(Updated: April, 2020)
Modern Pharmacy for Prescription Deliveries
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Customer Comes First
Actively Practices Inclusion
Engages with Community
Cross-Department Collaboration
Fast-Paced Environment
Rapidly Growing Team
B2C
Technical Founder(s)
Tech Stack
React Native, React, Ruby on Rails, Go
Connecting people and their doctors
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Risk-Taking > Stability
Customer Comes First
Fast-Paced Environment
Rapidly Growing Team
Bonded by Love for Product
Open Communication
B2B
B2C
Technical Founder(s)
Tech Stack
Ruby on Rails, AngularJS, Python, SQL, Postgres, Docker, AWS
Real-time cannabis marketplace
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Bonded by Love for Product
EQ > IQ
Creative + Innovative
Start-to-Finish Ownership
Continuous Feedback
Promotes from Within
Continuous Delivery
Heavily Team Oriented
B2B
B2C
Technical Founder(s)
Tech Stack
Backend: Ruby on Rails. Frontend: ReactJS + Typescript.
Networked warehousing and distribution
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Customer Comes First
Start-to-Finish Ownership
Work/Life Balance
Open Communication
Continuous Feedback
Safe Environment to Fail
Cross-Department Collaboration
Continuous Delivery
B2B
Technical Founder(s)
Tech Stack
Elixir/Phoenix, Ruby/Rails, Javascript, React, PostgreSQL, Elastic, Kafka, Heroku, and Google Cloud Platform
A simple back-office tool for architects
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Work/Life Balance
Design-Driven
Eats Lunch Together
Committed to Personal Growth
Start-to-Finish Ownership
Wears Many Hats
Creative + Innovative
Safe Environment to Fail
B2B
Technical Founder(s)
Tech Stack
Ruby on Rails, React, JavaScript (ES6), HTML+CSS, Figma, Webflow, Pencil and Paper
Leading Software-Powered Freight Forwarder
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Eats Lunch Together
Customer Comes First
Fast-Paced Environment
Work/Life Balance
Wears Many Hats
Open Communication
Promotes from Within
Impressive Team Members
B2B
Tech Stack
Frontend: React, Relay, Flow, Jest, Enzyme.
Mobile: React Native, Apollo.
Backend: Ruby on Rails, Postgres, GraphQL, Python, RSpec.
CI: GitHub, Buildkite.
Infrastructure: AWS, Python.
Visual communication and accountability tools for construction, roofing, and more
Marketing Web Developer
Lincoln, NE
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Work/Life Balance
Flexible Work Arrangements
Ideal for Parents
Product-Driven
Fast-Paced Environment
Rapidly Growing Team
Cutting-Edge Technologies
Light Meetings
B2B
B2C
Self-Funded
Remote-OK
Tech Stack
On the web, we’re a Ruby on Rails shop with a React.js front-end. Other items in our stack are Sass, Webpacker, Postgres, Mongo, Kafka, S3, AWS Lambda, Terraform, and Docker.
On Mobile, our apps are primarily built with React Native alongside some custom native libraries in Java, Objective-C, Swift, and C++ for core functionalities. We use Apollo and GraphQL, alongside Redux for local state management.
Data analytics platform
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Safe Environment to Fail
Actively Practices Inclusion
Fast-Paced Environment
Team is Diverse
Open Communication
Product-Driven
Promotes from Within
Rapidly Growing Team
B2B
Technical Founder(s)
Remote-OK
Tech Stack
Go 1.3, Rails 5.1, Ruby 2.6, Java 8, PostgreSQL 9.4, TypeScript 3.5, Angular 8, AWS
Groceries delivered from local stores
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Start-to-Finish Ownership
Wears Many Hats
Cutting-Edge Technologies
Internal Mobility
Open Communication
Engages with Community
Cross-Department Collaboration
Eats Lunch Together
B2B
B2C
Technical Founder(s)
Tech Stack
Rails 5.2, Ruby 2.3.7, Python, R, PostgreSQL 9.6, React 0.17, AWS, Docker, RabbitMQ, Sidekiq, Snowflake
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Bonded by Love for Product
Fast-Paced Environment
EQ > IQ
High Quality Code Base
Open Communication
Heavily Team Oriented
Start-to-Finish Ownership
Thoughtful Office Layout
B2C
Technical Founder(s)
Tech Stack
Ruby on Rails, React, Redux, React Native, Backbone, Apollo, GraphQL, Redis, ElasticSearch, Postgres, Heroku, Airflow, Python 3
Mobile-based personal and professional development platform
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Committed to Personal Growth
EQ > IQ
Start-to-Finish Ownership
Safe Environment to Fail
Product-Driven
Actively Practices Inclusion
Fast-Paced Environment
B2B
Remote-OK
Tech Stack
Ruby on Rails, Ember.js, iOS app (Swift), Android app (Kotlin/Java)
Career network for college students and recent grads
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Bonded by Love for Product
EQ > IQ
Actively Practices Inclusion
Fast-Paced Environment
Committed to Personal Growth
Safe Environment to Fail
Start-to-Finish Ownership
Customer Comes First
B2B
B2C
Technical Founder(s)
Remote-OK
Tech Stack
Backend: Ruby on Rails, Postgres, Elasticsearch, Google Cloud Platform, Kubernetes.
Frontend: Typescript, React, Redux.
Data: BigQuery, BigTable, DataFlow, DataProc.
Mobile App Intelligence
Ruby on Rails Developer
Minsk, Belarus
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Customer Comes First
Start-to-Finish Ownership
Data-Driven
Flexible Work Arrangements
Friends Outside of Work
Thoughtful Office Layout
Committed to Personal Growth
Open Source Contributor
B2B
Self-Funded
Technical Founder(s)
Tech Stack
Rails, MongoDB, Knockout, Go, AWS
Creating cloud-managed IT that simply works
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Start-to-Finish Ownership
Wears Many Hats
Safe Environment to Fail
Creative + Innovative
Open Communication
Continuous Delivery
Engages with Community
Work/Life Balance
B2B
Technical Founder(s)
Tech Stack
Javascript (React/Redux), Ruby on Rails, Scala, Postgres, LittleTable
The world’s platform for change
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Work/Life Balance
Committed to Personal Growth
Actively Practices Inclusion
Engages with Community
Team is Diverse
Data-Driven
Start-to-Finish Ownership
B2C
PBC / B-Corp
Tech Stack
Ruby on Rails, Elixir, React.js, GraphQL, Node.js, AWS, Redis, Spark & Scala (Data team)
Payroll, Benefits, and HR for Modern Companies
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Start-to-Finish Ownership
Customer Comes First
Open Communication
Pair Programs
Actively Practices Inclusion
Committed to Personal Growth
Rapidly Growing Team
Work/Life Balance
B2B
Technical Founder(s)
Remote-OK
Tech Stack
Ruby, Rails, Javascript, React, MySQL, Kubernetes
Agile Product Development Consultancy
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Work/Life Balance
Uses Agile Methodologies
High Employee Retention
Fosters Psychological Safety
Cross-Department Collaboration
Engages with Community
Ideal for Parents
Eats Lunch Together
B2B
Technical Founder(s)
Tech Stack
The majority of our work is in Rails, Node, and Java, but almost everything is up for grabs. The only tech we don’t work in is .NET and PHP.
Personal Style Service
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.EQ > IQ
Continuous Delivery
Cross-Department Collaboration
Promotes from Within
Rapidly Growing Team
Continuous Feedback
Data-Driven
Actively Practices Inclusion
B2C
Remote-OK
Tech Stack
Ruby on Rails
Swift
Postgres
Redis
Memcache
RabbitMQ
AWS
Heroku
Software Product Development Firm
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Start-to-Finish Ownership
Cutting-Edge Technologies
Uses Agile Methodologies
Pair Programs
Impressive Team Members
Cross-Department Collaboration
Work/Life Balance
Creative + Innovative
B2B
Self-Funded
Technical Founder(s)
Tech Stack
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
Marketplace for Local Care Services
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Data-Driven
Committed to Personal Growth
Continuous Feedback
Safe Environment to Fail
Promotes from Within
Cross-Department Collaboration
Flexible Work Arrangements
Start-to-Finish Ownership
B2C
Technical Founder(s)
Tech Stack
Ruby 2.3, Rails 4.2+, Rspec React, Jest ES6+, Babel NodeJS 8.1 GraphQL PostgreSQL, MySQL Redis AWS Periscope
Seed Funding for Startups
Data Scientist, Admissions
San Francisco and Mountain View, CA
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Start-to-Finish Ownership
Customer Comes First
Ideal for Parents
Flat Organization
Creative + Innovative
Impressive Team Members
Cross-Department Collaboration
B2B
Technical Founder(s)
Tech Stack
The YC internal software is mostly written in Ruby on Rails and React. We’re hosted on AWS and PostgreSQL. Some experience developing web apps would be helpful, but we don't care if you've used Rails before.
Note: Hacker News is written in Lisp, but Hacker News is run by a separate team. While we don't use Lisp anymore in our internal software, we retain the original motivation for it, and welcome Lisp hackers to join us.
Data Sharing Partnerships for Marketers
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Start-to-Finish Ownership
Customer Comes First
Wears Many Hats
Impressive Team Members
High Quality Code Base
Open Communication
Promotes from Within
High Employee Retention
B2B
Technical Founder(s)
Tech Stack
React
Ruby on Rails
Java
AWS
API for Background Checks
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Engages with Community
Cross-Department Collaboration
Continuous Delivery
Fast-Paced Environment
Safe Environment to Fail
Rapidly Growing Team
Eats Lunch Together
Team is Diverse
B2B
Technical Founder(s)
Tech Stack
Ruby / Javascript / Python / Golang
Sinatra / Rails / React
MySQL / Mongo
Presto for data warehouse
Docker / Kubernetes for deployment
REST / JSON / gRPC for service communication
Distributed Revision Control and Source Code Management
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.EQ > IQ
Customer Comes First
Pair Programs
Work/Life Balance
Product-Driven
Flexible Work Arrangements
Fosters Psychological Safety
Creative + Innovative
B2B
B2C
Technical Founder(s)
Remote-OK
Tech Stack
GitHub is a Rails 4 application that is composed of a large monolith and a constellation of services written in Ruby, Go, and a handful of other languages. The app and its services are exposed both internally and externally via a GraphQL API. We primarily rely on MySQL for persistent storage, Redis for temporary storage, and, as you might expect, a lot of git repositories. We rely on Kubernetes for container orchestration.
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Pair Programs
EQ > IQ
Continuous Delivery
Product-Driven
Start-to-Finish Ownership
Work/Life Balance
Committed to Personal Growth
B2B
B2C
Technical Founder(s)
Tech Stack
Ruby on Rails, React, React Native (iOS & Android), Postgres, Sidekiq … and lots of testing and CI tools!
Social Media SAAS Tool
Software Engineer
San Francisco, CA
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Open Communication
Product-Driven
Heavily Team Oriented
Committed to Personal Growth
Fast-Paced Environment
Creative + Innovative
High Employee Retention
B2B
Self-Funded
Technical Founder(s)
Tech Stack
Ruby on Rails, JavaScript, HTML, CSS, AWS SES, S3, Cloud hosted backed with AWS
Winery Fulfillment, Ecommerce, and POS
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Open Communication
Start-to-Finish Ownership
Safe Environment to Fail
Cutting-Edge Technologies
Promotes from Within
Friends Outside of Work
Work/Life Balance
Eats Lunch Together
B2B
Remote-OK
Tech Stack
Languages/Frameworks: Angular, Node, Serverless Lambda, Rails, Coldfusion
Databases: MSSQL, Aurora
Cloud Providers: AWS
Planning Platform for Public Transit
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Bonded by Love for Product
Continuous Feedback
Customer Comes First
Product-Driven
Engages with Community
Open Communication
Actively Practices Inclusion
Eats Lunch Together
B2B
Technical Founder(s)
Tech Stack
Our main app is a Ruby on Rails API, with a Postgres and PostGIS database and a front-end built using React.js. It’s hosted in Heroku. We also have a variety of services built in Python that are hosted on AWS.
Digital Products for Mobile and Web
Fullstack Developer
Hamburg, Germany
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Heavily Team Oriented
Open Communication
Work/Life Balance
Flat Organization
Uses Agile Methodologies
Flexible Work Arrangements
Continuous Feedback
Committed to Personal Growth
B2B
Tech 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
Worker-Run Development Shop
Ruby on Rails Developer
Brooklyn, NY
Top Engineering Values
Each team is asked to select, explain, and rank their top 8 values in order of importance.Team is Diverse
Actively Practices Inclusion
Safe Environment to Fail
Open Communication
Work/Life Balance
High Quality Code Base
Pair Programs
Wears Many Hats
B2B
Self-Funded
Technical Founder(s)
Tech Stack
Ruby on Rails, Java, Python, Haskell, Postgres, Redis, AWS, Docker
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