Java/J2EE (Core Java, Servlets, JSP, EJB)

Spring Framework (Spring Boot, Spring MVC, Spring Data, Spring Security)

Hibernate/JPA for ORM

RESTful Web Services and SOAP

SQL and relational databases (MySQL, PostgreSQL, Oracle)

Maven/Gradle build tools

Git version control

JUnit and testing frameworks

Apache Tomcat or similar application servers

XML and JSON processing

Multithreading and concurrent programming

Design patterns and SOLID principles

Web services and API development

Logging frameworks (Log4j, SLF4j)

Strong communication and interpersonal skills

Team collaboration and ability to work in cross-functional teams

Problem-solving and analytical thinking

Attention to detail and commitment to code quality

Ability to mentor and guide junior developers

Time management and ability to meet deadlines

Adaptability to changing requirements and technologies

Initiative and self-motivation

Documentation and knowledge sharing abilities

Customer-focused mindset