FlixMobility

Intercity bus and rail travel platform

Senior Data Scientist

Data ScienceConfirmed live in the last 24 hours

Full-timeLisbon, PortugalNo salary listedIn-person

About the Job

Requirements

Hold a Master's or PhD in Statistics, Econometrics, Applied Mathematics, Data Science, or a related quantitative field.
Have 5+ years of experience in a data science or quantitative research role, with hands-on expertise designing and evaluating causal experiments such as geo experiments, time-series holdouts, or synthetic control studies.
Demonstrate strong command of causal inference methods, including difference-in-differences, synthetic control, Bayesian structural time series, or matched market testing.
Be proficient in Python, SQL, and Power BI, and experienced with statistical modelling libraries such as statsmodels, PyMC, CausalImpact, or equivalent tools.
Be comfortable with version control (Git), reproducible workflows, and cloud or data warehouse environments such as BigQuery or Snowflake.
Have the ability to present statistical findings to non-technical audiences and contribute to strategic choices with data.

Responsibilities

Own the design, execution, and continuous improvement of geo-based, time-based, and synthetic control experiment frameworks, ensuring methodological rigour and scalability across global markets and channels.
Apply econometric and causal inference techniques, including difference-in-differences, synthetic control, and Bayesian structural time series, to measure the incremental effect of marketing activities on bookings and revenue.
Build and manage a structured test-and-learn programme across paid channels, identifying measurement gaps and prioritising experiments by expected business value.
Contribute to the development and validation of attribution models (CLV-MTA and MMM), providing benchmarks that reduce reliance on platform self-reported data.
Translate complex causal findings into actionable recommendations for stakeholders including marketing teams, finance, and senior management.
Review experiment designs, create documentation, and help shape internal standards for measuring marketing effectiveness across channels.

Desired Qualifications

Experience in marketing measurement, media mix modelling, or growth reporting.
Familiarity with Bayesian methods.

At Flix, we offer a dynamic work environment with competitive pay, strong growth opportunities, and a tech-driven approach to making travel more accessible, sustainable, and affordable. 

As a Senior Data Scientist in ourCommercial & Marketing Intelligence team at Flix, you can make an impact by owning and evolving our causal measurement practice — designing and running experiments that directly shape how we allocate our global marketing budget. You will work closely with a dedicated team across Marketing & Sales, Revenue Management, Reporting, and Engineering to ensure our incrementality evidence drives smarter, more transparent choices at scale.

About the Role

Own the design, execution, and continuous improvement of geo-based, time-based, and synthetic control experiment frameworks, ensuring methodological rigour and scalability across global markets and channels
Apply econometric and causal inference techniques — including difference-in-differences, synthetic control, and Bayesian structural time series — to measure the true incremental effect of marketing activities on bookings and revenue
Build and manage a structured test-and-learn programme across paid channels, identifying measurement gaps and prioritising experiments by expected business value
Contribute to the development and validation of attribution models (CLV-MTA and MMM), providing reliable benchmarks that reduce reliance on platform self-reported data
Translate complex causal findings into clear, actionable recommendations for a wide range of stakeholders including marketing teams, finance, and senior management
Review experiment designs, create thorough documentation, and help shape internal standards for how Flix measures marketing effectiveness across all channels

About You

Holds a Master's or PhD in Statistics, Econometrics, Applied Mathematics, Data Science, or a related quantitative field
Brings 5+ years of experience in a data science or quantitative research role, with hands-on expertise in designing and evaluating causal experiments such as geo experiments, time-series holdouts, or synthetic control studies
Demonstrate strong command of causal inference methods including difference-in-differences, synthetic control, Bayesian structural time series, or matched market testing
Proficient in Python,SQL, Power BI and experienced with statistical modelling libraries such as statsmodels, PyMC, CausalImpact, or equivalent tools
Comfortable with version control (Git), reproducible workflows, and cloud or data warehouse environments such as BigQuery or Snowflake
Proven ability to present statistical findings to non-technical audiences and contribute to strategic choices with data
Experience in marketing measurement, media mix modelling, or growth reporting is a plus — as is familiarity with Bayesian methods

We recognize that everyone carries a unique set of valuable skills and experiences. If you think you could have an impact even though you don't meet 100% of the requirements, we still encourage you to apply. We want to hear from you! 

What We Offer

Travel perks: 12 free Flix vouchers + 12 discount vouchers for friends & family.
Work from (M)Anywhere: Depending on your role, work from another location for up to 60 days per year.
Hybrid work model: We are an office-first company, but we offer flexibility to balance work and life.
Wellbeing support: Access confidential 1:1 counselling, courses, and stress management for yourself and up to four family members.
Learning & Development: Take advantage of language classes, training courses, and expert-led sessions to grow your skills.
Mentoring Program: Connect with experienced colleagues to gain insights and accelerate your career.

To view more local benefits specific to each office location, please check out this link: Locations - Flix Career

Why Join Flix?

At Flix, you’ll find teams that rally together to overcome challenges and spark creativity. We believe in ownership culture - giving you the freedom to take initiative, make an impact, and shape your own career path.
As we continue to expand across the globe, you can make a real difference in how we work.

If you’re ready to grow and lead your journey, Flix is the place for you!

About the Company

FlixMobility

Intercity bus and rail travel platform

FlixMobility, now operating under the corporate brand Flix, is a travel technology company connecting passengers with intercity bus and rail services. Through brands including FlixBus and FlixTrain, it manages route planning, pricing, ticketing, marketing and the digital customer experience while transportation partners operate many vehicles. The platform serves travelers across Europe, North America and other markets. Its model combines software, network planning and partner operations to make long-distance ground travel bookable through a unified consumer service.

Company size: Not listed
Company stage: Not listed
Total funding: Not listed
Headquarters: Not listed
Founded: Not listed

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