Communication protocols / Integration

REST

SOAP

WebRTC

JMS

STOMP

Kafka

XMPP
Computing clouds

AWS

Azure

DigitalOcean

GCP

OVHCloud

Linode

Vultr
Frontend

Vue.js

React.js

Nuxt.js

Next.js

Redux

HTML5

CSS3

Angular
Database

PostgreSQL

Oracle

MS SQL Server

MySQL

MariaDB

MongoDB

Redis

Memcached

Cassandra

Lucene

Elasticsearch

Neo4j

Blazegraph
Deploy

Docker

Kubernetes

Helm

Rancher

Terraform

OpenStack

OpenShift
Programming languages

Java

Groovy

JavaScript

TypeScript

Python

SQL

Bash

Kotlin

R

C#
Ecosystems

Java/JVM

Spring Boot

Node.js

.NET Core
Service integrations

Przelewy24

Mailgun

Prismic

Orlen

ZUS

ING / Payvision PSP

Ctoutvert (Channel Manager)

Sequisoft (Channel Manager)

McRent (Rental Company)

JustSend

JotForm

Mandrill
e-commerce

WordPress

Shopify

MediaWiki
Blockchain/DLT

Quantum Ledger DB

Ethereum

CORDA
CI/CD

Maven

Gradle

GitLab CI

Jenkins

Ansible

JUnit

Spock