KAYAK is the world's leading travel search engine, part of Booking Holdings, operating a portfolio of global metasearch brands.

KAYAK, a Booking Holdings company (NASDAQ: BKNG), is the world's leading travel search engine. We operate a portfolio of global metasearch brands including momondo, Cheapflights, and HotelsCombined. Our mission is to build the best travel search engine, making it easier for everyone to experience the world.

As a Senior Android Engineer at KAYAK, you'll be at the forefront of innovation, developing and maintaining large-scale, consumer-facing mobile applications. You'll architect innovative features, maintain high code quality standards, collaborate across teams, and write thorough tests to ensure product excellence.

Key responsibilities include:
- Architecting and developing innovative features
- Maintaining high standards for code, features, and products
- Cross-team collaboration to improve products and technologies
- Writing comprehensive tests for code and product quality

We're looking for candidates with:
- 5+ years of experience in large-scale, consumer-facing mobile applications
- Expertise in Java, Kotlin, Jetpack Compose, and Android Framework
- Strong English communication skills
- Proficiency in scalable application infrastructure
- Strong analytical, debugging, and problem-solving skills
- Understanding of UX best practices
- Ability to create simple solutions for complex problems
- Experience with high-quality unit, UI, and integration tests
- Capability to thrive in a hybrid working model

KAYAK offers an attractive benefits package, including flexible working hours, generous healthcare insurance, career development funds, and unique perks like a company-wide week off and no-meeting Fridays. The compensation package includes a competitive base salary, significant yearly bonuses, and Booking Holdings RSU package.

Join KAYAK to be part of a diverse, inclusive workplace that values innovation and allows you to make your mark in the travel industry.

Senior Android Engineer at KAYAK: Develop innovative features for the world's leading travel search engine.

Senior Android Engineer

KAYAK is the world's leading travel search engine, part of Booking Holdings, helping people find their perfect flight, stay, rental car, cruise, or vacation package.

KAYAK, a Booking Holdings company, is the world's leading travel search engine revolutionizing the travel industry. We're seeking Java backend developers to enhance our cutting-edge search and booking technology. As part of our Flights team, you'll develop, maintain, and optimize backend systems, implement new search integrations, and collaborate with cross-functional teams to deliver high-performance, user-friendly experiences. You'll work with a vast network of travel partners, connecting millions of travelers to the best flights, hotels, and rental cars daily.

We offer a dynamic work environment with a hybrid model, requiring at least 3 days per week in our Concord office. You'll be part of a global network including OpenTable and KAYAK's portfolio of metasearch brands, benefiting from shared strengths and insights across the group.

Key responsibilities include:
- Developing and maintaining backend systems using Java
- Implementing new search integrations with third-party APIs
- Optimizing existing features for high performance
- Writing clean, maintainable, and efficient code
- Troubleshooting, debugging, and performance optimization
- Ensuring system quality and scalability

We're looking for candidates with:
- Proven experience as a backend Software Engineer
- Strong proficiency in Java and in-depth knowledge of data structures, concurrency, and OOP patterns
- Experience with API design and implementation
- Hands-on experience with SQL, HTTP, XML, JSON
- Ability to work independently in a fast-paced environment
- Bachelor's degree or higher in Computer Science or related field

Bonus skills include experience with Spring, MySQL, Git, Redis, or Kafka, and knowledge of cloud platforms (AWS).

At KAYAK, we offer excellent benefits including 4 weeks paid vacation, flexible work locations, generous retirement plans, comprehensive health insurance, and a variety of perks like weekly catered lunches and regular events. We're committed to fostering a diverse and inclusive workplace that reflects the communities we serve.

Join us at KAYAK and help shape the future of travel while working with cutting-edge technology in a collaborative, innovative environment.

KAYAK seeks Java backend developer for Flights team to enhance travel search technology, offering hybrid work and excellent benefits.

Java Backend Developer

KAYAK is the world's leading travel search engine, helping people find their perfect flight, stay, rental car, cruise, or vacation package.

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, cruise, or vacation package. We're also transforming the in-travel experience with our app and new accommodation software.

KAYAK is looking for Java backend developers to help improve and maintain our world-leading search and booking technology! We integrate with over 200 travel partners and link to over 500,000 hotels, 550 airlines, and 1000 rental car companies. You will be an essential part of a high-powered team that keeps all of this running efficiently – helping millions of people find the best hotels and rental cars and the best ways to fly from A to B every day!

In this role, you will:
- Implement new backend search and booking features for Hotel Search Team
- Improve existing features with an eye towards speed and user experience
- Build and maintain existing integrations with third-party APIs

Requirements:
- A proven software engineer with backend experience
- Strong knowledge of Java and its data structure, concurrency and OOP patterns, and API design
- Comfortable in a fast-paced startup environment
- Hands-on and self-motivated
- Bachelor's degree or higher in Computer Science or related field
- Experience with high performance and scalable Java implementation
- Experience with SQL, HTTP, XML, JSON
- Solid experience working on APIs
- Bonus Points: Spring, MySQL, Git, Redis, Kafka

Benefits and Perks:
- 4 weeks paid vacation
- Ability to work from almost anywhere
- Day off on your birthday
- Generous retirement plans
- Awesome health, dental and vision insurance plans
- Flexible Spending Accounts
- Headspace Subscription
- No Meeting Fridays
- Drinks, coffee, snacks, games etc.
- Weekly catered lunches
- Flexible hours
- Regular events/excursions
- Universal Paid Parental leave

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

Join us at KAYAK and help shape the future of travel!

KAYAK is seeking a Java Search Engineer to develop and maintain world-leading travel search and booking technology.

Java Search Engineer

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, cruise, or vacation package.

KAYAK is seeking a skilled Java software engineer to join our Affiliates Integrations team. We have a wide range of products targeted for our affiliates, ranging from deep links and search widgets to APIs. All of these products are powered by the same search engines that provide search results for millions of KAYAK's users. The Affiliate Integration team is responsible for maintaining and improving these products, handling and supporting existing and new integrations.

Responsibilities:
- Build new features and products for our affiliates
- Maintain and enhance existing APIs
- Collaborate with cross-functional teams to ensure seamless integration
- Support existing affiliate integrations

Requirements:
- Strong knowledge of Java, OOP patterns and API design
- Demonstrated passion for writing clean code and commitment to quality and unit testing
- Experience with Spring, JUnit, SQL, HTTP and JSON
- Fluent English communication skills

Benefits and Perks:
- Flexible working hours
- Flexible sick leave
- Fund for career growth and development
- Day off on your birthday
- Additionally paid parental leave
- Generous healthcare insurance
- Free lunch twice a week
- Free Yoga classes twice a week
- Headspace subscription - to relax after work
- No meetings Fridays
- The greatest team events and excursions
- Drinks, coffee, snacks, games etc

Compensation:
Engineer's salary consists of three parts:
- Base part: when joining us early in your career your salary may start from 1679 EUR Gross. Being more experienced, your base salary may be up to 3992 EUR Gross for this position.
- Significant yearly bonus approx 10 percent annual salary
- Booking Holdings RSU (Restricted Stock Units) package, worth 20,000 USD (before taxes) with possibility to get it every year.

KAYAK is committed to diversity and inclusion, welcoming candidates from all backgrounds and experiences. We provide reasonable accommodations for individuals with disabilities throughout the application and employment process.

KAYAK is hiring a Java Software Engineer to join their Affiliates Integrations team, working on products for affiliates including deep links, search widgets, and APIs.

Java Software Engineer

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, cruise, or vacation package. We're also transforming the in-travel experience with our app and new accommodation software.

As an employee of KAYAK, you will be part of a global network that includes OpenTable and KAYAK's portfolio of metasearch brands including Swoodoo, checkfelix, momondo, Cheapflights, Mundi and HotelsCombined. Many employees are dedicated to one brand, but we all have the benefit of using each others strengths and insights. Together, we're able to help people experience the world through dining and travel.

We are looking for Java developers to help improve and maintain KAYAK's big data framework! We maintain high quality data for our Hotel, Flights, Cars, and Vacations verticals as well as deliver content to our SEO and SEM teams. We have millions of hotel property records and images from over a hundred different partners that power our world leading hotel search. You will be an essential part of a high powered team that keeps all of this running smoothly.

Are you passionate about travel and building outstanding user experiences? Then join us at KAYAK and help shape the future of travel! Please note, this role is required to work from our Concord, MA office at least 3 days per week.

In this role, you will:
- Integrating with partner web services and data feeds to acquire content
- Directly communicating with travel partners on technical issues related to their static data APIs, etc.
- Backend Development of KAYAK Hotel & Geographic data content with focus on efficiency, scalability, and automation in regards to day-to-day efforts
- Identifying and resolving complex software problems related to the KAYAK data content
- Utilize and develop against several different types of data storage systems that support the KAYAK content, including but not limited to MySQL, Redis, proprietary KAYAK storage systems.

Please apply if you have:
- Bachelors degree or higher in Computer Science or related field and/or 3+ years professional experience
- Passion for clean code, love for quality and unit testing
- Strong understanding of Object Oriented Programming
- Experience in the following: Java (JDK 8), Spring, SQL, HTTP, XML, JSON, MySQL, Git, Tomcat, JUnit, Mockito
- Working in a semi-micro service environment

Benefits and Perks:
- 4 weeks paid vacation
- Ability to work from almost anywhere
- Day off on your birthday
- Generous retirement plans
- Awesome health, dental and vision insurance plans
- Flexible Spending Accounts
- Headspace Subscription
- No Meeting Fridays
- Drinks, coffee, snacks, games etc.
- Weekly catered lunches
- Flexible hours
- Regular team events/excursions
- Universal Paid Parental leave

Join KAYAK and be part of a diverse and inclusive workplace that values creativity, innovation, and collaboration.

KAYAK is seeking a Java Engineer to improve and maintain their big data framework, working with hotel, flight, car, and vacation data.

Java Engineer

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, cruise, or vacation package. We're also transforming the in-travel experience with our app and new accommodation software.

As a Senior Front-End Engineer on the Cars Team at KAYAK, you will play a crucial role in developing new features for our main site - mostly working on Cars search related pages, but implementing features on other verticals and cross-site as well. You will have the opportunity to work on projects that will be used by millions of travelers worldwide.

In this role, you will:
- Develop and maintain core UI components using React, JavaScript, CSS, and HTML
- Collaborate with the design and product teams to implement intuitive user interfaces
- Optimize front-end performance and ensure consistency across platforms
- Contribute to defining best practices and standards for UI development

Requirements:
- 5+ years of experience in visual web application development
- Proficiency in React, JavaScript, CSS, and HTML
- Strong problem-solving skills in front-end development
- Ability to translate design concepts into functional UI elements
- Excellent communication skills in English

Benefits and Perks:
- Flexible working hours
- Flexible sick time off
- Day off on your birthday
- Additionally paid parental leave
- Generous healthcare insurance
- Free lunch twice a week
- Free Yoga classes twice a week
- Headspace subscription - to relax after work
- No meetings Fridays
- The greatest team events
- Drinks, coffee, snacks, games etc.

Compensation:
Base salary: 3260 EUR - 5760 EUR Gross
Yearly bonuses: Approximately 10% of annual salary
Booking Holdings RSU package: Worth 20,000 USD (before taxes) with possibility to get it every year

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

Senior Front-End Software Engineer for KAYAK's Cars Team, developing features for travel search engine using React, JavaScript, CSS, and HTML.

KAYAK Engineering Jobs

KAYAK is the world's leading travel search engine, part of Booking Holdings, operating a portfolio of global metasearch brands.