Data Engineer - Central Machine Learning

About Us: At Booking.com, data drives our decisions. Technology is at our core. And innovation is everywhere. But our company is more than datasets, lines of code or A/B tests. We’re the thrill of the first night in a new place. The excitement of the next morning. The friends you encounter. The journeys you take. The sights you see. And the memories you make. Through our products, partners and people, we make it easier for everyone to experience the world. About The Team: Machine Learning, and AI in general, are integral to booking.com's goal of making it easier for everyone to experience the world. Central Machine Learning (CML) powers many of booking's flagship ML capabilities. The CML Core Platform team mission is to develop a shared serving, data and ML infrastructure to all CML platforms and to connect these with other platforms across the company. Role Description: Feature Engineering for facilitating easy, reliable, and fast creation, storage, and retrieval of machine learning features for model training and serving. Ensuring quick integrated solutions by evaluating solutions within Booking ecosystems and from third-party vendors, balancing quick delivery with long-term effectiveness. Scaling for Millions by building with scale in mind as our models serve millions of users daily. Key Job Responsibilities and Duties: As a Data Engineer, you will be in charge of the development, performance, quality, and scaling of our data pipelines, focusing especially on data integrity and quality. You will work independently and will also be responsible for making technical decisions within a team. End-to-end ownership of data integrity and quality in our data pipelines. Providing tools that improve Data Quality company-wide. Providing self-organizing tools that help the analytics community discover data, assess quality, explore usage, and find peers with relevant expertise. Experimenting with new tools and technologies to meet business requirements regarding performance, scaling, and data quality. Rapidly developing next-generation scalable, flexible, and high-performance data pipelines. Solving issues with data and data pipelines, prioritizing based on customer impact. Acting as an intermediary for problems, with both technical and non-technical audiences. Supplying to a high scale, complex, world renowned product and seeing real-time impact of your work on millions of travelers worldwide Promote and drive impactful and innovative engineering solutions. Technical, behavioral and interpersonal competence advancement via on-the-job opportunities, experimental projects, hackathons, conferences, and active community participation Qualifications & Skills: We are looking for driven Data Engineers who enjoy solving problems, who initiate solutions and discussions and who believe that any challenge can be scaled with the right mindset and tools. We have found that people who match the following requirements are the ones who fit us best: You have more than +3 years of professional experience as a Software Developer/Data Engineer and hold a degree in a quantitative field You have hands-on experience with schema design and data modeling and working with ML scientists and ML engineers to provide production level ML solutions. You have experience designing systems E2E and knowledge of basic concepts (lb, db, caching, NoSQL, etc) You have built production data pipelines in the cloud, setting up data-lake and server-less solutions; ‌ Proven knowledge of Python is required, JVM languages will be a plus Knowledge of Snowflake, Hadoop, Hive, MySQL imports, Airflow, Oozie, Spark, CDC, Kafka. Experience with Data Warehousing and ETL/ELT pipelines Experience with ML monitoring and evaluation tools such as DBT. You are excited by handling petabytes of data via Big data technologies. Excellent communication skills - verbal and written Benefits & Perks - Global Impact, Personal Relevance: Booking.com’s Total Rewards Philosophy is not only about compensation but also about benefits. We offer a competitive compensation and benefits package, as well unique-to-Booking.com benefits which include: Annual paid time off and generous paid leave scheme including: parent, grandparent, bereavement, and care leave Hybrid working including flexible working arrangements, and up to 20 days per year working from abroad (home country) Industry leading product discounts - up to 1400 per year - for yourself, including automatic Genius Level 3 status and Booking.com wallet credit Living and working in Amsterdam, one of the most cosmopolitan cities in Europe 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 Opportunity to utilize technical expertise, leadership capabilities and entrepreneurial spirit Promote and drive impactful and innovative engineering solutions Technical, behavioral and interpersonal competence advancement via on-the-job opportunities, experimental projects, hackathons, conferences and active community participation Competitive compensation and benefits package and some great added perks of working in the home city of Booking.com Diversity, Equity and Inclusion (DEI) at Booking.com: Diversity, Equity & Inclusion have been a core part of our company culture since day one. This ongoing journey starts with our very own employees, who represent over 140 nationalities and a wide range of ethnic and social backgrounds, genders and sexual orientations. Take it from our Chief People Officer, Paulo Pisano: “At Booking.com, the diversity of our people doesn’t just build an outstanding workplace, it also creates a better and more inclusive travel experience for everyone. Inclusion is at the heart of everything we do. It’s a place where you can make your mark and have a real impact in travel and tech.” We ensure that colleagues with disabilities are provided the adjustments and tools they need to participate in the job application and interview process, to perform crucial job functions, and to receive other benefits and privileges of employment. Application Process: This section should provide: Let’s go places together: How we Hire This role does not come with relocation assistance. 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. Pre-Employment Screening If your application is successful, your personal data may be used for a pre-employment screening check by a third party as permitted by applicable law. Depending on the vacancy and applicable law, a pre-employment screening may include employment history, education and other information (such as media information) that may be necessary for determining your qualifications and suitability for the position.