Senior Data Scientist (Look-2-Book)

Emerging Travel Group; Portugal; Híbrido; EUR 55 000 - 90 000; Tempo integral

Vantagens oferecidas por esta oferta de emprego

Flexible schedule

Remote or hybrid options

Training programs & growth support

Language learning support

Corporate hotel discounts

MyTime Day Off

Resumo da oferta

Emerging Travel Group is seeking a Data Scientist/ML Engineer to own end-to-end ML projects from hypothesis to measurable business impact. You will collaborate with data engineers to build robust production pipelines and with analysts to define metrics and run A/B tests.

The role focuses on travel/B2B problems, including look-to-book scoring and multi-objective optimization. Responsibilities include modeling, validation, and deploying production-grade ML solutions, with a strong emphasis on

Qualificações

• 4+ years hands-on experience as a Data Scientist or ML Engineer.
• Ability to translate business objectives into ML tasks rather than tuning metrics in a vacuum.
• Solid knowledge of classic Machine Learning algorithms (Gradient Boosting, Classification, Regression).
• Experience with entity matching and recommender/ranking approaches (KNN, FAISS, Learning-to-Rank).
• SQL proficiency and experience building data pipelines with PySpark.
• Production-ready Python code, testing, and deployment to production environments (Airflow/microservices).

Responsabilidades

• Lead ML projects from hypothesis to measurable business impact and production readiness.
• Collaborate with data engineers to build robust data pipelines and with analysts to define metrics and A/B tests.
• Translate complex travel/B2B problems into ML tasks and design models for look-to-book and pricing optimization.
• Develop, train, and validate ML models to test product hypotheses and improve the B2B user experience.

Conhecimentos

End-to-end ML ownership

Cross-functional collaboration

Domain-specific problem solving

Model development

Big data stack

Engineering independence

Ferramentas

PySpark

Airflow

Python

CatBoost

LightGBM

Descrição da oferta de emprego

• End-to-End ML Ownership: Lead ML projects from formulating hypotheses and task setting to delivering measurable business impact. You will be responsible for the entire cycle, ensuring fast time-to-market and maintaining model quality in production
• Cross-functional Collaboration: Work closely with Data Engineers to build robust production data pipelines, and with Data Analysts to dive into business context, define metrics, and design/evaluate A/B tests
• Domain-Specific Problem Solving: Translate complex travel/B2B business problems into mathematical and ML modeling tasks. Key challenges include: Look-to-Book Optimization: Design and deploy scoring models to accurately predict the probability of a search query converting into a booking (look-to-book), model how this likelihood changes dynamically with price and availability, and optimize the entire search-to-book funnel / Multi-objective Optimization: Simultaneous optimization of margin/profitability and operational incident minimization; sophisticated trade-off recommendations factoring in B2B client preferences / Cache Freshness Prediction: Predict the likelihood of rates/offers becoming stale before booking, helping find the right balance between data accuracy, speed, and system load
• Model Development: Develop, train, and validate machine learning models to test product hypotheses and proactively improve the B2B user experience

• End-to-End ML Ownership: Lead ML projects from formulating hypotheses and task setting to delivering measurable business impact. You will be responsible for the entire cycle, ensuring fast time-to-market and maintaining model quality in production
• Cross-functional Collaboration: Work closely with Data Engineers to build robust production data pipelines, and with Data Analysts to dive into business context, define metrics, and design/evaluate A/B tests
• Domain-Specific Problem Solving: Translate complex travel/B2B business problems into mathematical and ML modeling tasks. Key challenges include: Look-to-Book Optimization: Design and deploy scoring models to accurately predict the probability of a search query converting into a booking (look-to-book), model how this likelihood changes dynamically with price and availability, and optimize the entire search-to-book funnel / Multi-objective Optimization: Simultaneous optimization of margin/profitability and operational incident minimization; sophisticated trade-off recommendations factoring in B2B client preferences / Cache Freshness Prediction: Predict the likelihood of rates/offers becoming stale before booking, helping find the right balance between data accuracy, speed, and system load
• Model Development: Develop, train, and validate machine learning models to test product hypotheses and proactively improve the B2B user experience

Requirements

• Experience: At least 4+ years of hands-on experience as a Data Scientist or ML Engineer
• Business Mindset: Ability to dig into data, identify root business problems, and translate business objectives into clear ML tasks rather than just tuning metrics in a vacuum
• ML Stack & Algorithms: Solid knowledge of classic Machine Learning (Gradient Boosting like CatBoost/LightGBM, Classification, Regression)
• Matching, RecSys & Ranking: Proven experience with entity matching tasks, and a deep understanding of Recommendation Systems and Ranking approaches (KNN, FAISS, Learning-to-Rank, pointwise / pairwise / listwise approaches)
• Big Data Stack: Confident experience working with massive datasets (we process terabytes daily). Excellent SQL skills and practical experience building pipelines with PySpark
• Engineering Independence: Production-quality Python code, ability to write tests, and readiness to bring models to production (experience with Airflow and Python microservices)

Nice to Have

• Industry Experience: Experience in TravelTech, E-commerce, or B2B APIs (understanding of hotels, rates, distributors)
• NLP & Embeddings: Basic NLP skills, understanding the principles of text embeddings and how to train them (highly useful for matching textual rate descriptions, room types, and cancellation policies)
• Optimization & Pricing: Experience with dynamic pricing, multi-objective optimization, or Next Best Action (NBA) systems
• Math & Stats: A solid foundation in probability theory and mathematical statistics for rigorous experiment design and model evaluation

Benefits

• A fully flexible work schedule — there's no pressure to start work at exactly 9:00 AM; what matters is achieving results and moving forward;
• Each person in our team is encouraged to choose their preferred work format. You can work fully remotely, come to the office, or choose a hybrid work model;
• We are an ambitious and supportive team who love what they do, appreciate each other, and grow together;
• The growth and development of each employee is our priority, so we have internal programs available for adaptation and training, development of soft skills and leadership abilities that are tailored individually to each employee;
• We also provide partial compensation for employees participating in external training and conferences;
• In tourism, it's difficult to grow without an excellent knowledge of English, and we support our employees' language learning goals — we organize group and individual lessons, plus speaking clubs with colleagues from all over the world;
• And, of course, to encourage you to travel more, we offer corporate prices on hotels and other travel services;
• We prioritize well-being and are committed to supporting the overall health and work-life balance at ETG. As part of this commitment, we provide MyTime Day Off - an extra day off that is designed to give our employees the flexibility to focus on important matters, whether it's taking care of their health, mental recharge, addressing personal issues, or any other important activities

Learn more about our data protection practices in our Privacy Policy: https://www.emergingtravel.com/career/hr-policy/