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# Senior Software Engineer, K4B

- **Company:** KAYAK
- **Location:** Berlin, Germany
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Active Directory, Amadeus CRS, Human Resources Information System (HRIS), PostgreSQL, MySQL, NoSQL, OAuth, Redis, Sabre (Computer System), Security Assertion Markup Language (SAML), Single Sign-On, SQL Databases, User Provisioning Software, Okta, Spring-boot, Information Technology, Workday
- **Published:** October 13, 2026
- **Apply:** https://startup.jobs/senior-software-engineer-k4b-kayak-com-10422854

## About the Role

* Bachelor's degree or higher in Computer Science or related field
 * 6+ 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.