(Senior) Machine Learning Engineer (m/w/d)

Permanent employee, Full-time · Bottighofen, Munich, Poznań, Warsaw

What awaits you at HolidayCheck
Do you want to help us redefine the online travel business? At HolidayCheck, our vision is to make vacations better. We leverage data and technology to create real value for our customers looking for their dream vacation. Within our data lake we process billions of offers every day, we run hundreds of jobs to fuel reports and dashboards that drive our decision-making and product features. We work on exciting features such as review fraud detection, hotel/offer recommendations, customer segmentation, hotel list ranking, NLP review information extraction, sentiment analysis etc. 
  
If you are a skilled machine learning engineer, come and help our outstanding team in Munich, DE, in Bottighofen, CH, in Poznan, PL. 
 
Your tasks 
  • Interact closely with other data scientists and become a valuable part of our data intelligence team 
  • Develop and implement machine learning models to optimize recommendation systems for personalized travel suggestions 
  • Evaluate and fine-tune existing models to enhance performance, considering factors like accuracy, business value and model complexity  
  • Stay updated on the latest advancements in machine learning and apply relevant techniques to improve model capabilities 
  • Conduct A/B tests to assess the impact of model changes on user engagement and conversion rates. 
  • Work on feature engineering and selection to enhance model input, considering both structured and unstructured data 
  • Collaborate with data engineers to ensure seamless integration of machine learning models into the platform's infrastructure 
  • Implement and maintain scalable and efficient machine learning pipelines for continuous model training and deployment 
  • Collaborate with product teams to understand business requirements and translate them into machine learning tasks and objectives 
 
What we are offering you - Our "All inclusive Package"
  • 20-day Workation: Pack your laptop and enjoy 20 days per year in breathtaking locations within the EU. Beaches, mountains, or vibrant metropolises - the choice is yours!
  • 60/40 hybrid model: With our 60/40 hybrid model, you can flexibly combine remote work and office presence. Organise your working week according to your preferences and meet your colleagues on our 2 office days per week for brainstorming sessions, table tennis battles or inspiring conversations!
  • Diverse company culture: Experience a world trip within a single company. With over 30 nationalities in our team, we celebrate a vibrant and inclusive company culture. You can expect a melting pot of ideas, perspectives, and traditions that will broaden your horizons.
  • Onboarding program: From newbie to champion - we accompany you on your "Roundtrip" through HolidayCheck and ensure that you feel at home from the very beginning. Get ready to hit the ground running!
  • Flexible working hours: Work-life balance matters to us. Enjoy flexible working hours that fit your lifestyle, allowing you to excel in both your personal and professional endeavors.
  • Free parking or public transportation subsidy: You can choose whether to park your car in your personal free parking space or benefit from a subsidy for public transportation in Munich.
  • Family-friendly: We understand the challenges of balancing work and family. That's why we offer a Kita (childcare) subsidy to ensure your little ones are well taken care of while you follow your passion at work.
  • Training budget: It's no coincidence that one of our company values is #better. We invest in your growth! Take advantage of our individual training budget and a comprehensive range of training opportunities, empowering you to develop new skills and unleash your full potential!
  • Celebrate Milestones: With our anniversary vouchers, we celebrate your long-term commitment and show our appreciation with additional vacation days or a monetary contribution towards your next dream vacation.
  • Tech freedom: At our company, you determine how you work! You have the freedom to choose your own hardware, whether it's a MacBook, a Windows laptop, or Linux. Unleash your creativity with the right hardware.
  • Fitness and culinary delights: We care about your well-being! Our exclusive fitness discounts and free yoga classes at the office help you to stay active and healthy . In our subsidized canteen in Munich and with our amazing chef Evelyn in Bottighofen, you can expect delicious and healthy meals. A treat for body and mind!
What you need to succeed
  • Proficient in programming languages (primarily Python), with hands-on experience in machine learning libraries/frameworks like Scikit-Learn or XGBoost, experience with TensorFlow or PyTorch is a plus 
  • Proven track record in developing and deploying machine learning models as APIs in a production environment (eg. FastAPI or else Flask) 
  • Experience in A/B testing methodologies to assess and validate the impact of machine learning model changes 
  • Familiarity with MLOps best practices and frameworks (such as MLFlow) 
  • Solid understanding of statistical modeling, machine learning algorithms, and their applications in real-world scenarios 
  • Knowledge of data preprocessing, feature engineering, and data visualization techniques, particularly in the context of travel-related data 
  • Ability to work with large-scale datasets and distributed computing frameworks for efficient model training and inference 
  • Collaborative mindset and effective communication skills for working with cross-functional teams and translating business requirements into machine learning tasks. 
  • Continuous learning and adaptability to stay abreast of the latest advancements in machine learning and artificial intelligence. 
  • Strong problem-solving skills and the ability to analyze complex systems to derive actionable insights for model improvement. 
  • You are a pragmatic team player that enjoys collaborating with others. You are interested in pair programming, sharing knowledge, and learning from each other.  
  • You are fluent in English. 

Our team 
  • Our team operationalizes data for our customers and internal stakeholders. Some of our projects are: hotel recommendations, deals/offer selection, hotel reviews information extraction, customer segmentation etc. 
  • We are an international team at multiple locations across Central Europe. 
  • Our main programming language is Python. 
  • We occasionally publish some of our work on our HolidayCheck techblog: https://techblog.holidaycheck.com/category/machine-learning/ 

What does your hiring journey look like?  


Are you ready to join the HolidayCheck adventure? Then grab your suitcase full of talents and send us your application! Show us who you are, what drives you, and why you're excited to make vacations better together with us.

About us
Do you want to be part of the next generation of holidays? In a constant changing environment, HolidayCheck wants to be there when the Urlaubers look again for their greatest time of the year. We want to bring them back to the beach!
At the heart of our corporate culture are our values. We live by them every day! They have helped us create an environment of continuous personal growth and trust, where HolidayCheckers can work autonomously and with a lot of flexibility, in small, self-organised teams. We improve ourselves daily, listen carefully to our customers and deliver working software to them frequently.
Do you also share our values and are you ready for the journey with HolidayCheck? Then become part of our team!
Your application
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