Java Software Engineer

Key Responsibilities

Minimum N3 level proficiency in Japanese to facilitate communication with stakeholders

Front-End Development

Collaborate with UX / UI designers to translate design mockups into functional user experiences.

Optimize front-end components for maximum performance across browsers and devices.

Write unit and integration tests using Jest to ensure robust and maintainable UI components.

Back-End Development

Design, develop, and maintain server-side logic using Spring Boot and Java 21 .

Build reusable and scalable modules, APIs, and libraries.

Implement security, authentication , and data protection best practices.

Database Management

Design and manage database schemas for MSSQL and PostgreSQL .

Write efficient SQL queries , stored procedures , and triggers .

Optimize database performance and ensure data integrity and consistency.

Integration

Integrate front-end and back-end components for seamless data flow and user interaction.

Work with RESTful APIs and integrate third-party services where needed.

Testing and Debugging

Develop unit and integration tests for back-end using Mockito .

Perform code reviews , identify performance bottlenecks, and debug issues effectively.

Ensure code reliability, stability, and adherence to coding standards.

Collaboration

Work closely with product managers, designers, and developers in an Agile / Scrum environment.

Participate in sprint planning , daily stand-ups , reviews , and retrospectives .

Provide technical guidance and mentorship to team members.

Continuous Improvement

Stay current with emerging technologies and industry best practices .

Continuously improve coding standards, performance, and deployment processes

Qualifications

Education :

Bachelor’s degree in computer science, Information Technology , or a related discipline.

Experience :

Minimum 8+ years of experience in full stack development .

Technical Skills

Front-End : React JS, JavaScript (ES6+), HTML5, CSS3, Jest

Back-End : Spring Boot, Java 21, RESTful APIs

Databases : MSSQL, PostgreSQL

Testing Frameworks : Jest, Mockito

Version Control : Git / GitHub / GitLab

Build Tools : Maven, Gradle

Security : OAuth2, JWT, Spring Security

Soft Skills

Strong analytical and problem-solving capabilities.

Excellent communication and collaboration skills.

Ability to work effectively in a fast-paced , agile , and dynamic environment.

Preferred Qualifications

Experience with cloud platforms (AWS, Azure, GCP).

Knowledge of containerization (Docker) and orchestration (Kubernetes).

Familiarity with CI / CD pipelines (Jenkins, GitHub Actions, GitLab CI).

Experience with message queues (RabbitMQ, Kafka).

Mandatory Skills

Java, Spring Boot, Japanese Language Expert