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KAYAK Logo KAYAK · IT - Software Development

Java Software Engineer

Germany, Berlin · Job Posted February 18, 2026
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Job Description

We are looking for a strong mid level Java backend developers to implement new features and maintain KAYAK’s world leading search and booking technology. We integrate with over 200 travel partners and link to over 500,000 hotels and 550 airlines. You will be an essential part of a high powered team that keeps all of this running smoothly – helping millions of people find the best hotels and the best ways to fly from A to B every day!

Job Responsibility

  • 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

Requirements

  • Bachelor’s degree or higher in Computer Science or related field
  • 3+ 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

Nice to have

  • 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

What we offer

  • Work from (almost) anywhere for up to 20 days per year
  • Company-paid therapy sessions through SpringHealth
  • Company-paid subscription to HeadSpace
  • Company-wide week off a year
  • No meeting Fridays
  • Paid parental leave
  • Generous paid vacation + time off for your birthday
  • Paid volunteer time
  • Development Dollars
  • Leadership development
  • Access to thousands of on-demand e-learnings
  • Travel Discounts
  • Employee Resource Groups
  • 6 weeks paid vacation
  • Free lunch 2 days per week
  • Pension plan contributions
  • Public transportation subsidies
  • Bike leasing program
  • Monthly social events, Thursday happy hours, sports teams
  • An awesome office in Friedrichshain, Berlin
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