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Ruby on Rails, React, React Native (iOS & Android), Postgres, Sidekiq … and lots of testing and CI tools!

Learn more about how we Run Less Software.

Ruby, Rails, Go (Backend) React, Flow, styled-components, Mobx (Frontend) Swift (iOS) Kotlin (Android)

Node.js, Go, Scala, AWS, React, GraphQL, iOS (Objective-C & Swift), Android (Java)

React/Redux

Android (native, Kotlin)

Python (using Flask / SQLAlchemy)

Postgresql

AWS

Some popular languages and frameworks we use are: (Web) JavaScript, Python, Go, Java, PHP, Ruby | Node.js, Express, Spring, ReactJS, Redux, Typescript, Rails. (Android) Kotlin, Java | RxJava, React Native. (iOS) Swift, Objective-C | RxSwift, React Native

Web - Node, React, Python, PostgreSQL

Mobile - React Native, Swift (iOS) / Java (Android)

While we use a variety of cutting edge web and mobile technologies at Braze, we're constantly evaluating new tools and encourage everybody to identify the right tool for the job. Additionally, we care little about the language-specific knowledge that you have walking through the door - we're much more interested in finding talented team members who are quick learners with excellent software fundamentals.

We build SDKs for Java/Android, Objective-C/iOS, and Javascript/Web. We also build wrapper SDKs for Unity, Xamarin, Cordova, Segment, and React Native. We support sending push notifications to Kindle devices and to Android devices via Baidu.

Our dashboard is a Ruby on Rails web application built on top of Redis and MongoDB. We have a data streaming infrastructure built on Kafka. On the frontend, we use a combination of React, Knockout, ES6, and Coffeescript.

Frontend: Javascript, React, Typescript, Flow, Mobx, Stylus, Redux, Reactive JS, Styled Components, Focal (our own in-house, open-sourced state management framework)

Mobile (iOS and Android): Java, OkHttp, Butterknife, Retrofit, XCode, Swift, ReactiveCocoa, ReactiveSwift, Kickstarter-Prelude, Argo, Runes, Curry

Desktop app: CoffeeScript, Electron.js, C#, F#, ReactiveUI

Internal tools: Angular, Elm, ClojureScript

Backend: Java, Scala, Python, Haskell, Lisp, Clojure, Go, C++

NLP/Research teams: sklearn, TensorFlow, PyTorch, CNN, RNN, Keras, Seq2Seq, xgboost, CRFs, nltk/spacy/OpenNLP, OpenNMT, Jupyter notebooks

TypeScript, JavaScript, and React

Scala (high performance backend)

Python (infrastructure management and data analysis)

Android and iOS

Luna1 (legacy in-house functional reactive framework, similar to Meteor)

We use a LAMP (Linux (Ubuntu), Apache, MySQL, PHP) and have iOS and Android clients that we developer natively in Swift and Kotlin. We also integrate with the Clover POS terminals. We’re infinitely curious so we also dabble in lots of other tech but this is our official stack.

mindmatters develops software for a variety of customers. Depending on the project specifics we choose mostly Java/Spring Boot, Ruby on Rails, JavaScript, React, Angular 2+, Swift, Objective-C, Android

Python / Django Scala Golang Postgres Cassandra ElasticSearch Redis AWS (EC2, S3, ALB, EBS, Kinesis, SQS) Linux (Ubuntu)

iOS team: Swift & Objective-C. Android team: Java. Desktop team: Electron, web stack (js, css, etc.). Service team: Java, AWS, devops.

AWS rds + mysql for data storage API is in python + flask apache thrift for interface definition android app is in java ios apps in swift 3 front-end web is in python, flask, node, and react

C++, Go, RoR, JavaScript, PHP, Swift, Java (Android), Javascript (ReactJS, VueJS), NodeJS