✔ Unit testing and Integration testing ✔ Cross-platform Xamarin (C#, .NET) apps, ✔ Cross-platform React-Native apps, ✔ Architecture ✔ HTML/CSS ✔ Bootstrap ✔ Support and Maintenance Best regards

  • ASP.NET Web API
  • Entity Framework
  • SQL
  • React
  • NestJS
  • .NET Core
  • Mobile App Development
  • Angular
  • TypeScript
  • Redux
  • Bootstrap
  • ASP.NET Core
  • JavaScript
  • React Native
  • Xamarin
  • Microsoft SQL Server
Mehdi S.

Lyon, France

$17/hr
4.9
7 jobs

IT Architect & Director. With over 12 years of experience as an IT Director and Architect, I have successfully navigated the fast-paced, ever-evolving world of technology. I have had the privilege of leading IT initiatives across various industries, including e-commerce, e-ticketing, road management, and healthcare. My expertise spans a wide range of domains, with a strong focus on Microsoft technologies, cloud computing, DevOps, and artificial intelligence. I am particularly passionate about microservices architecture, leveraging it to design scalable, efficient, and agile IT solutions that drive business growth. I thrive in dynamic environments, whether it's leading software development projects, designing innovative architectures, or managing teams to deliver high-quality results. Here’s what I bring to the table: - Cloud & DevOps Expertise: Skilled in cloud architecture and DevOps practices to optimize IT operations. - Microsoft Technologies: Deep proficiency in the Microsoft ecosystem, helping businesses leverage these tools effectively. - Leadership & Strategy: Proven track record of leading teams, fostering innovation, and aligning technology solutions with business objectives. - AI & Emerging Technologies: Passionate about integrating AI to solve complex problems and improve operational efficiency. In addition to my technical and leadership experience, I am deeply engaged in scientific research, always eager to explore cutting-edge technology and push the boundaries of what's possible. My goal is to help businesses harness the transformative power of IT, driving meaningful, positive change. I would be glad to work together to bring your IT vision to life!

  • .NET Framework
  • C#
  • Windows Communication Foundation
  • Web Service
  • RESTful Architecture
  • Visual Basic
  • API Development
  • OAuth
  • Web Services Development
  • SOAP
Melvin C.

Equeurdreville-Hainneville, France

$25/hr
5.0
3 jobs

I am an engineer specializing in software development and embedded systems, bringing expertise in C#, C++, and Python to your projects. With experience at the French Department of Defence (DGA), where I developed simulation tools in .NET, C#, python and managed databases, as well as at ASML, integrating new technologies in C++ and Python, I have a strong background in both desktop applications and embedded systems. ✅ Development of tools in C#, WPF, .NET ✅ Programming in C, C++, and Python ✅ SQL / NoSQL database management ✅ Automation and testing (GoogleTest, Jenkins) Passionate and detail-oriented, I’m ready to take on your technical challenges. Let’s discuss your project !

  • .NET Framework
  • C#
  • Desktop Application
  • Python
  • C++
Ashwin N.

Clermont-Ferrand, France

$30/hr
5.0
4 jobs

👋 My goal is to turn your business/professional ideas into profitable and realistic models with the help of state of art machine learning models. 📌 What Can You Expect From Me: - I have 4+ years of experience working as an active Machine Learning researcher/Data Scientist and collaborating with leading-edge companies and distinguished machine learning professors across the globe. My asset is automation using the power of AI. I use computer vision to automate quality control, improve production efficiency, detect defects in products, recommend products to customers, track inventory levels and a lot more. - I have the ability to identify and solve problems which is highly valuable. I am able to think critically and find solutions to challenges that may arise any time during the project. - I have strong work ethic. I aim to work 8-10 hours daily on different projects which I handle. I am adept at managing my time well and I prioritise tasks effectively 📌 How My Experiences Can Align with Your Ideas: - Across all my work my main goal to bring in the most value for my work. 👉That can be providing most profit to a company I am working for, or providing the most value to any academic work I contribute for. - I always encourage the clients to have a small meeting with me discussing their expectations from the project, I usually tend to provide solutions while on call, as I posses a natural problem solving tendency. - I am available across almost all time zones and posses a versatile and friendly that would fit into your company's culture. I am always aiming to better myself by researching throughly about my clients and what makes them the most profit. 📌 What Are Some Challenges Faced by the Industry and How I Wish to Solve Them: - Data Shortage: Being an active researchers I am always aware about the latest models which are trained to perform even with low amounts of data. We can always use traditional methods like transfer learning and fine-tuning a large model to solve this problem. Apart from this, I also manually data if required to do so. This is one of big problems in the machine learning domain domain itself with active research going on. - Lack of Talent: Many of the talents working in the domain of AI just know how to copy-paste pre-trained models of code following a video from youtube. What the industry truly lacks is innovation and this is where I believe we researchers come into play the most. I am always aligned with the latest research in machine learning through staying in touch with all the major conferences and I am constantly thinking about ways to implement them. 👉 I have 4+ years of experience working as an active Machine Learning researcher/Data Scientist and collaborating with leading-edge companies and distinguished machine learning professors across the globe. My expertise predominantly lies in Computer Vision(NLP) and I possess a robust foundation in NLP as well. I devoted my efforts to develop AI tools which are is by millions of users and have also submitted research papers to distinguished journals and publications like AAAI, Information Fusion, WACV and IEEE ✅Successfully Completed projects: - Object Detection and Tracking of Objects of Interest Across Video Frames - Image Classification on Large Datasets, - Anomaly Detection in Videos - Novel Protein Structure Discovery - General Class Discovery using Graph Convolutional Neural Networks - Flood Prediction using River Data - Automated Driver in Simulated Environment ✅Framework/Libraries I have Experience With: - Deep Learning: Pytorch, Tensorflow, - Machine Learning: scikit-learn, OpenCV, PIL, scikit-image, numpy, matplotlib, - Programming Languages: Python, C, C++, Java - Tools: Git, Linux, AWS, LaTex ✅Deep Learning Models: - CNN: ResNet, MobileNet, VGG, U-Net, RCNN, Mask RCNN - Vision Transformer: ViT, Swin Transformer - Generative AI: GANs, Diffusion models, VAEs - Language Vision Models: CLIP (by Open AI) - LLM's: GPT, BART, RoBERTa, DistilBERT - AI Tools: ChatGPT, Bard, Stable Diffusion, DALLE-2 ⭐️ I consistently Receive Praise From My Clients For: - Expertise in dealing with novel machine learning problems - My professionalism, structured approach, and effective project execution. - My exceptional communication, proactive attitude, and collaborative work culture. - My expertise in academic concepts, particularly in research related to Computer Vision.

  • Machine Learning Model
  • Natural Language Processing
  • Reinforcement Learning
  • Python
  • Machine Learning
  • Computer Vision
  • Generative AI
  • Data Analysis
  • Artificial Intelligence
  • Academic Research
  • Science Tutoring
  • Docker
  • Mathematics
  • Scientific Illustration
  • Research Methods

How it works

Post a job for free Post a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

How do I hire a .NET Framework C# Engineer in France on Upwork?

You can hire a .NET Framework C# Engineer in France on Upwork in four simple steps:

  • Create a job post tailored to your .NET Framework C# Engineer project scope. We'll walk you through the process step by step.
  • Browse top .NET Framework C# Engineer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top .NET Framework C# Engineer profiles and interview.
  • Hire the right .NET Framework C# Engineer for your project from Upwork, the world's largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a .NET Framework C# Engineer?

Rates charged by .NET Framework C# Engineers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a .NET Framework C# Engineer in France on Upwork?

As the world's work marketplace, we connect highly-skilled freelance .NET Framework C# Engineers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream .NET Framework C# Engineer team you need to succeed.

Can I hire a .NET Framework C# Engineer in France within 24 hours on Upwork?

Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive .NET Framework C# Engineer proposals within 24 hours of posting a job description.