Data Scientist

About the company

We are Stayforlong, and for us travel is not just a means to an end but a journey of extraordinary moments and remarkable discoveries.

As firm believers in the enriching power of prolonged stays, we are passionate about nurturing meaningful connections with the places our customers visit. We reward their commitment to the journey with progressively cheaper rates, encouraging them to immerse themselves in the very essence of each destination.

We were born in Barcelona out of the need to disrupt an industry dominated by big corporations dictating how we should travel.

Since 2015, our commitment has been to empower our customers to break free from the constraints of an oversaturated market. We strive to offer a fresh perspective, giving them, hoteliers and our partners, the flexibility, opportunities and choices they deserve.

About the team

At Stayforlong we are currently a team of 80 people working in a dynamic and collaborative environment where people have the opportunity to grow and develop professionally.

We strongly believe in equal opportunities for everyone, both in the workplace and beyond. We like to create spaces where everyone's ideas are equally valued and heard.

We started in a difficult business environment and have grown from there, which is why we admire nonconformists who fight against the odds, refuse to be intimidated, and help others along the way. With our digital DNA, we thrive on challenges, love to think outside the box, and move with the times.

Would you like to join us?

Job purpose :

We are seeking an autonomous Data Scientist to join our data team to build and test production-ready machine learning models that optimize our marketing operations. You'll focus on developing bidding automation algorithms and revenue optimization solutions.

This role offers the opportunity to shape our data science practices while solving complex optimization challenges that can have a high impact on Stayforlong's business performance.

Main job responsibilities are :

Build and deploy in production predictive and prescriptive models

Continuously evaluate our algorithms : From offline to online experiments

Stay up to date with the latest developments in Machine Learning technologies and Data Science trends

Mentor junior team members and help define Stayforlong data science / MLOps best practices

Your first project : Bidding optimisation, help us optimize our bids in GHA

What you will bring :

Degree in a quantitative field (Mathematics, Statistics, Computer Science, Engineering or other quantitative fields).

2+ years experience as Data Scientist or ML engineer

Proven experience building end to end predictive models. from problem definition to productionalization and maintenance. This includes :

Strong data modeling and SQL skills.

Familiarity with orchestration tools (Airflow, Luigi, Dagster)

Experience using frameworks like Spark, Tensorflow and the already classic libraries like scikit-learn, pandas, etc.

Experience evaluating your algorithms

Production ML experience with cloud platforms.

Nice to have :

Understanding of digital marketing concepts.

Experience working with bidding automation algorithms.

Experience with Applied AI Tools : Demonstrated comfort using coding assistants.

AI Experimentation Mindset : Curiosity and eagerness to explore, experiment with, and integrate emerging AI-driven solutions.

What We Offer

Hybrid model based in Barcelona.

Permanent contract, full-time.

Flexible hours.

Competitive remuneration + flexible benefits package.