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.
Security at KAYAK is a team effort — we protect the people, systems, and data that power travel for millions of users worldwide, and we do it by working closely with engineering, operations, and product teams. As a Security Engineer , you will help to drive our vulnerability management program while contributing across multiple security domains in a collaborative, globally distributed environment. You can find more information about our security program at https://www.kayak.com/security .
This role is required to work from our Berlin, Germany office 3 days per week.
In this role, you will:
Support and continuously improve the vulnerability management program — defining processes for identifying, prioritizing, tracking, and driving remediation of security findings across infrastructure and applications. This includes working closely with engineering, operations, and IT teams to ensure findings are understood, assigned, and resolved in a timely manner, and reporting on program health and trends to security leadership.
Participate in incident response activities, including triage, investigation, containment, and post-incident documentation.
Support application security initiatives, including automated code scanning, dependency analysis, and working with engineering teams to address security findings early in the development process.
Help configure, monitor, and improve security tooling across areas such as endpoint protection, email security, identity and access management, and cloud security posture.
Contribute to security automation and orchestration workflows that reduce manual effort and improve response times.
Collaborate with engineering, operations, and compliance teams to embed security thinking into development workflows and infrastructure changes.
Document processes, runbooks, and findings to support team knowledge sharing and continuity.
Participate in access reviews and support identity and access management processes in line with established policies.
Stay current with the evolving threat landscape and contribute ideas for improving the team's detection and response capabilities.
Please apply if you have:
A solid understanding of cybersecurity fundamentals — including networking, operating systems (Linux, macOS, or Windows), and cloud environments — gained through any combination of formal education, self-study, bootcamps, or professional experience.
Hands-on experience in at least one security domain, such as vulnerability management, incident response, application security, endpoint security, or identity and access management.
Experience working with security tooling (e.g., vulnerability scanners, endpoint detection and response platforms, SIEM systems, or similar); familiarity with specific tools is a plus, but willingness to learn our stack matters more than exact tool experience.
Familiarity with AI tools and how they can be applied in a security context — whether for automating workflows, triaging alerts, or improving detection and response. Experience working with AI models or building AI-assisted workflows is a plus.
The ability to communicate clearly in writing and in conversation — our team is globally distributed and works primarily in English (professional working proficiency is sufficient; native fluency is not required).
A collaborative approach to problem-solving — you ask questions, share what you learn, and support your teammates.
Comfort working with some degree of autonomy on assigned tasks and projects, while knowing when to ask for input.
Bonus points if you have:
Familiarity with the NIST Cybersecurity Framework or similar security frameworks.
Experience with cloud environments (AWS or GCP) or container security.
Exposure to security automation or scripting (e.g., Python, workflow automation tools).
Experience working in a regulated environment (e.g., SOC 2, PCI).
Benefits and Perks
Work from (almost) anywhere for up to 20 days per year
Focus on mental health and well-being:
Company-paid therapy sessions through SpringHealth
Company-paid subscription to HeadSpace
Company-wide week off a year - the whole team fully recharges (and returns without a pile-up of work!)
No meeting Fridays
Paid parental leave
Generous paid vacation + time off for your birthday
Paid volunteer time
Focus on your career growth:
Development Dollars
Leadership development
Access to thousands of on-demand e-learnings
Travel Discounts
Employee Resource Groups
6 weeks paid vacation
Free lunch 2 days per week
Pension plan contributions
Public transportation subsidies
Bike leasing program
Monthly social events, Thursday happy hours, sports teams
An awesome office in Friedrichshain, Berlin
Inclusion
At KAYAK, we want everyone to have the space to grow, share ideas and do great work. That’s why we’re focused on hiring the best talent from all walks of life and experiences, supporting them well and making sure no one feels like they have to fit a mold to belong here.
Need any adjustments for the interview, application or on the job? No problem - just give us a heads-up. We’ve got you.
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