Hybrid Senior JAVA Software Engineer – Fixed term

at KAYAK

• Job title: Senior JAVA Software Engineer – Fixed term
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: Java, MySQL, NoSQL, Postgres, Redis, Spring, Spring Boot, SpringBoot, SQL
• Location requirements: Hybrid, Berlin, Germany

About the role

• Java backend developer optimizing KAYAK’s booking technology. Integrating with travel partners and maintaining system performance as part of a high-powered team.

Responsibilities

• 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