Backend Engineer (Java/Kotlin; English)

Top 3 reasons to join us

• Competitive package
• A work-life balance (hybrid model)
• International working environment

Job description

As a Backend Engineer with expertise in Java and/or Kotlin, you design, develop, and maintain scalable, high-performance server-side applications. You collaborate with cross-functional teams in Germany to deliver robust APIs, microservices, and backend systems that power our products.

Key Responsibilities

• Design, develop, and maintain backend services using Java or Kotlin.
• Build RESTful APIs and GraphQL endpoints for web and mobile applications.
• Develop and optimize microservices architecture for scalability and performance.
• Work with relational (PostgreSQL, MySQL) databases.
• Ensure code quality through unit testing, integration testing, and CI/CD pipelines.
• Collaborate with frontend developers, DevOps, and product teams to deliver features.
• Troubleshoot, debug, and resolve production issues in a timely manner.
• Stay updated with emerging trends in Java, Kotlin, and backend technologies.

Your skills and experience

• 4+ years of professional experience in software development using Java and/or Kotlin for backend development.
• Strong experience with Spring Framework (Spring Boot, Spring MVC, Spring Data, Spring Security).
• Experience with RESTful API design, OpenAPI/Swagger, and API security (JWT, OAuth2).
• Familiarity with microservices and Docker.
• Understanding of database design, SQL, and ORM tools (Hibernate, JPA, Exposed for Kotlin).
• Experience with Git, Agile methodologies, and DevOps practices (CI/CD, Jenkins, GitHub Actions).
• Strong problem-solving skills and ability to write clean, maintainable code.
• Fluent English: Excellent written and verbal communication for a global team environment.

Why you'll love working here

• A work-life balance: Hybrid working model, 18 days of annual leave (increasing yearly). 
• Competitive income package: Comprehensive package with full salary insurance, 13th month salary and meal allowance.
• A truly global perspective: develop your international mindset by collaborating daily with colleagues from diverse cultures and backgrounds across the world.
• Real impact: contribute to shaping the future of one of the most user-centric companies in the travel-tech industry. Your ideas and solutions will reach thousands of users globally.
• Learning and development opportunities: access to business travel programs. 
• Protecting and enhancing healthcare plan for you: Premium insurance for employees plus annual health check-ups. 
• Employee's engagement activities: Respectful, engaging culture with annual company trips, year-end celebrations, and team-building activities.