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Selected role

Senior Data Scientist

Longtail Technologies Barcelona, CT, ES

Senior Full-time

About Longtail Technologies

Longtail is building an intelligent decision-streaming platform that helps airlines make smarter decisions in real time. By combining automation, proprietary algorithms, and live travel data, we enable airlines to optimize pricing, availability, and product flexibility across thousands of routes worldwide. We're a fast-growing team solving complex, real-world problems at global scale. If you enjoy uncovering insights from large datasets and building systems that influence real strategic decisions, you’ll feel at home here.

About the Role

We are looking for a Senior Data Scientist to lead the development of our elasticity intelligence capabilities. This is a high-impact, greenfield role within our new Synergy Products squad, with a strong focus on data discovery — exploring newly acquired travel datasets to uncover patterns that shape how we understand demand elasticity. You will work at the intersection of data discovery, statistical modeling, and product strategy, identifying where elasticity insights can drive the most value for airlines.

This is an individual contributor role with significant ownership and autonomy from day one, working closely with product and engineering teams to turn analytical discoveries into product impact.

What You’ll Build

You will design and deliver:

Exploratory analytical frameworks that uncover elasticity patterns across travel datasets
End-to-end elasticity models grounded in strong statistical methodology
Robust evaluation frameworks to validate model assumptions
Production-ready model architectures with data engineering
Clear analytical insights that inform product and pricing strategy

What Success Looks Like

Within your first three months, you will have delivered:

A clear exploratory analysis of key travel datasets identifying the most promising areas for elasticity modeling
A defensible view of elasticity across priority datasets
A validated modeling framework with documented assumptions and robustness checks
A proposal for production deployment of elasticity models
Alignment with the product roadmap
Strong cross-functional collaboration with product, engineering, and data teams

What You’ll Do

Your work will span both data discovery and model development, including:

Exploring large-scale travel datasets to identify patterns and opportunities related to demand elasticity
Designing and building elasticity models end-to-end
Evaluating model robustness and statistical validity
Translating findings into clear product and pricing insights
Collaborating with data engineering to productionize models and pipelines
Communicating statistical insights clearly to product and leadership stakeholders

Our Tech Stack

You don’t need to know everything on day one — we value strong fundamentals and the ability to learn quickly.

Our ecosystem includes:

Databricks (core platform)
AWS
Large-scale data lake architecture
High-volume travel datasets

What We’re Looking For

We’re looking for someone who:

Has experience building elasticity or demand models in production
Brings strong applied statistics and experimentation skillsIs comfortable working with large, complex datasets
Can evaluate and communicate model quality clearly
Owns projects end-to-end with high autonomy
Works collaboratively with a low-ego mindset

About You

You’ll likely thrive in this role if you have:

Experience with pricing, retail, marketplace, e-commerce, or travel data problems
A track record of ramping quickly in new domains
A systems mindset beyond individual models
Strong curiosity and the ability to discover insights in complex datasets

Nice to Have

Experience working with travel or airline datasets
Experience proposing production architectures for data science systems

Why You’ll Love Working at Longtail

At Longtail, you’ll build technology used by real airline partners at global scale.

You'll:

Work on high-impact analytical problems
Collaborate with experienced engineers and product leaders
Take real ownership of complex systems
Turn data discovery into product impact

We’re a distributed, collaborative team that values clarity, transparency, and sustainable ways of working.

Compensation & BenefitsSalary

Up to €100,000 base + bonus + Equity + Benefits

Hiring Process

Recruiter screening
Hiring manager interview
Collaborative working session
Final conversation

Ready to Build Something That Matters?

If you want to uncover insights in complex travel data and help shape the future of airline technology, we’d love to meet you. Apply now!

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

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