Software Engineer

KAYAK

. Design, implement and maintain reliable production software for KAYAK’s travel-search and trip-planning experiences .

Posted 10/22/2026full-timeKaunas • LithuaniaMid-LevelSenior💰 €2,700 - €3,990 per monthWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building and maintaining production software, with a strong focus on APIs, AI applications, and automated testing. Proficient in collaborating with cross-functional teams to enhance user experiences and improve software reliability.

Highest-signal resume keywords

Java ProgrammingAPI DevelopmentAutomated TestingAI ApplicationsDistributed Systems

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Production Software DevelopmentSoftware TestingData StructuresSoftware Design PrinciplesSpring FrameworkRelational DatabasesCloud ServicesCI/CD PipelinesMachine LearningHigh-Volume Consumer Products

Soft Skills

Good Communication SkillsOwnership of WorkTechnical Decision Explanation

Industry Keywords

Travel-Related ProductsUser ExperienceAccessibilityReliabilityUsability

Tech Stack

Tools & technologies

CloudDistributed SystemsJavaSpring

About the role

Key responsibilities & impact

Design, implement and maintain reliable production software for KAYAK’s travel-search and trip-planning experiences
Build and evolve APIs and services supporting AI-assisted search, conversational travel planning, itineraries and related user experiences
Investigate technical problems, assess trade-offs and choose practical solutions that improve reliability, performance and maintainability
Write automated tests and contribute to quality across unit, integration and end-to-end testing
Participate in code reviews and technical discussions, providing constructive feedback focused on correctness, clarity and maintainability
Work with engineers, product managers and designers to clarify requirements and deliver useful, accessible user experiences
Contribute to features such as ASK AI, smart filters, AI-generated hotel review summaries, Explore and related search experiences
Help make AI-assisted features dependable, transparent and useful to travelers
Learn unfamiliar systems and share knowledge with teammates through documentation, pairing and technical discussions
Monitor and improve production behavior through effective debugging, observability and root-cause analysis
Contribute to the evolution of development tools, engineering processes and delivery practices

Requirements

What you’ll need

Experience building and maintaining production software
Proficiency in Java or another relevant programming language
Familiarity with APIs, data structures and software-design principles
Experience testing software and investigating defects or production issues
Ability to explain technical decisions clearly in writing and conversation
Ability to take ownership of assigned work while asking for input or support when needed
Experience contributing to projects from design through implementation, release and maintenance
Equivalent practical experience is welcome in place of a specific degree or educational path
Good communication skills in English
Experience with distributed systems, search, personalization or other high-volume consumer products
Experience with AI, machine learning or large language model applications
Experience with relational databases or other structured data stores
Experience working on web products, mobile products or travel-related products
Experience improving accessibility, reliability or usability
Experience working with Spring
Experience with cloud services, CI/CD pipelines and automated testing frameworks
Ability to commute to the Kaunas office 3 times a week
CV must be submitted in English

Benefits

Comp & perks

Significant yearly bonuses, approx 10 percent of annual salary
Booking Holdings RSU (Restricted Stock Units) package, worth 20,000 USD gross, with possibility to receive yearly refreshes
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