Spring Framework - MVC, Dependency Injection, Spring Hibernate, Spring Data JPA, Spring Boot and Spring Cloud for Microservices Architecture.

Core Java - OOP Concepts, Garbage Collection, Multi-threading, Collections Framework, Java 8 Features, Lambda Functions, Streams.

Interview - Product Companies, eCommerce Companies, Investment Banking, Healthcare Industry, Service Companies and Startups.

Dev Ops Automation - Ubuntu OS, Centos, MySql, MongoDB, Java, AWS Infrastructure.

No SQL design and development - Amazon DynamoDB, MongoDB, MySQL document DB.

IDE and Tools - IntelliJ IDEA, Gradle, Maven, Git, Draw.io, MySQL, RabbitMQ

Microservices Architecture and its implementation using Spring Framework

SDET Java Interview pattern and collection of questions covering SDET coding challenges, automation testing concepts, functional, api, integration, performance and security testing, junit5, testng, jmeter, selenium and rest assured

Android and iOS/Swift Programming Tutorials, Interview questions and recipes.

Misc IT integration topics - Payment Gateways, SMS gateways, Email Servers, Hosting Solutions etc.

Data science, machine learning, python, R, big data, spark, the Jupyter notebook, and much more

AWS related services - EC2, SQS, Lambda functions, CodeDeploy, Cloudformation, Amazon DynamoDB, Amazon S3, API Gateway