Hello, I'm Json

My name is Jason, but many people call me Json.

I work in the world of product led growth. I lead Growth Engineering at Strava, write about my work and advise other companies.

Want to work together? Send me a message on Linked In.

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About Me

Hello there! My name is Jason van der Merwe, but many folks call me Json. I currently lead several engineering teams at Strava. My engineering background is primarily in iOS development.

When I'm not working, I'm either cycling, running, cooking or building something. I'm currently building furniture for my house and learning various woodworking techniques.

Professional Background

Hello there! My name is Jason van der Merwe, but many folks call me Json. I currently lead several engineering teams at Strava. My engineering background is primarily in iOS development.

When I'm not working, I'm either cycling, running, cooking or building something. I'm currently building furniture for my house and learning various woodworking techniques.

Partners
Testimonials
Services
  • Growth Modeling

    LTV, New User Activation, Winback Retention... Let's build your growth model to understand the performance of your business.

    Building and understanding and your growth model is an important step in understanding your business performance as well as the opportunities you have to increase retention or revenue. I can work with you to build your growth model and begin identifying opportunities for improvement. By the end of this exericse, you'll have clear insight into user metrics like new user activation and winback retention. We will also look at various options for calculating LTV if that applies to your business.

  • Paywall Strategy

    The subscription business model is now the status quo, but designing your paywall and its mechanics is not a simple task. I can help design and test your paywall strategies, from acquisition to retention.

    Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

  • Product Led Growth

    I'll partner with you to identify various methods to increase organic top of funnel and down the funnel growth without relying on paid acquisition.

    Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

  • AB Testing Strategy

    Whether you're just getting started or trying to determine whether a new feature or business model will work, I can help ensure your strategies are sound and will result in actionable learnings.

    Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

  • Org Structure

    Building a growth org requires a different approach from building your product org. Let's figure out what makes sense for your business.

    Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

  • Tools & Technologies

    MMPs, Analytics platforms, AB testing software, CRM platforms... I can help identify which ones you need, which ones you don't, and how to approach integration.

    Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

Growth Posts

I've spent the last 7 years of my career working on product led growth at Strava. Throughout this time, Strava has grown from less than 10MM users to over 100MM. I write about the lessons I've learned, what has worked for us and some of my perspectives on how to build a successful Growth organization. My hope is that other teams can learn something from my experiences.

I also do advising for companies who are looking towards product led growth to help their business grow. If you're interested in how I might be able to help, please connect with me on LinkedIn.

  • 01
    • June 20, 2022
    • Growth Orgs

    What's the Purpose of a Growth Team?

    Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

  • 02
    • July 01, 2022
    • Feature Education

    Building a Feature Education Coordination Platform

    Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

  • 03
    • June 11, 2018
    • Hypothesis Driven Iterative Development

    Case Study: Building Features with an Iterative Approach

    Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

  • 04

    Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

  • 05
    • Sept 3, 2022
    • Growth Technology

    A Crash Course in Deeplinking

    Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

Food

I like to make food. I have a website dedicated to the recipes I've come up with. Go over to Food by Json if you're intrigued. Otherwise, enjoy these photos of food that I've made.

Travel

I love traveling! It's such a great way to explore other cultures and ways of life. Travel offers such amazing perspectives on our own lives. I was lucky enough to travel extensively as a kid and now I try to travel as much as I can.


This section of my website is dedicated to some of those adventures. I hope that my explorations will pique someone's interest and they will go somewhere they've never gone before. Maybe that person will be you!

Favorite Places
  • San Francisco, California
  • Sea Ranch, California
  • Mexico City, Mexico
  • Barcelona, Spain
  • Grindelwald, Switzerland
  • Cinque Terre, Italy
Travel Coverage
North America45%
South America20%
Europe70%
Asia25%
Africa10%
Oceania10%
  • Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

  • Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

  • Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

  • Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

  • Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

  • Cavani is a leading web design agency with an award-winning design team that creates innovative, effective websites that capture your brand, improve your conversion rates, and maximize your revenue to help grow your business and achieve your goals.

    In today’s digital world, your website is the first interaction consumers have with your business. That's why almost 95 percent of a user’s first impression relates to web design. It’s also why web design services can have an immense impact on your company’s bottom line.

    That’s why more companies are not only reevaluating their website’s design but also partnering with Kura, the web design agency that’s driven more than $2.4 billion in revenue for its clients. With over 50 web design awards under our belt, we're confident we can design a custom website that drives sales for your unique business.

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