.NET/C# Software Engineer

Craftzing; Antwerpen; Hybride; EUR 92 250 - 184 500; Plein temps

Résumé du poste

Craftzing is seeking a senior (.NET/C#) software engineer to build and launch digital platforms. You will lead architecture, collaborate with clients and teams in a hybrid work environment, and take ownership of robust, scalable solutions.

You should bring 10+ years in a similar role, deep C#/.NET expertise, API design experience, and Azure familiarity. Strong communication and a proactive mindset are essential for success in this role.

Qualifications

• Minimum 10 years of proven experience in a senior .NET/C# role.
• Expert in C# and the .NET ecosystem with hands-on CQRS knowledge.
• Strong experience with REST/GraphQL APIs and API middleware.
• Experience with Entity Framework, LINQ, and SQL-based databases.
• Cloud experience on Microsoft Azure and related services.
• Proficient with version control (Git) and agile methodologies.
• English fluency; Dutch a plus; Belgium-based location.

Responsabilités

• Architect and build scalable, high-performance .NET applications.
• Design modular software solutions and robust architectures.
• Own application robustness, scalability, security and performance.
• Make sound architectural decisions and plan for growth.
• Collaborate with cross-functional teams and clients in a hybrid setup.
• Provide technical leadership and mentor the team.
• Work in an Agile/Scrum environment with timely deliveries.

Connaissances

English fluency

C# / .NET expertise

Team collaboration

Problem solving

Outils

CQRS

Entity Framework

LINQ

SQL Server

PostgreSQL

Microsoft Azure

App Service

Functions

Service Bus

Git

REST/GraphQL APIs

AI tooling

TypeScript

React

Description du poste

Craftzing is looking for a (freelance) senior .NET/C# software engineer to build and launch digital platforms.

About the job

Craftzing is looking for a senior (.NET/C#) software engineer to build and launch digital platforms. Someone who likes a complex challenge, talk to business about technical matters, can lead a development team and build custom solutions from scratch.

What you'll do:

• Architect and build scalable, high-performance .NET applications that stand up to real-world load.
• Design and implement clean, modular and efficient software solutions.
• Take ownership of the robustness and architecture of the application, designing for scalability, security and performance from the start.
• Make and defend sound architecture decisions, and anticipate how systems need to scale.
• Collaborate with cross-functional teams and clients in a hybrid work environment.
• Provide technical leadership and mentorship, and set the technical direction for the team.
• Work in an Agile/Scrum environment, ensuring timely and high-quality deliveries.

Who we're looking for:

• Minimum 10 years of proven experience in a similar role
• Expert in C# and the .NET ecosystem
• Hands‑on experience with CQRS for separating command and query responsibilities
• Expert in system integration: You seamlessly connect application components, APIs, and services to create a cohesive, high-performing solution
• Experience building REST/GraphQL APIs and writing API middleware
• Experience with Entity Framework, LINQ, and relational databases (SQL Server, PostgreSQL)
• Experience with cloud platforms, ideally Microsoft Azure (App Service, Functions, Service Bus)
• Experience with version control software
• Experience in incorporating AI‑tooling into your workflows
• Familiarity with scrum and working in an agile environment
• You are a team player with good communication skills
• You are detail‑oriented with a focus on code quality and best practices
• You have a proactive problem‑solving mindset
• You have a passion for continuous learning and innovation
• Fluent in English; Dutch is a plus
• You are located in Belgium.

Bonus points:

• Experience using TypeScript in back-end environments (Node.js with NestJS, Express or Fastify)
• Experience with React
• Experience developing products and platforms for the maritime sector
• You can demonstrate your skills using a couple of real world projects

You're Craftzing-material when

• You have a genuine interest in your customer, their needs and challenges
• You have a real passion for quality and technology and its potential to improve work and life
• You have a true consulting mindset

Don't worry if you can't tick all the boxes above. It's about the right mentality and the desire to learn. If you think we're the right fit for you, get in touch.

Why you'll love us

You'll be part of a team of experts who share a passion for business transformation. Strategizing, designing and building spot‑on sustainable digital environments that made us a trusted long‑time partner of Telenet, Flemish Government, itsme®, BNP, Proximus, Philips TP Vision, Ahold Delhaize, Mediafin, Melexis, and many others. Together with us, you love to make a meaningful difference for our clients.

From day one you get the trust and space to do what you're good at, and we encourage you to step out of your comfort zone and take ownership.