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Online Travel, E-commerce, Software, Big Data

Senior JAVA Software Engineer

KaunasHybridFull TimeStaffPosted 1 month ago

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Required skills

  • Java
  • Spring Framework
  • Spring Boot
  • Spring Security
  • PostgreSQL
  • MySQL
  • Redis
  • B2B Integration
  • SAML
  • OAuth2

Nice to have

  • AI
  • LLM

Role summary

KAYAK, a leading travel search engine and part of Booking Holdings, is seeking a Staff Software Engineer for its KAYAK for Business (K4B) global engineering team in Vilnius. This role will shape the technical direction of backend systems, focusing on designing scalable solutions for AI-driven booking experiences and enterprise client integrations. The engineer will lead design for high-performance integration frameworks, provide technical leadership to squads, and drive improvements in the engineering lifecycle, including observability and CI/CD. The position requires 7+ years of experience with Java and Spring Framework, expertise in PostgreSQL, MySQL, and Redis, and knowledge of B2B integration patterns. Experience with AI/LLM is a plus. The role requires working from the Vilnius office at least 3 days per week.

KAYAK, part of Booking Holdings (NASDAQ: BKNG), is a 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 in our DNA 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 strong 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!

 

This role will be required to work from our Kaunas office at least 3 days per week.

 

In this role, you will:

  • Implement new backend search and booking features under the guidance of senior engineers.

  • Collaborate with the team to improve existing features, focusing on speed and user experience.

  • Assist in creating and maintaining integrations with third-party APIs.

 

Please apply if you have:

  • Education in Computer Science or a related field.

  • 4+ years of experience working with Java.

  • Familiarity with Spring framework and SQL databases.

  • Fluent English communication skills.

  • A willingness to learn and grow in a collaborative environment.

  • Ability to thrive in a hybrid working model, working at least three office days per week.

Bonus Skills:

  • Exposure to ElasticSearch or similar search technologies.

 

Compensation:

Software Engineer salary consists of three elements:

Base pay: from 3330 EUR up to 6660 EUR gross monthly.In addition:

  • Significant yearly bonuses, approx 10 percent of annual salary.

  • Booking Holdings RSU (Restricted Stock Units) package, worth 20000 USD gross, with possibility to receive yearly refreshes.

 

Benefits:

  • Work from (almost) anywhere for up to 20 days per year

  • Funds for your career growth

  • Access to thousands of on-demand e-learnings

  • Generous additional Health Insurance

  • Flexible sick time off

  • Additional financial support for your sick leave

  • Additional day off on your birthday

  • Company-wide vacation week once a year (winter holidays)

  • Additional financial support during parental leave

  • Free lunch twice a week and daily snacks at the office

  • Free yoga twice a week

  • Paid volunteering time

  • No meeting Fridays

  • Office and team events such as summer camp, KAYAK birthday, winter party and more!

  • Company-paid therapy sessions through SpringHealth

  • Company-paid subscription to HeadSpace

  • Internal Communities

 

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.If you need accommodations during the application or interview process, or on the job, we’re here to support you. Please reach out to your recruiter to request any accommodations.

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