Youssef Afif-Full Stack Software Developer

As a freelance AI Quality Evaluator for Mercor, I graded AI-generated PowerPoint presentations against detailed design-instruction rubrics, comparing multiple candidate decks per task across aesthetic ranking, style matching, template fidelity, and content-quality flows. I wrote structured, evidence-based rationales citing specific slide-level design deviations, and revised my evaluations based on reviewer feedback to meet strict grading and formatting standards.

Presentation Design Evaluation Project | Client: Mercor

• Assessed AI-generated PowerPoint decks against detailed design and content guidelines across multiple task types, applying structured 1–7 scoring rubrics with strict tie-breaking rules.
• Produced detailed, slide-cited rationales verifying adherence to typography, color palette, layout, and reusable design components, and incorporated reviewer feedback to improve rationale quality and consistency.

Technologies: PowerPoint (.pptx)

As a freelance AI Prompt Engineer for Outlier, I created and refined challenging prompts to evaluate and improve large language model (LLM) performance in Python and Java problem-solving. I assessed AI-generated solutions, rated their accuracy and quality, and rewrote responses to achieve higher clarity, correctness, and adherence to requirements.

AI Model Evaluation Improvement Project | Client: Outlier

• Designed technical prompts to test complex problem-solving skills in multiple programming languages.
• Conducted detailed evaluations of AI responses, comparing against human-written solutions, and applied targeted rewrites to enhance code efficiency, accuracy, and clarity.
• Contributed to improving model reasoning, output consistency, and alignment with project standards.

Technologies: Python, Java, IntelliJ, VS Code

Joined the early-stage MVP of the Citizen Project and quickly took ownership of the AI engineering. Led the design and full implementation of the RAG-based chatbot at the core of the platform — including the vector database pipeline, embeddings, and AI model integration — taking the feature from ideation to working MVP, helping Belgian citizens understand their legal rights through natural conversation.

Citizen: Aid to help Belgian citizens understand their rights | Client: Hayo Labs

• Contributed to the backend development of the application and led the ideation, design, and full implementation of the AI chatbot at its core.
• Took complete ownership of the AI feature from concept to working MVP.

Technologies: Vector databases, Retrieval-Augmented Generation (RAG), Embeddings, AI model fine-tuning, Python, Django, React

Developed and maintained websites for various clients, delivering end-to-end services from design to deployment. Key projects include:

RehabApp: Online Rehabilitation Platform | Client: UZ Gent (University Hospital of Ghent)

• Designed and developed a full-featured rehabilitation platform for post-prosthesis patients. Features include a video library, digital diary, caregiver request system, and admin panel. Implemented secure email flows for credential delivery and password reset.
• Technologies: PHP, Laravel, Livewire, Composer, MySQL, Bootstrap, Tabler UI, Mailtrap

Advanced-Fit: Online Field Reservation and Team Composition Application | Client: Fit-Five (Indoor Mini-Football Center)

• Developed and implemented both back-end features and front-end interface, enabling users to seamlessly reserve fields and organize teams.
• Technologies: IntelliJ, Java, Spring Boot, MySQL, Bootstrap

The DecisionMaker: VR Game for Student Orientation | Client: Erasmus Hogeschool Brussel

• Created an immersive VR environment and game mechanics to engage and assist new students during open days, enhancing their onboarding experience.
• Technologies: Unity, C#, Oculus Quest

Schmitter: Social Network for Students | Client: Erasmus Hogeschool Brussel

• Designed and developed a Twitter-like social network tailored for student interaction, handling both back-end and front-end development.
• Technologies: Visual Studio Code, Laravel (Livewire), HTML, CSS, PHP, JavaScript, MySQL, phpMyAdmin, Node.js, Composer

Festiv-IT: Hackathon System Integration | Client: Erasmus Hogeschool Brussel

• Led the integration of the Point Of Sale (POS) system for a large-scale hackathon event, developing necessary features to ensure seamless operations.
• Technologies: Visual Studio Code, Odoo POS, Linux, Docker, Python, RabbitMQ

Network Project (Proof of Concept): Secondary School Network Design | Client: Sint-Jozefschool Secundair (Erpe-Mere)

• Conducted a comprehensive infrastructure analysis, followed by the design and implementation of a reliable network, including cabling, equipment selection, and configuration of routers, switches, and WiFi access points.
• Technologies: Cisco

Network Project: Home Network Design and Implementation | Client: Private Individual

• Analyzed residential requirements, selected appropriate equipment, and installed a robust network with configuration of switches and WiFi access points for optimal performance.
• Technologies: Netgear

Assisted in customer service, invoice processing, and database management. Conducted telephone satisfaction surveys in French and Dutch, contributing to customer relationship management.