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Leroy StedingLS

Leroy Steding

Senior Full-Stack Developer

€750/day
Zaandam, NL
8-15 years

Average response time: 1 hour

About Leroy

As a seasoned Front-end Developer passionate about React and DevOps, I specialize in creating high-performance digital experiences. My expertise includes developing scalable mobile and web applications, ensuring top-notch code quality, and delivering exceptional user satisfaction.

I thrive on leveraging modern tech stacks such as Turbo Monorepo, MedusaJS, Python FastAPI, OpenAI, LangChain, TypeScript, Next.js, Tailwind, Redux, and React Native with Expo. My focus is on building efficient system integrations, enhancing user experiences, and implementing robust CI/CD pipelines for seamless deployment.

With extensive experience in eCommerce development, I design and implement multi-tenant platforms, omni-channel solutions, and POS systems tailored for both online and physical stores. My projects frequently incorporate modern technologies like MedusaJS to deliver customizable and scalable eCommerce experiences.

With a strong background in HTML, CSS, JavaScript, and various frameworks, I excel in creating responsive, user-friendly interfaces. I am also skilled at mentoring teams, collaborating with stakeholders, and driving projects from concept to completion.

I am always eager to take on new challenges and contribute to innovative projects that make a significant impact. Let’s connect to build outstanding digital and eCommerce solutions together!
  • Dutch

    Native or bilingual

  • English

    Fluent

Can work on-site
Zaandam (up to 50km)

Experience

  • SURF
    Senior Front-end Developer
    EDUCATION AND E-LEARNING
    March 2025 - Today (1 year and 3 months)
    Utrecht, Netherlands
    Building enterprise whitelabel platform supporting multiple Next.js applications in Turborepo monorepo. Developing shared UI component library with Tailwind CSS, TypeScript, and Storybook for Edusources and MBOdata.
    • Reduced development time by 40% Achieved
    Typescript Next.js tailwind storybook Monorepo
  • Hifive
    Founder & Lead Developer
    July 2013 - Today (12 years and 11 months)
    Zaandam, NH, Netherlands
    Founded digital innovation agency specializing in custom e-commerce platforms, mobile applications, and websites with AI technologies and software integrations.
    • Successfully delivered 100+ custom projects
    • Built long-term partnerships with 50+ clients
    • Pioneered AI integration in Dutch SMB market
    • Maintained 95% client retention rate
    Technologies: Next.js, React Native, AI/ML, Python, FastAPI, TypeScript, E-commerce, MedusaJS, Tailwind
  • VodafoneZiggo
    Senior Frontend Developer
    November 2024 - March 2025 (4 months)
    Utrecht, Netherlands
    Developed high-performance cross-platform mobile applications with React Native, Expo, and TypeScript. Built scalable design system with Storybook.
    • Delivered mobile app serving 3M+ active users
    • Achieved 99.9% uptime and 4.5+ star app store rating
    • Reduced component development time by 50% with design system
    • Maintained 90%+ test coverage across codebase
    Technologies: React Native, Expo, TypeScript, Storybook, Jest, WCAG, SonarQube, ESLint

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Education

  • Bachelor of Science
    Hogeschool van Amsterdam (Amsterdam University of Applied Sciences)
    2019
    Bachelor of Science
  • Application Developer (MBO Level 4)
    Regio College
    2014
    Application Developer (MBO Level 4)

Skill set

Categories