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KotlinSoftware

10 companies

Cash AppCompany
Block's mobile payments and banking app
loved

At Cash App we use Kotlin on all of our platforms.

Cash App on its Kotlin adoption timeline across Android, backend and iOS

code.cash.app ↗·2023-06-06Wrong?

SquareCompany
Payments and commerce company (Block), maker of Square seller tools
loved

We’re committed to Kotlin at Square. These changes should help improve the developer experience of our libraries for all of you who have also embraced the language on your platform of choice.

Square on committing to Kotlin after approving it internally in 2015

developer.squareup.com ↗·2017-05-12Wrong?

Khan AcademyCompany
Non-profit offering free online education.
liked

We started using Kotlin for specific jobs within Khan Academy a year ago. Its performance benefits have saved us money, which we can apply in other ways to help people around the world learn.

Khan Academy on Kotlin, the runner-up to Go

blog.khanacademy.org ↗·2019-12-20Wrong?

NubankCompany
Brazilian digital bank and fintech
liked

Drawing from our own experiences (80% of our Android codebase is Kotlin, Nubank's account is developed in React Native) and evaluating our alternatives against Nubank priorities, we feel like Kotlin is a great language to work with.

Nubank's mobile platform study, on Kotlin

building.nubank.com ↗·2019-09-30Wrong?

Booking.comCompany
Online travel booking platform
recommended

Always use Kotlin data classes for comparable entities.

Booking.com engineers on Kotlin vs Java object equality

medium.com ↗·2022-03-30Wrong?

ZalandoCompany
European online fashion and lifestyle retailer and marketplace
recommended

Recently , we moved Kotlin from TRIAL to ADOPT. With this change we are doubling down on the support of Kotlin as the 3rd JVM language next to Java and Scala .

Why Zalando moved Kotlin to ADOPT on its Tech Radar

engineering.zalando.com ↗·2021-07-01Wrong?

DoorDashCompany
Local commerce and food delivery platform
recommended

After surveying a number of different languages, we chose Kotlin for its rich ecosystem, interoperability with Java, and developer friendliness.

Why DoorDash migrated its backend services from Python to Kotlin

doordash.engineering ↗·2021-05-04Wrong?

DuolingoCompany
Language-learning app and platform.
recommended

Kotlin is far less verbose than Java, making it faster and easier to both write and (more importantly!) maintain.

Duolingo on migrating its Android app from Java to 100% Kotlin

blog.duolingo.com ↗·2020-04-06Wrong?

WiseCompany
International money transfer and cross-border payments company
uses

In the backend we are primarily using Java and Kotlin.

Wise's 2025 tech stack update: backend languages

medium.com ↗·2025-02-12Wrong?

CanvaCompany
Online design and visual communication platform.
uses

We switched out Javascript for Typescript with React, introduced Kotlin and Swift for our mobile apps, and added others for specifically selected purposes, such as Scala for our data science and machine learning team.

Canva on introducing Kotlin for its mobile apps

canva.dev ↗·2018-10-05Wrong?

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