Senior Data Scientist, Fleet Optimization

SIXT

full-time

Posted on: 1/8/2026

Location Type: Remote

Location: Portugal

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About the role

Lead the data science efforts behind planning and optimizing SIXT’s rental car fleet
Guide and mentor a team of 2-3 data scientists to deliver high-impact solutions
Act as a trusted advisor to stakeholders, helping them leverage data for strategic decision-making
Develop explainable long-term demand forecasts that drive fleet planning and investment strategies
Build optimization and simulation models to support data-driven fleet steering decisions
Collaborate with cross-functional teams to bring solutions to production

Strong track record in Data Science, Machine Learning, and Advanced Optimization techniques
Expertise in Revenue Management or Operations Research is a bonus
Proficient in Python and cloud-based ecosystems, preferably AWS
Hands-on experience deploying, monitoring, and maintaining machine learning models in real-world environments
Passion for Decision Intelligence, AI-driven solutions, and solving complex, high-impact business challenges
Excellent stakeholder engagement and data storytelling skills
Fluent in English

Benefits

Enjoy 28 days of vacation, an additional day off for your birthday, and 1 volunteer day per year
Benefit from a hybrid working model, flexible working hours, and no dress code
Access discounts on SIXT rent, share, ride, and SIXT+, along with partner discounts
Participate in training programs, external conferences, and internal dev & tech talks designed for your personal growth and development
Private health insurance to support your well-being
Enjoy the Coverflex advantage system to enhance your employee experience

Tip: use these terms in your resume and cover letter to boost ATS matches.

Data ScienceMachine LearningAdvanced OptimizationRevenue ManagementOperations ResearchPythonDecision IntelligenceAI-driven solutions

team leadershipstakeholder engagementdata storytelling