Jobs at KAYAK

Design, build, and operate high-traffic Java backend services for flight search, pricing, booking, and servicing. Lead third-party GDS and airline API integrations, improve reliability and performance, resolve partner issues, make architectural decisions, review code, and mentor engineers. Collaborate with product, QA, and external partners while tracking business and user outcomes. The role is hybrid, requiring at least three days per week in the Kaunas office.

Leads and supports integrated brand marketing campaigns across paid, owned, and earned channels in North America. Partners with creative, PR, performance marketing, product, commercial teams, and agencies to develop campaigns, coordinate media, adapt global messaging, monitor cultural trends, measure brand health, analyze performance, and manage partnerships, sponsorships, influencers, timelines, and budgets.

Develop and execute integrated brand marketing campaigns across paid, owned, and earned channels for KAYAK’s North American market. Partner with creative, PR, performance marketing, product, commercial, and agency teams on campaign briefs, media planning, partnerships, sponsorships, and influencer programs. Monitor trends, measure brand health, analyze campaign performance, and translate metrics into recommendations while coordinating timelines, budgets, and cross-functional execution.

Develop and execute integrated brand marketing campaigns across paid, owned, and earned channels in North America. Partner with creative, PR, performance marketing, product, commercial teams, agencies, and external partners. Support media planning, campaign measurement, brand health research, creative testing, cultural trend monitoring, partnerships, sponsorships, and influencer programs while managing timelines, budgets, and cross-functional coordination.

Leads KAYAK’s Marketing Data Science team, managing data scientists and setting strategy for marketing measurement, experimentation, attribution, incrementality, and analytics. Oversees modeling for SEM, SEO, brand media, paid search, user journeys, and landing pages. Partners with engineering and business teams to build scalable data products, guide budget and channel decisions, maintain statistical rigor, and communicate insights. The role remains hands-on in modeling, analysis, and code review while emphasizing team development and technical leadership.

Build scalable, reliable data pipelines and production-ready datasets supporting machine learning across KAYAK. Partner with data scientists, engineering, and platform teams to translate modeling needs into data requirements, validate and monitor pipelines, resolve reliability issues, identify data gaps, and influence technical roadmaps. The role requires strong data and software engineering foundations, systems thinking, independent ownership, and effective communication.

Leads KAYAK’s Concord data science team, setting technical direction for AdTech, auctions, and the shared experimentation platform. Responsibilities include managing and developing experienced data scientists, guiding modeling and ML solutions, evolving scalable experimentation capabilities, driving production deployments, and partnering with Product, Engineering, and business stakeholders to deliver measurable outcomes.

Design, build, test, and maintain reliable Java software, APIs, and services for KAYAK’s AI-powered travel search and trip-planning products. Responsibilities include debugging production issues, improving performance and observability, participating in code reviews, collaborating with product and design teams, and contributing to AI-assisted features such as conversational planning, smart filters, and hotel review summaries.

Owns hotel search accuracy operations by monitoring results, investigating price, availability, and linking issues, identifying root causes, coordinating resolutions across engineering, marketing, and commercial teams, and documenting processes. The role tracks KPIs, escalates recurring problems, contributes to data quality initiatives, and supports team knowledge-sharing. It requires strong analytical, investigative, communication, prioritization, and collaboration skills, with SQL or comparable data-tool experience.

Develop and maintain Java backend features for KAYAK’s travel search and booking technology. Responsibilities include implementing search and booking functionality, improving performance and user experience, and maintaining integrations with third-party travel APIs. The role requires collaboration with senior engineers and is based in the Kaunas office at least three days per week.

Lead the design, development, and production operation of direct supplier integrations for KAYAK for Business. Build Java backend integrations using SOAP/XML, REST, and proprietary protocols; monitor reliability, troubleshoot partner issues, and manage production rollouts. Collaborate with suppliers, product, QA, and engineering teams, contribute to architecture and technical standards, evaluate business value, and mentor junior and mid-level engineers.

Design, build, and own complex frontend features from technical design through deployment and monitoring. Write tested, maintainable code; lead technical discussions; address technical debt, performance, and reliability; mentor engineers; collaborate with product and design; participate in agile ceremonies; and improve engineering processes and tooling. The role requires JavaScript, TypeScript, a modern component framework, API integration, automated testing, fluent English, and hybrid work from the Kaunas office at least three days weekly.

Administer and maintain NetSuite, Salesforce, FloQast, and Expensify systems, including configurations, permissions, workflows, reports, integrations, and user support. Troubleshoot data synchronization and system issues, support financial close activities, perform sandbox testing and release validation, maintain documentation, and assist with SOX and access reviews. The role partners with Finance, Accounting, Sales Operations, Engineering, and senior systems analysts to implement process changes and support system rollouts.

Administer and support NetSuite, Salesforce, FloQast, and related finance systems. Manage users, permissions, workflows, reports, integrations, support tickets, testing, upgrades, documentation, and access reviews. Troubleshoot data synchronization and system issues, support financial close activities, and collaborate with Finance, Engineering, and senior systems analysts on process changes and system rollouts.

Analyze commercial data across travel verticals to identify trends, performance drivers, and revenue opportunities. Build dashboards, reports, forecasting models, and KPI frameworks; investigate data discrepancies; and collaborate with engineering and business intelligence teams on data quality and technical requirements. Present actionable insights to technical and commercial stakeholders while contributing to analytics projects involving inventory forecasting, partner reporting, and AI-assisted analytics.

Build recommendation systems that help travelers discover and choose travel options. Translate business questions into modeling problems, develop production-ready machine learning solutions, design and evaluate experiments, and collaborate with Data Science, Product, Engineering, and other teams. The role requires communicating technical findings and trade-offs clearly while delivering measurable improvements to user experience and business metrics.

Develop recommendation systems that help travelers discover and choose travel options. Translate product and business questions into modeling problems, build scalable machine learning solutions, design and evaluate experiments, and collaborate with Product, Engineering, and Data Science teams to deploy impactful work. The role requires strong statistics, machine learning, programming, production modeling, analytical judgment, and communication skills. Experience with PyTorch, Polars, Docker, Airflow, Trino, Git, or related tools is advantageous.

Lead a Berlin-based team responsible for KAYAK’s shared machine learning platform. Own the platform strategy, roadmap, architecture, delivery, and operational reliability while remaining hands-on. Build capabilities for training orchestration, model serving, feature management, monitoring, and LLM workflows. Hire, mentor, and develop engineers; collaborate across Data Science, Engineering, and Operations; and drive scalable, reliable production ML adoption.

Leads global supplier relations for KAYAK for Business, managing preferred travel partners across travel management, airlines, rail, lodging, car rental, ground transportation, expense, and payment. Responsibilities include partnership growth, supplier evaluations, contracting, commercial negotiations, relationship management, technology prioritization, customer and internal collaboration, budgeting, forecasting, and revenue reconciliation.

Design, build, and operate scalable backend services for retention, Trips, and CRM systems. Implement high-throughput bulk and transactional messaging (email/push), integrate third-party APIs, lead end-to-end architecture, debug/optimize production systems, collaborate with cross-functional teams, and mentor junior engineers while improving operational monitoring and reliability.