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Sacha JsSJ

Sacha Js

Product Designer • Apps, Websites & Startups

€500/day
Amsterdam, NL
3-7 years

Average response time: 1 hour

About Sacha

I’m a Product Designer focused on mobile apps and startup products.

I help founders and teams turn ideas into clear, intuitive and well-structured digital products, from early concept and user flows to high-fidelity UI ready for development.

I’ve designed and built an app used by over 23,000 users, giving me real experience in creating products that are both user-friendly and scalable.

My approach combines strong UX thinking with clean, modern visual design, always with a focus on clarity, usability and execution.

Based in Europe, available for remote projects. Also available in Dutch 🇳🇱
  • Dutch

    Native or bilingual

  • English

    Native or bilingual

  • French

    Fluent

Remote only
Primarily works remotely

Experience

  • Ferox creations
    UI/UX & Graphic Designer | Mobile App Development
    TRAVEL AND TOURISM
    September 2019 - Today (6 years and 10 months)
    Soorts-Hossegor, France
    Freelance Product Designer working with startups and companies on mobile apps and digital products.

    I design clear, intuitive and scalable interfaces, from early concept and user flows to high-fidelity UI ready for development.

    I have collaborated with various clients across different industries, including projects for companies such as XReelz and Dis-Chem.

    My work focuses on simplifying complex ideas into clean, user-friendly experiences while ensuring strong visual consistency.

    I regularly work with developers to deliver production-ready designs.
    Digital Product Design User Interface Design App Design Start-up MVP Design
  • My Travel Tracker
    Founder
    TRAVEL AND TOURISM
    November 2019 - September 2021 (1 year and 10 months)
    Amsterdam, Netherlands
    Founded and designed a mobile app used by over 23,000 users.

    I was responsible for the full product design process, from initial concept to final UI, including user flows, structure and visual interface.

    The goal was to create a simple, intuitive and engaging experience allowing users to track and explore their travels.

    This project gave me strong experience in building real products from scratch, understanding user behavior and designing interfaces that are both clear and scalable.

    I also worked closely with developers to bring the product to life.
    App Design User Interface Design Product design Start-up Travel
  • Product Designer (UI/UX) – ROODS
    Brand and UI/UX designer
    TRAVEL AND TOURISM
    November 2024 - May 2025 (6 months)
    Amsterdam, Netherlands
    Worked on the design of a mobile application focused on location-based discovery, allowing users to explore cities through curated experiences.

    I was involved from early concept to final interface, contributing to the overall product structure, user experience and visual design.

    My role included defining user flows, designing intuitive interfaces and creating a consistent design system across the app.

    The goal was to transform a simple idea into a clear, engaging and easy-to-use product.

    I collaborated closely with the team and developers to ensure the designs were practical and ready for implementation.
    User Interface Design App Design Mobile Design Product design Travel

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