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Originele vacaturetekst

Senior Backend Developer - AdTech

Job Description is the largest online travel agency in the world! We serve hundreds of millions of users through our platform in 43 languages and offer more than 28 million reported accommodation listings.

At, data drives our decisions. We maintain peta bytes of data including but not limited to; customer information, reservations, accommodation information, accommodation availability, destination information, etc

​​Marketing Technology is at our core so that is why we are constantly evolving and adapting our systems to be able to work with the best technology out there. Working in our team you will be exposed to; Perl, Java, MySql, Cassandra, Kafka, Kubernetes, Hadoop, BigQuery, Elastic Search. You will not only get the chance to utilise these technologies to solve the problems on hand in a scalable and reliable way but you will also be contributing to our goal to “make it easier for everyone to experience the world”


As a Senior Backend Developer, you will be responsible for the development, performance, and scaling of our public website as well as internal systems. You will work independently and will also be responsible for making technical decisions within a team.

Important aspects of the job include:

  • Rapidly developing next-generation scalable, flexible, and high-performance systems
  • Influencers with a collaborative, proactive attitude, driving innovation within the team
  • Advocating development best practices within the team/track.
  • Driving a culture of ownership and technical excellence, leading by example
  • You have driven successful technical, business and people related initiatives that improved productivity, performance and quality
  • You own your systems end-to-end and are comfortable performing incident management
  • Solving issues with the site and internal systems, prioritizing based on customer impact
  • Advocate a collaborative working environment - make “my ideas” into “our ideas”
  • Identify, foster, and proactively help colleagues to grow professionally, taking a significant role in on-boarding new team members
  • Contributing to the growth of through interviewing, on-boarding, or other recruitment efforts

We have found that highly motivated developers who match the following requirements are the ones who fit us best:

  • You are a humble and thought leader, you lead by example and gain your teammates respect through your actions and not your title
  • 7+ years software development experience; using 2 or more server side programming languages like Java/Python/Perl
  • Previous experience with distributed systems
  • Experience with MySQL, Cassandra, BigQuery or similar RDBMS/NoSQL solutions
  • Experience with batch processing pipelines with focus on data integrity and resilience
  • Experience with defining and upholding SLOs/KPIs and leading architecture reviews for systems.
  • Experience with unit, integration and end-to-end testing paradigms
  • Self-starter, highly motivated, team-player
  • You are an excellent communicator and you are able to influence and cooperate with people at all levels
  • You have a ‘can do’ attitude and you act proactively and not reactively
  • Preferably a university degree in Mathematics or Software Engineering


  • Experience with A/B testing
  • Building microservices
  • Knowledge of BigData solutions & cloud (GCP/AWS/Azure)
  • You have an intrinsic curiosity in technological innovations and you are always on top of the latest trends.
  • Headquarters located in one of the most dynamic cities in Europe: Amsterdam
  • Performance-based company that offers 29 vacation days, career advancement, and lucrative compensation, including bonuses and stock potential
  • Discount on accommodations with the “Booking Deal” including other perks and benefits
  • Technical, behavioural and interpersonal competence advancement via on-the-job opportunities, experimental projects, hackathons, conferences and active community participation
  • Company-sponsored family and social activities to help our employees become integrated with each other and Dutch culture
  • Diverse and creative colleagues from every corner of the world
  • Generous relocation package, ensuring a smooth transition to working and living in Amsterdam 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, colour, 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.

fulltime, parttime
Type vacature:


  • Er is geen minimale opleiding vereist

Wat wij bieden

Parttime - Fulltime