Builds robust backend services and enterprise applications on the JVM ecosystem.

Entry

Intermediate

Coding

Very High

Key skills

Java / JVMSpring BootGit workflowsSQL / JPA

Common progression

  1. Java Developer
  2. Senior Software Engineer

Career overview

The Java Developer designs and builds backend services, enterprise applications and APIs on the JVM. They work with Spring, Jakarta EE, Maven/Gradle and often large transactional systems in banking, telecom or retail. Java remains one of the most employable backend stacks, and the role leads naturally to senior software engineering, technical lead or software architect positions.

Main responsibilities

  • Develop applications in Java and the JVM ecosystem
  • Write, test and review production code
  • Design and document REST APIs
  • Model and query relational databases
  • Write unit and integration tests
  • Refactor legacy code and reduce technical debt
  • Build and maintain CI/CD pipelines
  • Keep technical documentation up to date
  • Mentor junior team members and review their work
  • Prepare and execute change requests in production

Technical skills

Java / JVM92%
Spring Boot88%
SQL / JPA82%
REST API design82%
Unit & integration testing75%
Maven / Gradle80%
Docker68%
Messaging (Kafka)65%
Git workflows85%
Performance tuning70%

Technologies

JavaSpring BootSpring SecurityHibernateJPAMavenGradlePostgreSQLOracleKafkaRedisDockerKubernetesRESTGraphQLGitJUnitMockitoLinux

Education level

Education requirements vary depending on the company, country and experience. Professional experience, certifications and technical skills can sometimes compensate for formal education.

High School / Bac

Less common

Bac+2 (2-year degree)

Less common

Bac+3 (Bachelor)

Common entry point

Bac+5 (Master / Engineering)

Common entry point

Experience & coding level

Experience level

Entry LevelJuniorIntermediateSeniorExpert

Coding level

No codingLowMediumHighVery High
Technical difficulty80%

Useful certifications

Certifications are never mandatory. They are one way among others to prove a skill.

  • Oracle Certified Professional Java SE
  • Spring Professional Certification
  • AWS Developer Associate

Where can this career take you?

Multiple paths are possible. Click a role to open its profile.

Direct progression

Java DeveloperSenior Software Engineer
Where Can Your IT Career Take You?

Where can you go next?

Realistic next career moves, with compatibility and a transition roadmap for each.

Overlap: 69% · Difficulty: Easy

Skills to learn: SQL & data modelling, CI/CD, Security basics

View roadmap

Overlap: 27% · Difficulty: Medium

Skills to learn: Kotlin, Android SDK / Jetpack, Jetpack Compose

View roadmap

Where can you go from here?

A typical progression built from real career relationships. Click any role to open its profile.

  1. Java Developer
  2. Senior Software Engineer
Soft skills
  • Rigour and attention to detail
  • Problem solving
  • Teamwork
  • Analytical thinking
  • Clear communication
  • Sense of ownership

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