工程師們會用到什麼技術與工具呢？
frontend:
language: javascript, typescript
framework: react.js, redux
build tool: webpack, lerna
test: jest, cypress
backend:
language: ruby
web app framework: ror, sidekiq
database: mysql
version control: git
devops:
language: python, ruby on rails
tools: aws, kubernetes, docker, datadog, terrafform, airflow, mysql (aws rds), git, circleci, jenkins, cloudflare, linux
aws: rds, iam, route53, ec2, elastic kubernetes service, s3, elasticache (redis), elastic container registry, cloudwatch, vpc elb
除了infra工程師需要輪班以外，我們都是彈性上下班，一週工時 40 小時。  
另外，我們不會經常性加班，加班會有補休。