RELYzITFull Stack Developer (Freelance) – 8 Months – Aalst, Belgium
Where Builders Build the Future
At RELYzIT Talent, we don't recruit — we build. We unite the top 2% of builders — engineers, architects, creators — into a movement across Europe and the GCC.
Vetted through our VECTOR7 Signal Stack, you're not just hired, you're chosen. This is more than work. This is where builders build the future.
About the RoleOur client is seeking a Full Stack Developer to drive the optimization and automation of a critical environmental impact calculation tool.
This freelance assignment is for 8 months, based in Aalst, Belgium, and offers the opportunity to shape digital solutions that directly support environmental sustainability and regulatory compliance.
You'll be at the heart of a project that transforms legacy processes into a robust, modern web application, empowering better water management for generations to come.
Why This Role Matters The project is pivotal in replacing outdated Excel/VBA modules with a scalable, secure, and user-friendly web application. Your work will enable our client to automate complex environmental assessments, ensuring that water quality standards are met and environmental objectives are achieved.
your code will help protect water resources, streamline compliance, and support climate adaptation efforts across the region.
Designing, developing, and optimizing a full-stack web application for environmental impact calculations
Translating functional requirements into technical solutions, ensuring alignment with best practices and standards
Building and maintaining robust RESTful APIs and service layers to automate step-by-step environmental assessment processes
Developing modern, responsive front-end interfaces using HTML5, JavaScript, Angular, and TypeScript
Implementing secure authentication and user access controls, integrating with central login services
Ensuring seamless data integration with reporting tools such as Cognos and Power BI
Driving quality through Test-Driven Development (TDD), including unit and integration testing (JUnit)
Collaborating in an Agile environment, working closely with colleagues and end users to deliver high-impact solutions
Coaching and leading other developers, fostering a culture of technical excellence and continuous improvement
Ensuring code versioning and CI/CD practices using tools like GIT, Subversion, Maven, and Atlassian suite (Jira, Bamboo, Confluence)
Contributing to technical analysis, debugging, and rapid problem-solving throughout the project lifecycle
5+ years of demonstrable experience in full stack development
Expertise in RESTful API design and implementation
Strong back-end programming skills: Java, Spring Boot, Spring Framework, Test Driven Development
Front-end development: HTML5, JavaScript, Angular, TypeScript
JUnit, integration testing
Experience with JPA/Hibernate for data persistence
Proficiency with code versioning tools:
Jira, Bamboo, Confluence
Experience with Docker (nice to have)
Knowledge of Agile methodologies, with the ability to take a leading role
Experience working within or for government agencies (nice to have)
Fluency in Dutch at European CEFR level C2 is required
This is a freelance position for 8 months, with an estimated 1200 hours and a 100% work regime
At least one day per week onsite; remote work is possible
To be determined by mutual agreement (target: May 2026)
Development is carried out in an Agile environment
Applicants must use their own company license for Office software (LibreOffice can be provided as an alternative)
Interviews will be scheduled in February 2026 for shortlisted candidates
Vetting ProcessAll candidates are rigorously vetted through our VECTOR7 Signal Stack, ensuring only the top 2% of tech builders join this mission-critical project.
Ready to build the future? Upload your CV and join the movement.
#RELYzIT #TechJobs #FreelanceTalent #Aalst #FullStack #Java #SpringBoot #Angular #TypeScript #REST #Agile #DutchC2 #TDD #JUnit #GIT #Maven #JPA #Docker
¿Te interesa este puesto?