Senior JAVA Software Engineer

In this role you will be expected to work from our Berlin office at least 3 days per week

In this role you will

• Optimize search and booking logic to handle the demands of greatest global corporate clients
• Build and maintain high-performance integrations with third-party APIs (airlines, hotel and rentalcars providers)
• Take full ownership of your designs: from initial concept to deployment while maintaining high standards for code quality and performance
• Participate in code reviews and architectural steering to ensure the K4B project remains modular and reusable as KAYAK expands its enterprise footprint

Please apply if you have

• Bachelor’s degree or higher in Computer Science or related field
• 5+ years of experience in JAVA
• Hands-on experience with the Spring ecosystem (Spring/Spring Boot) and working knowledge of relational (SQL) and NoSQL databases (e.g., PostgreSQL, MySQL, Redis).
• Strong English communication skills
• Ability to design and implement engineering initiatives with minimal guidance
• Prior experience in the travel domain is beneficial — familiarity with airline distribution and standards (GDS such as Amadeus/Sabre/Travelport, NDC) and their integration with booking/reservation systems.
• Experience with B2B systems or identity/HR integrations is beneficial — e.g., SCIM, SAML/OAuth, SSO, user provisioning/deprovisioning, and connecting HRIS/IDP platforms (Workday, Okta, Active Directory) to product services.