KAYAK

Senior JAVA Software Engineer – Fixed term

KAYAK

full-time

Posted on:

Location Type: Hybrid

Location: Berlin • Germany

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Job Level

Senior

Tech Stack

JavaMySQLNoSQLPostgresRedisSpringSpring BootSpringBootSQL

About the role

  • 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
  • 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.
Benefits
  • Work from (almost) anywhere for up to 20 days per year
  • Focus on mental health and well-being:
  • Company-paid therapy sessions through SpringHealth
  • Company-paid subscription to HeadSpace
  • Company-wide week off a year - the whole team fully recharges (and returns without a pile-up of work!)
  • No meeting Fridays
  • Paid parental leave
  • Generous paid vacation + time off for your birthday
  • Paid volunteer time
  • Focus on your career growth:
  • 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
Applicant Tracking System Keywords

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Hard Skills & Tools
JAVASpringSpring BootSQLNoSQLPostgreSQLMySQLRedisAPI integrationcode quality
Soft Skills
strong English communicationdesign and implement engineering initiativesminimal guidance