Software Engineer, Ads (Backend)

KAYAK·Cambridge Office·Remote·Posted 8 October 2026

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About the role

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. In this role you will: - Design and build backend features, from scoping through deployment and ongoing production support, with guidance from senior engineers and tech leads on more complex or ambiguous problems - Take part in technical design reviews and architecture discussions, asking good questions and contributing ideas - Write well-tested, readable, and maintainable code consistent with team quality standards; participate actively in code reviews, both…

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