CodeSandbox: Online Code Editor with Bas Buursma and Ives van Hoorne

Upcoming events:

A Conversation with Haseeb Qureshi at Cloudflare on April 3, 2019

FindCollabs Hackathon at App Academy on April 6, 2019

Coding in the browser has been attempted several times in the last decade. Building a development environment in the browser has numerous technical challenges. How does the code execute safely? How do you fit all of the requirements of a development environment into a browser window? How do you get users to switch from their normal IDE (interactive development environment)?

CodeSandbox is an online code editor created by Ives van Hoorne and Bas Buursma. CodeSandbox allows users to program and run applications in the browser. It is a full developer platform that allows users the ability to install npm modules, run their code, and share their applications with other users.

The engineering problems within CodeSandbox are not easy–building a web-based IDE is complicated. But CodeSandbox is also an exciting project because it lowers the barrier to entry for many newer programmers. The development experience for a new programmer is still a difficult onramp.

If you are an experienced developer, you have a workflow that you are comfortable with. It might involve vim, or emacs, or JetBrains IDEs, or Eclipse. But newer developers can find these environments confusing and hard to get started with. The development environments of today are integrated with build tools, Github repositories, and deployment platforms. This can be overwhelming for a newer developer.

CodeSandbox is a very visual tool, which makes it especially useful for new developers who learn through seeing examples running live in the browser. CodeSandbox is also used by web developers who want a modern, shareable form of developing software.

Ives and Bas join the show to talk about the motivation for CodeSandbox and the engineering challenges they have solved.


Transcript provided by We Edit Podcasts. Software Engineering Daily listeners can go to to get 20% off the first two months of audio editing and transcription services. Thanks to We Edit Podcasts for partnering with SE Daily. Please click here to view this show’s transcript.


Bitbar tests your app on real devices–no emulators or virtual environments. Bitbar has real Android and iOS devices, and the Bitbar testing tools integrate with Jenkins, TravisCI, and other continuous integration tools. Check out and get a free month of unlimited mobile app testing.

G2i is a hiring platform run by engineers that matches you with React, React Native, GraphQL, and mobile engineers who you can trust. Whether you are a new company building your first product or an established company that wants additional engineering help, G2i has the talent you need to accomplish your goals. Go to

Logi Analytics provides embedded business intelligence that goes beyond dashboards and reports. Create, deploy, and constantly improve analytic applications that engage users and drive revenue. You focus on building the best applications for your users, while Logi gets you there faster and keeps you competitive. Logi is a powerful yet nearly invisible business intelligence solution. Check it out by going to

GoCD is a continuous delivery tool created by ThoughtWorks. It’s great to see the continued progress on GoCD with the new Kubernetes integrations–and you can check it out for yourself at

Software Weekly

Software Weekly

Subscribe to Software Weekly, a curated weekly newsletter featuring the best and newest from the software engineering community.