Teams using Logstash
Ahrefs
HQ: Singapore C++, DLang, OCaml... React, JavaScript, Gatsby... Elasticsearch, Logstash, Kibana...
Datadog
HQ: United States Java, Golang, JavaScript... Terraform, Datadog, Elasticsearch... Redis, Cassandra, PostgreSQL...️ AWS
Sketch
HQ: No office 🏡 Elixir, GraphQL, C++... JavaScript, React, ... Terraform, Jenkins, CircleCI... PostgreSQL, Redis️ AWS
Python 
Front-end 📊 Product/Management
JVM ☁️ DevOps
JavaScript BE 
Golang 🎨 UI/UX Design
📱 Mobile
PHP 
C#/.NET 
Ruby/RoR 🔨 Testing/QA