Full-Stack Web and Mobile Developer
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What you will do
You will join the IT development team at a Belgian public-sector organisation, working on web and mobile software solutions that support their operations.
Your main responsibilities include:
- Maintain the technical architecture of software solutions
- Collaborate with the technical team to translate business requirements into robust technical designs and appropriate technology choices
- Actively contribute to software development, particularly for complex or critical components
- Ensure code quality and architectural consistency through code reviews, technical standards, and best practices
- Participate as a member of project teams, contributing directly to the design, development, testing, and delivery of software solutions
- Develop and maintain mobile applications
- Contribute to the testing, release, and deployment of mobile applications on the Google Play Store and Apple App Store
What we are looking for
You have at least 6 years of experience as a full-stack developer and bring the following technical skills:
- Object-oriented programming, design patterns, n-tiers architecture
- Backend: C#, .NET Framework 4.0/4.5/4.8, .NET Core, .NET Core WebApi, Entity Framework
- Front end: HTML, CSS, JavaScript, jQuery, SCSS/SASS, Nuxt.js, Node.js, VueJs
- Database: MS SQL Server, TSQL
- DevOps and containerisation: MS Azure DevOps, Git, Docker, Kubernetes
- Mobile development: React Native, Expo, deployment (Google Play, App Store)
- Unit testing: NUnit, xUnit
- IdentityServer, OpenId Connect and web applications security
- Rest API services
You also bring strong soft skills:
- Ability to analyse complex problems, understand technical requirements, and identify appropriate solutions
- Ability to work independently, take ownership of assigned tasks, and proactively identify areas for improvement
- Strong teamwork skills and ability to work effectively with developers, designers, functional analysts, project managers and other project stakeholders
- Ability to communicate clearly and explain technical topics to colleagues
- Ability to adapt to changing requirements, new technologies, and different development environments
- Strong focus on code quality, reliability, usability, and maintainability across web and mobile applications
The setting
This assignment runs from mid-November 2026 to the end of February 2027, a period of 4 months.
The work is hybrid, based in Brussels.
You speak and write French or Dutch, and English.
You can join us for this assignment as a freelancer or as an employee of HumanInTech. Same role, same team. If you join as an employee, your employment continues beyond this assignment. When it ends, we’ll work together to find your next assignment.
Location: Brussels, hybrid
Work address: Belgium
Employer / contracting party: HumanInTech
Applications close (Brussels time): November 13, 2026 at 1:00 AM
Engagement: Freelance or employed by HumanInTech
Working hours: Full-time
Experience: 6-10 years or more
Education: Bachelor's or more
Published: November 2026
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