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# Core Java Developer

- **Company:** Vallum
- **Location:** London, UK
- **Experience:** Expert
- **Contract:** Temporary contract
- **Skills:** Java (Programming Language), Unit Testing, C Sharp (Programming Language), C++ (Programming Language), Computer Programming, Computer Networks, Software Design Patterns, Linux, Eclipse (Software), Java Platform Standard Edition (J2SE), Object-Oriented Software Development, Software Architecture, Systems Development Life Cycle, Software Engineering, Multithreading, Enterprise Software Applications, Software Application Programming, Reliability of Systems, Integration Tests, Information Technology, Software Coding
- **Published:** August 7, 2026
- **Apply:** https://www.careerboard.com/pt/en/find-jobs-in-United-Kingdom/-D7B00F3E6FEED49A82/

## About the Role

7+ years of proven experience developing applications in Core Java (J2SE)

Experience with enterprise application design tools/frameworks (eg, Eclipse, Ant)

Strong understanding of design patterns, object-oriented programming, and software architecture principles

Hands-on experience with multithreaded programming and networking concepts

Proficiency in software development on Linux platforms

Bachelor's degree in Computer Science, Engineering, or related technical field

Experience or working knowledge of C++ or C# for cross-platform integration

## Description

Develop and maintain enterprise-grade software components in Java, ensuring compliance with coding standards and best practices

Apply strong problem-solving techniques for delivering reliable, scalable solutions under strict deadlines

Participate in software design discussions, requirement analysis, and architectural decisions

Collaborate with business teams, client support, and other stakeholders to clarify requirements and deliver value

Handle Level 3 support for production systems as part of the release life cycle

Adhere to established SDLC methodologies and participate in agile development practices

Write unit tests and integration tests to ensure software reliability and maintainability


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