So, who’s Mustapha?

Product Designer & Conversion Specialist with 9 years of experience helping global 🌍 brands create data-driven products/designs that fuel growth. Certified in Conversion Optimization (CXL), Data Analysis, and Design Thinking.
Passionate about people and impact — I love seeing customers enjoy what I build. Outside work, I’m a family man who enjoys exploring new things, rewatching The Godfather for the 30th time, walking, listening to Mozart, or boxing to recharge.
Experience
ConversionFlow • Conversion Designer & CRO Specialist
January 2024 - Present
Houston Texas, US-based agency, where I work on analyzing client websites end-to-end — from research and ideation to hypothesis creation, test design, and execution — achieving a 97% success rate in A/B testing. I collaborate with enterprise-level clients such as RTIC, Dermaclara, DiscountFilters, FiggyPlay, and others under NDA. I also developed a custom experimentation tracking system used to monitor performance from initial research through test deployment, tracking every micro and macro KPI across key pages.
ConvertLab • UX/UI Conversion Designer
January 2022 - January 2024
Alicante, Spain-based agency, where I worked on designing high-converting interfaces based on existing hypotheses and insights, while also contributing my own ideas to improve performance. The focus was on creating visually polished, conversion-driven designs for high-profile clients, including Hills by Iman Gadzhi and others.
Labrigart Design GmbH • Conversion Designer & CRO Specialist
January 2019 - 2022
TĂĽbingen, Germany-based agency, where I focused on conversion-driven design, creating interfaces aimed at maximizing performance while maintaining strong visual quality. In addition to design work, I developed internal guides to help other designers approach ideation and research more effectively, ensuring consistency and a results-oriented design process.
Agencies and Startups • UI & Web Designer (Freelance)
January 2016 - 2019
Worked as a freelance UI/UX and web designer, collaborating directly with, agencies, startups and small clients on Shopify, WordPress, and SaaS projects. Handled end-to-end design from UX and UI in Figma to full website builds—while also auditing ad campaign landing pages to identify conversion opportunities and improve performance.
Education
Conversion Optimization • CXL
UI Design Patterns for Software • IxDF
Product Design • UX Database
Journey Mapping • IxDF
Agile Methods for UX Design • IxDF
UX Design • IxDF
Bachelor's degree in Marketing • FST
People & Psychology • CXL
Data-Driven Design • IxDF
Mobile UI Design • IxDF
Human-Computer Interaction • IxDF
UX Management • IxDF
Design Thinking • IxDF
Two year University degree in Systems Development • BTS

Let’s create experiences people love — and brands grow from

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