Job Specifications
Senior Full Stack Developer – AI & Innovation PZA (Freelance) - 16 Months - Antwerp, 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.
We are seeking elite Full Stack Developers to join our client’s AI & Innovation team, driving the next generation of AI-powered solutions for public safety and innovation. This is a freelance opportunity for 16 months, based in Antwerp, Belgium, with the flexibility of remote work.
Why This Role Matters
Our client’s AI & Innovation team is at the forefront of developing advanced AI applications that empower a broad user base, including analysts, detectives, and intervention teams. Your work will directly impact the effectiveness and efficiency of critical operations, leveraging locally hosted AI models in computer vision, natural language processing, and more. The stakes are high: your code will help shape safer, smarter communities and set new standards for AI-driven public sector solutions.
What You’ll Be Doing
Designing, developing, and maintaining full stack applications that integrate advanced AI components
Integrating AI models into high-performance, scalable applications
Building robust back-end services and user-friendly front-end interfaces
Testing, debugging, and optimizing existing solutions for reliability and speed
Collaborating within a highly agile, security-focused environment
Leading and coaching development teams, fostering a “get-it-done” mentality
Working autonomously while contributing to a dynamic, impact-driven team
Ensuring compliance with IT code and NDA requirements
What We’re Looking For
Minimum 5 years of demonstrable experience in full stack development, with a proven track record of coding, testing, and debugging complex applications
Hands-on experience leading development teams and coaching fellow developers
Strong ownership mindset, problem-solving drive, and a passion for delivering impact
Ability to work fluently and autonomously in a fast-paced, agile environment
Experience working within secured, complex IT environments
Technical Skills
React (front-end development)
CSS (styling and responsive design)
Node.js (back-end development)
PostgreSQL (database management)
Python (AI integration and scripting)
Docker (containerization and deployment)
TypeScript and Tailwind (for stand-alone applications outside the Focus platform)
Experience with locally hosted LLMs via vllm
Familiarity with Nvidia Deepstream
Knowledge of vision models such as YOLO, DETR, ResNet, CLIP, DINO, SAM, InternVL
Experience with training and fine-tuning AI models (dataset curation, training procedures)
Agile development methodologies, with the ability to take a leading role
Language Proficiency
Fluency in Dutch at European CEFR level C2 is mandatory
About the VECTOR7™ Signal Stack
Every candidate is rigorously vetted through our proprietary VECTOR7™ Signal Stack — a multi-layered assessment ensuring only the top 2% of tech talent join our movement. You’re not just another applicant; you’re a builder chosen to shape the future.
Ready to build the future with us? Upload your CV now and join the movement.
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About the Company
At RELYzIT, we are on a mission to revolutionize businesses in the digital age by empowering them with cutting-edge technology solutions. Our extensive range of services, including blockchain-based solutions, Cloud, Security, Infrastructure, Data Science and Engineering, and Web Development, enables us to create a lasting impact.
With our innovative blockchain-based solutions, we unlock a world of possibilities for businesses, enhancing efficiency, transparency, and security. Our expert team crafts secure, decentralized sys...
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