technology stack
Java
Groovy
Java Script
C/C++
Java (for Android)
Python
Spring Framework 4.x &5x
Spring Security
Spring WebMVC, REST, SOAP-WS, etc.
Spring Boot
Spring Integration
Hibernate 5
Spring Data
Simple JDBC, Spring JDBC-template, etc.
Flyway
Liquibase
DB-persistence, ORM, data management/migration tools & frameworks
PostgreSQL
Oracle
MongoDB
Redis
MySQL
Thymeleaf 3
Velocity
Freemarker
Template engines, document generators & converters
Distributed streams/IMDG/Message Brokers
Apache Tomcat
Nginx
Jetty
Apache Http server
Application Containers, Servers
Docker
Docker-compose
Kubernetes
Cops
Virtualization & Containers
Atlassian Jira
Atlassian Bitbucket
Task management, Continuous Integration & Delivery systems, Source code controlCVS
Google Cloud
Amazon AWS (EC2, RDS, SQS, Route53, VPC)
Digital Ocean
Groovy
Selenium 3.14
Jenkins
Automation Tools' Frameworks
TensorFlow
YOLO
Keras
Caffe
STL (including C++11)
Boost
Qt
OpenCV
Dlib
Caffe/Fast-RCNN/py-Faster-RCNN
Darknet
JUnit, Spock
Jmeter, Datadog
Selenium
Testcontainers
Postman 5.5.3
Confluence
Jira bug-tracking system
Frontend tools/frameworks
JavaScript, ES6, ES7
Webpack, BabelJS
Typescript
Node
npm/yarn
ReactJS and its ecosystem (React-router, Redux, Redux-thunk etc.)
VueJs and its ecosystem (Vuex, Vue-router)
JQuery / Ajax / JSON / REST
CSS3/Less/Sass - Gulp/Grunt
Popular Frameworks (Bootstrap, Foundation, Bulma)
UX / Usability
Accessibility / WAI-ARIA
SEO