Application Security Engineer at Booking Holdings Romania (DC-0035)

Booking.com’s Application Security team is seeking a passionate engineer who wants to protect the world’s largest travel platform against attacks to its application stack. Your skills will be the foundation of security initiatives that protect the security and privacy of all our customers.

The Application Security team maintains the signals, tools, and infrastructure that we use to secure Booking.com products and defines the secure coding practices for all our developers. As part of this team, you will be building advanced and novel detection mechanisms, developing systems to automate remediation, performing security indicator analysis and advise product teams on how to keep customers data safe.

Role Responsibilities

  • As an application security subject matter expert, you will provide security guidance on a constant stream of new products and technologies used at Booking.com
  • Build and tune detection mechanisms and automated response tooling
  • Improve Booking.com’s Software Development Lifecycle
  • Conduct security assessments and code reviews
  • Analyze, assess, and respond to application security threats


  • B.S. or M.S. Computer Science or related field, or equivalent experience
  • Coding experience for tooling development and security code review (bonus points for Java, Perl, JavaScript, Python orGo.
  • Extensive knowledge of web security issues and/or mobile security issues
  • Expertise in analysis of large data sets.
  • Knowledge of Software Development Lifecycle (SDLC) with emphasis on security integration and activities.(eg. SAST, DAST, Threat Modeling, security testing).
  • Excellent communication abilities. Fluent in English, both spoken and written.
  • Strong team player with a commitment to group success.

Benefits package:

  • Contributing to a high scale, complex, world renowned product and seeing real-time impact of your work on millions of travelers worldwide
  • Working in a fast-paced and performance driven culture
  • Technical, behavioral and interpersonal competence advancement via on-the-job opportunities, experimental projects, hackathons, conferences and active community participation
  • Competitive compensation and benefits package 
  • Vast amounts of data to validate your ideas and the opportunity to experiment with real users.

Booking.com is proud to be an equal opportunity workplace and is an affirmative action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. We strive to move well beyond traditional equal opportunity and work to create an environment that allows everyone to thrive.

About Booking Holdings Romania:

Booking Holdings Romania is a Center of Excellence based in Bucharest, Romania and was created to support the increasing business demands of the Booking Holdings Brands. The Center of Excellence provides access to specialized and highly skilled talent, leading industry best practices, and collaboration opportunities across all of our Brands.

As part of our Booking Holdings Romania team, you will have the opportunity to be a part of the world’s leading provider of online travel, with a mission of making it easier for everyone to experience the world through six-primary consumer facing brands: Booking.com, Priceline, Agoda, KAYAK, OpenTable and Rentalcars.com.

We believe that the passion and talent of our employees is our strength – it is what drives us towards outstanding performance. We offer a dynamic, motivating and sophisticated work environment. A culture that is open, innovative and performance-oriented. Our scale and scope, commitment to people and high standards of integrity make Booking.com a great place to work.

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Orange Romania is part of the Orange Group, one of the largest global telecommunications operators that connects hundreds of millions of customers worldwide. With over 11 million local customers and an annual turnover exceeding 1.5 billion euros, Orange Romania connects 1 in 2 Romanians and offers an extensive range of communication solutions for both individual and corporate customers, from basic connectivity services to complete mobile, fixed internet, TV packages, and complex IT&C solutions through Orange Business

Orange Romania is the number 1 operator in terms of network performance, and also holds nine consecutive Top Employer certifications, which confirm that Orange Romania, in addition to the remarkable products and services it offers, pays special attention to its employees and working environment. In the past 3 years Orange has launched two 5G Labs in Bucharest and Iasi, that aim to support researchers, startups and companies to test their 5G solutions in advance. 

In addition, Orange is a long-term supporter of the startup ecosystem through the Orange Fab accelerator program designed to support entrepreneurs in the development of innovative products and their distribution locally and internationally.

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