Senior Software Engineer, K4B

KAYAK
Berlin Office, Germany
Hybrid

Who this role is best for

Strong fit for Java backend developers with experience in travel domain integration who can work in a hybrid office setting.

Best fit for

  • Java developers with 6+ years of experience and a background in travel technology systems
    — “6+ years of experience in JAVA”
  • Candidates who have implemented integrations with airline and hotel APIs in prior roles
    — “Build and maintain high-performance integrations with third-party APIs (airlines, hotel and rentalcars providers)”
  • Individuals with a track record of taking ownership of complex engineering initiatives
    — “Take full ownership of your designs: from initial concept to deployment”

Things to consider

  • Must be available to work in the Berlin office at least three days per week
    — “In this role you will be expected to work from our Berlin office at least 3 days per week.”
  • Prior experience in B2B systems or identity/HR integrations is a plus but not mandatory
    — “Experience with B2B systems or identity/HR integrations is beneficial”

How to stand out

  • Highlight experience with high-performance API integrations and modular design in your resume
    — “Build and maintain high-performance integrations with third-party APIs”
  • Emphasize your ability to design and implement initiatives independently
    — “Ability to design and implement engineering initiatives with minimal guidance”
  • Showcase any prior work with GDS systems or travel booking platforms
    — “familiarity with airline distribution and standards (GDS such as Amadeus/Sabre/Travelport, NDC)”
Pace · SteadyCollaboration · HighAutonomy · HighDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • optimize search and booking logic
  • build and maintain high-performance integrations with third-party APIs
  • take full ownership of designs from initial concept to deployment
  • participate in code reviews and architectural steering
Typical background
Bachelor’s degree or higher in Computer Science or related field6+ years of experience in JAVA

Skills & requirements

Required

Java Backend DevelopmentSpring Ecosystem (spring/spring Boot)Relational (sql) And Nosql Databases (postgresql, Mysql, Redis)Ability To Design And Implement Engineering Initiatives With Minimal GuidanceExperience With B2B Systems Or Identity/hr Integrations

Preferred

Familiarity With Airline Distribution And Standards (GDS Such As Amadeus/sabre/travelport, NDC) And Their Integration With Booking/reservation Systems

Stack & domain

JavaSpring EcosystemSpring/spring BootRelational DatabasesSQLNosql DatabasesPostgreSQLMySQLRedisTravel DomainAirline DistributionStandardsGDSAmadeusSabreTravelportNDCBooking/reservation SystemsB2B SystemsIdentity/hr IntegrationsSCIMSaml/oauthSSOUser Provisioning/deprovisioningHris/idp PlatformsWorkdayOktaActive DirectoryCommunicationDesigningImplementing Engineering InitiativesMinimal GuidanceTravelSoftware Engineering

About the role

Original posting from KAYAK via Ashby

KAYAK, part of Booking Holdings (NASDAQ: BKNG), is the world's leading travel search engine. With billions of queries across our platforms, we help people find their perfect flight, stay, rental car and vacation package. We're also transforming business travel with a new corporate travel solution, KAYAK for Business.

As an employee of KAYAK, you will be part of a travel company that operates a portfolio of global metasearch brands including momondo, Cheapflights and HotelsCombined, among others. From start-up to industry leader, innovation is at our core and every employee has an opportunity to make their mark. Our focus is on building the best travel search engine to make it easier for everyone to experience the world.

We are looking for a strong Java backend developer 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!

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
  • 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.

BENEFITS AND PERKS:

  • 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
  • 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 + a day off for your birthday
  • 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

INCLUSION

At KAYAK, we want everyone to have the space to grow, share ideas and do great work. That’s why we’re focused on hiring the best talent from all walks of life and experiences, supporting them well and making sure no one feels like they have to fit a mold to belong here.

Need any adjustments for the interview, application or on the job? No problem - just give us a heads-up. We’ve got you.

#LI-AS1

Source: KAYAK careers (Ashby)

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