Full-Time
Senior Frontend Software Engineer
KAYAK
1,001-5,000 employees
Travel search engine aggregating flights, hotels
Compensation Overview
$140k - $160k/yr
Cambridge, MA, USA
Hybrid
Requires 3 days on-site per week at Cambridge, MA.
 Software Engineering (1) |
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- 4+ years of meaningful work experience building web applications
- Bachelor's degree or higher, preferably in a quantitative/technical field (e.g. Computer Science, Engineering, Physics, Math)
- Deep experience building layouts using CSS and HTML
- Advanced understanding of JavaScript, ideally with some experience using a modern UI framework or library (we use React, but Angular and Vue.js experience counts)
- Knowledge of performance considerations, especially with respect to browsers
- Experience working in Java, C#, or a similar object-oriented language
- Experience leveraging AI tools (Claude Code, Codex, Cursor or similar) to building high quality software solutions
- Ability to debug issues in a full-stack environment
- Ability to work independently on solutions and designs with minimal oversight
- Ability to produce scalable, high quality, and accurate work
- Ability to estimate effort accurately and execute with pace
- Ability to show good judgment in architecting software
- Ability to use metrics to validate decision-making
- Ability to own communication to key stakeholders on assigned projects
- Ability to easily relate technical subjects to non-technical audiences
- Ability to demonstrate leadership across teams and business functions
- Work on K4B product features used by millions of corporate travelers
- Have end-to-end ownership of the UI, including testing, monitoring and troubleshooting
- Make architectural decisions and build prototypes
- Review and scope feature requests
- Drive technical debt reduction, oversee code quality, and pair with other developers
- Refactor and optimize existing code
- Work with geographically distributed teams
- Leverage modern AI tools & technologies to build excellent user interfaces
KAYAK helps travelers plan trips by comparing prices across flights, hotels, car rentals, and vacation packages from hundreds of providers in one place. Users search for travel options, and the platform pulls listings from many booking sites, showing prices, availability, and deal details so people can compare and choose. It also offers tools like fare alerts and price forecasts to help users make smarter choices and track changes. Revenue comes from advertising and referral fees when users click on deals or book services via KAYAK. Compared with competitors, KAYAK focuses on aggregating a broad set of travel options from numerous sites to create a single, easy-to-use search experience with helpful planning tools, aiming to simplify the process of finding the best deals. Its goal is to save travelers time and money by making travel planning fast, transparent, and convenient.
Company Size
1,001-5,000
Company Stage
Acquired
Total Funding
$2B
Headquarters
Stamford, Connecticut
Founded
2004
Simplify's Take
What believers are saying
- World Cup drives 168% surge in Kansas City flight searches, boosting KAYAK traffic.
- Domestic airfares rise steadily since January 2026, increasing referral commissions.
- Holiday searches up 10% with prices below 2024 levels, enhancing deal promotions.
What critics are saying
- Google AI Overviews divert traffic to Google Flights within 3-6 months.
- Booking Holdings rejects Hafner's $2.1B buyout, eroding KAYAK autonomy in 12-18 months.
- OpenAI agentic travel agent launches June 2026, eliminating KAYAK intermediary role.
What makes KAYAK unique
- KAYAK's AI Mode integrates ChatGPT with real-time flight and hotel data for conversational planning.
- Airfare Trends Dashboard tracks weekly price changes across domestic and international routes.
- Ask AI combines natural language queries with live results from hundreds of travel partners.
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People at KAYAK who can refer or advise you
Benefits
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Flexible Hours and Happier Days
Growth & Insights and Company News
6 month growth
↑ 0%1 year growth
↓ -1%2 year growth
↑ 0%Skyscanner vs Kayak flight comparison: which is better for cheap flights in 2026? Discover more Air Travel Skyscanner and Kayak comparison both help you find cheap flights, but they work differently. Skyscanner is better for discovering low cost routes and budget airline deals, while Kayak is stronger for filtering results, tracking prices, and combining travel options efficiently. Air Travel If your goal is to find the absolute cheapest flight, Skyscanner usually performs better. If your goal is to compare options with more control and fewer surprises, Kayak is often the safer choice. The best results come from using both strategically, not choosing one blindly. Which one should you use. * Use Skyscanner for cheaper routes, budget airlines, flexible travel * Use Kayak for filters, price tracking, and cleaner booking experience Best strategy: use Skyscanner to discover deals, then confirm on Kayak or airline. Key difference between Skyscanner and Kayak. Skyscanner focuses on price discovery across more sources, while Kayak focuses on data filtering and booking clarity. Skyscanner scans more third-party providers, which can show cheaper deals. Kayak focuses on structured results, making it easier to compare without confusion. Skyscanner vs Kayak core comparison. Which platform finds cheaper flights in real cases. Skyscanner often shows lower prices, but those deals may come from third party agents. Travel & Transportation Discover more Hotels & Accommodations Search Engines Kayak shows slightly higher prices but: * More reliable * Less risk of price changes Cheap vs reliable this is the real trade off. At Flightofly, flightofly has seen: * Skyscanner wins for price hunting * Kayak wins for safe booking decisions When Skyscanner is the better choice. Use Skyscanner when: * You want the lowest possible price * You are flexible with dates or destinations * You are okay checking multiple providers The Everywhere search gives unique low cost opportunities. When Kayak is the better choice. Use Kayak when: * You want better filters (time, stops, baggage) * You need price tracking * You prefer stable pricing Kayak reduces booking confusion, especially for beginners. Travel Agencies & Services Biggest mistake travellers make (costs money). Most people: * Book from the first result * Ignore third party risks * Don't compare platforms Result: they overpay or face hidden fees. Before booking, understand why flight prices change daily so you don't make timing mistakes. Decision based comparison. Step by step: how to find the cheapest flight (working method). * Search on Skyscanner Find lowest available routes * Check same flight on Kayak Compare filters and pricing * Verify on airline website Avoid hidden charges * Check airline baggage policies and packing tips * before booking to prevent extra costs * Book when price stabilises This method reduces cost and risk together. Hidden pricing patterns most travellers ignore. Flight prices depend on: * Demand spikes * Search frequency * Time before departure Most travellers overpay because they book based on urgency, not strategy. Use best time to book flights instead of guessing. Instead, follow best time to book cheap flights to maximise savings. When NOT to book early (critical insight). Booking too early can: * Lock higher prices * Miss discounts Better approach: * Monitor prices * Wait for dips Air Travel Common issues with Skyscanner. * Price changes after click * Third-party booking risks * Limited filter control Always double check final price before payment. Common issues with Kayak. * Misses some budget airline deals * Prices slightly higher than aggregators But safer overall. How Flightofly helps you make smarter decisions. Flightofly is built to help you: * Apply cheap flight booking tips effectively * Understand flight cancellation policies * Learn how to find cheap flights without guesswork flightofly simplify decisions so you don't overpay. Travel Agencies & Services Pro strategy (what experienced travellers do). Experts don't rely on one platform. * Use Skyscanner for discovery * Use Kayak for filtering * Cross-check airlines This layered approach consistently saves money. Internal strategy links. * Use cheap flight booking tips before booking * Check airline baggage rules to avoid fees * Learn how to find cheap flights properly * Understand flight cancellation policies before payment Final verdict. Skyscanner and Kayak are not equal tools, and treating them the same is where most travellers go wrong. Skyscanner is built for finding the lowest possible prices, often by pulling deals from multiple third-party sources. Kayak, on the other hand, is designed to give you cleaner comparisons, better filters, and more reliable booking paths. So the real question is not which is better overall, but which is better for your specific situation. If your priority is saving the most money, start with Skyscanner to uncover cheaper routes and deals. Then use Kayak to validate those options, compare details, and reduce risk before booking. This combined approach gives you both price advantage and booking confidence. Travellers who rely on just one platform usually either overpay or face hidden issues, while those who use both strategically get the best results. FAQs. Which is cheaper, Skyscanner or Kayak? Skyscanner often shows cheaper deals, but Kayak provides more stable and reliable pricing. Is Kayak more reliable than Skyscanner? Yes, Kayak has better filtering and fewer third-party risks. Why do Skyscanner prices change? Because many listings come from third-party agents with dynamic pricing. Should I book from Kayak or airline? Booking directly from airlines is safer and avoids hidden fees. How to get the best deal using both platforms? Search on Skyscanner, compare on Kayak, then verify with the airline before booking. Jameel is a travel content writer at Flightofly with 5 years of experience, specialising in cheap flight strategies, airline rules, and booking insights. His content is based on research and real-world travel trends to help readers avoid costly mistakes and make smarter booking decisions. Air Travel Add a comment. Your email address will not be published.
KAYAK has launched an Airfare Trends Dashboard providing weekly insights into flight price changes using its search data. Updated every Tuesday, the tool tracks week-over-week and year-over-year airfare trends across domestic and international destinations, helping travelers understand how factors like seasonality and fuel costs affect pricing. The dashboard shows domestic airfares have risen steadily since January 2026 with consistent increases and minimal volatility. International prices are following similar patterns to 2025, indicating familiar seasonal demand shifts. Some destinations, including Hilo, Palermo and Georgetown, have seen prices drop as much as 18%. KAYAK has also updated its Trip Calculator with current gas prices and airfare data to help travellers compare flying versus driving costs.
Kayak's ad campaign amid AI competition: marketing challenges. Photo Credit: A screengrab from a Kayak First Millennial ad. Kayak/Youtube Comprehensive Summarization: Kayak has launched a new ad campaign featuring two 30-second spots, "First Millennial" and "Momfluencer," showcasing travelers researching and booking trips via their cellphones. The central message of the campaign is that Kayak can help users cut through the clutter, reduce stress, and ensure they get a good deal. However, the campaign notably lacks any direct reference to AI and large language models like Google Gemini or ChatGPT. This raises questions about how travel companies and marketers should adapt their strategies in light of the rapid changes in travel search technology. A Skift survey is referenced, indicating ongoing interest in the topic. Key Points: * Kayak's new ad campaign features "First Millennial" and "Momfluencer" spots highlighting the ease of researching and booking trips via cellphones. * The campaign emphasizes the benefits of using Kayak to cut through clutter, reduce stress, and ensure good deals. * The campaign does not mention AI or large language models, prompting questions about the role of these technologies in travel search. * A Skift survey is mentioned, suggesting ongoing interest and discussion around the topic. Actionable Takeaways: * Adaptation to AI Integration: Travel companies should consider integrating AI and large language models into their marketing strategies to stay competitive. This could involve leveraging AI for personalized travel recommendations, enhancing customer service through chatbots, or using natural language processing for more intuitive search functionalities. This aligns with the industry trend of adopting AI to improve user experience and operational efficiency. * Focus on User Experience: The campaign's emphasis on ease of use and stress reduction suggests that travel companies should prioritize user experience in their digital platforms. This includes optimizing mobile interfaces, simplifying booking processes, and providing transparent pricing information. Enhancing user experience can lead to higher customer satisfaction and loyalty, which are crucial in a competitive market. * Monitoring Market Trends: Travel marketers should stay informed about emerging trends in travel search technology, such as AI-driven personalization and voice-activated search. Keeping abreast of these trends can help companies anticipate customer needs and adapt their offerings accordingly, ensuring they remain relevant in a rapidly evolving market. Contextual Insights: The article's context highlights the ongoing transformation in travel search technology, with AI and large language models emerging as key players. While Kayak's current campaign does not explicitly reference these technologies, the absence underscores the need for travel companies to consider how AI can enhance their offerings. The Skift survey referenced in the article indicates a growing interest in this area, suggesting that the industry is moving towards more sophisticated, AI-integrated solutions. This forward-looking perspective is crucial for travel startups and fintech innovators, who can leverage these technologies to create more personalized, efficient, and user-friendly travel experiences. As the travel industry continues to evolve, staying ahead of technological advancements will be essential for maintaining a competitive edge. Stay ahead with travel trade today - AI news that matters. Get curated travel AI insights - choose the newsletters that matter to you. Choose your newsletters: Join thousands of travel leaders. Unsubscribe anytime.
Kayak co-founder and CEO Steve Hafner explored taking the travel search company private approximately 18 to 24 months ago, but the proposal was rejected by Booking Holdings CEO Glenn Fogel, according to two industry sources. Hafner had secured private equity backing for the deal. Booking Holdings acquired Kayak in 2013 for $2.1 billion and also owns Booking.com, Priceline, Agoda and OpenTable. Fogel reportedly vetoed the buyout due to strategic considerations and concerns about losing Hafner's broader contributions to the parent company. Both Hafner and a Booking Holdings spokesperson declined to comment on the matter. Hafner has led Kayak for over two decades.
Kayak launches AI Mode for smarter trip planning. Travel search engine Kayak has introduced a new feature called AI Mode that allows users to research trips and book flights, hotels, and rental cars through artificial intelligence. Available on both desktop and mobile web, the AI chatbot leverages ChatGPT to provide personalized travel recommendations and real-time information. This launch builds on Kayak's earlier experimentation with AI. In April 2025, the company introduced Kayak.ai, a platform that combined Kayak's travel data with OpenAI technology. That platform served as a testing ground for AI-powered travel solutions, giving Kayak's tech team the ability to experiment with AI features before integrating them into the main website. AI Mode now brings these capabilities directly to Kayak.com, allowing users to plan trips efficiently without leaving the site. How AI Mode Works The AI Mode feature allows users to ask natural-language questions about travel. For example, travelers can request recommendations for destinations under a certain budget, compare hotel amenities, find nonstop flights, or locate rental car options. The chatbot can also answer more open-ended questions such as "Where should I go for New Year's Eve?" or "When is the cheapest time to visit London?" The AI generates contextual answers using Kayak's travel data, making planning trips more convenient and interactive. Kayak emphasizes that AI Mode is particularly helpful in the early stages of travel planning. It enables users to explore new ideas, evaluate multiple options, and identify opportunities they might not have considered otherwise. By providing instant, data-driven recommendations, the feature can save time and reduce the frustration often associated with booking trips manually. While AI Mode is designed to offer convenience, Kayak ensures that user data is handled securely. The feature only uses information relevant to travel planning and does not access unrelated personal data. This focus on privacy is part of Kayak's broader approach to providing a safe and useful AI experience. AI Mode is currently available in English in the United States. Kayak plans to expand the feature to additional countries and languages later in the month. The company also intends to introduce voice-based interactions in the near future, allowing travelers to ask questions verbally instead of typing. This will make trip planning even more seamless for users who prefer hands-free assistance. AI is becoming increasingly prominent in the travel industry. Companies like Expedia and Booking.com, which is also owned by Booking Holdings, have integrated AI to provide interactive planning experiences inside ChatGPT. These tools allow travelers to access booking and planning services within conversational AI platforms. By hosting AI Mode directly on its website, Kayak gains direct access to user behavior and preferences. This data allows the company to refine its tools and improve recommendations over time. Unlike other providers that rely on third-party AI platforms, Kayak can offer a fully integrated experience while learning how travelers interact with AI in real-time. Why AI Matters for Travel Planning Booking travel can be complex and time-consuming, especially for trips that involve multiple destinations, accommodations, and transportation options. AI Mode simplifies this process by combining Kayak's extensive travel data with advanced AI technology. Users can ask questions, compare options, and make bookings all in one place. The new feature represents a significant step in making AI a practical part of everyday travel planning. It demonstrates how AI can help consumers make informed decisions quickly while exploring options they might not have discovered on their own. Kayak's AI Mode illustrates the growing intersection of artificial intelligence and travel. By providing interactive, real-time guidance, the company is helping travelers save time and make smarter decisions. The launch also positions Kayak to compete effectively with other AI-driven travel tools while maintaining control over its user experience and insights. AI Mode is now live on Kayak for desktop and mobile users in the United States, and the company has ambitious plans to expand it globally. With the integration of AI directly into its platform, Kayak aims to transform how people plan trips, making the process more interactive, personalized, and efficient. This move highlights the potential of artificial intelligence to improve travel discovery and booking experiences for millions of users worldwide.