.NET/C# Software Engineer

Craftzing Group; Antwerpen; Hybrid; EUR 111,000 - 166,000; Full time

Job summary

Craftzing Group seeks a senior .NET/C# software engineer to build and launch digital platforms in a hybrid Belgium-based setting. The role calls for architectural leadership, robust design, and close collaboration with business teams while delivering high-quality software.

You will lead development, ensure scalable and secure solutions, and mentor others in an Agile environment. Fluency in English is required; Dutch is a plus.

Qualifications

• 10+ years of proven senior .NET/C# development experience.
• Expert in C# and the .NET ecosystem with Blazor.
• Strong API design experience (REST/GraphQL).
• Experience with CQRS and system integration.
• Hands-on with EF, LINQ, and relational databases (Postgres/Azure SQL).
• Familiar with Microsoft Azure services and cloud apps.
• Proficient with version control and CI/CD basics.
• Experience incorporating AI tooling into workflows.
• Excellent communication and teamwork in a hybrid environment.
• English fluency; Dutch a plus; Belgium-based.

Responsibilities

• 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.

Skills

C#

.NET

Blazor

CQRS

API design

EF & LINQ

PostgreSQL/Azure SQL

Azure cloud

Git

AI tooling

Agile/Scrum

Teamwork

Code quality

Problem solving

Learning mindset

English

Tools

Azure

PostgreSQL

Azure SQL

Git

Job description

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
• Experience with Blazor
• 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 (Postgres/Azure SQL server)
• 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 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.