Senior Data Scientist

1 week ago


Athens, Attica, Greece Signify Technology Full time €50,000 - €70,000 per year

Senior Data Scientist | Revenue Management Platform | Processing 24M+ Tickets Annually

Athens, Greece - Hybrid

Up to €65,000

We're looking for a
Senior Data Scientist
to help shape the future of our
revenue management platform
, which processes over
24 million tickets per year
. You'll work at the intersection of
machine learning, experimentation, and product
, building models that directly impact business outcomes on a massive scale.

What You'll Do

  • Tackle high-impact, ambiguous problems:
    Collaborate with Product, Engineering, and Design to define metrics, success criteria, and roadmaps.
  • Build and ship advanced models:
    From forecasting and ranking to optimization, clustering, causal inference, and reinforcement learning (RL).
  • Work on RL challenges:
    Formulate MDPs/bandits, design reward functions, implement policies (e.g., DQN, PPO, actor-critic), and run offline evaluations.
  • Design rigorous experiments:
    A/B tests, CUPED, and sequential testing — then translate results into clear business insights.
  • Productionize your work:
    Partner with ML Engineers to deploy services, monitor performance, and manage model retraining cycles.

What We're Looking For

  • 6+ years of experience in
    Data Science or Applied ML
    , with a proven record of delivering production models.
  • Strong foundations in
    statistics, inference, experimentation
    , and
    optimization
    .
  • Expert-level
    Python
    (NumPy, Pandas, PyTorch or TensorFlow).
  • Experience running and analyzing
    large-scale online experiments
    .
  • Familiarity with
    data platforms, Git, testing
    , and collaborative software practices.
  • Excellent
    product intuition
    — you turn business challenges into measurable ML solutions.

Interested? Apply to be considered with interviews commencing from the 3rd November.


  • Data Scientist

    5 days ago


    Athens, Attica, Greece doValue Greece Full time €60,000 - €80,000 per year

    Περιγραφή θέσης εργασίας:We are looking for aData Scientistto join our Data Strategy team.RoleAre you a curious and driven Data Scientist looking to apply your analytical skills to real-world business challenges? Join our Data Strategy team and help transform data into actionable insights. You'll work closely with cross-functional teams...

  • Data Scientist

    6 days ago


    Athens, Attica, Greece NN Group Full time €40,000 - €60,000 per year

    About us:At NN Hellas, we're proud to be the #1 insurance company in Greece, offering innovative insurance solutions that cover the entire territory of Greece since the 80's We have a proven record of taking great care of our employees – we were considered a Top-Employer for 7 consecutive years.What you will do:As a Data Scientist in the Sales AI team at...


  • Athens, Attica, Greece Optasia Full time €60,000 - €120,000 per year

    Optasia is a fully enabled B2B2X financial technology platform covering scoring, financial decisioning, disbursement and collection. We are committed to enabling financial inclusion for all. We are changing the world our way.We are seeking for enthusiastic professionals, with energy, who are results driven and have can-do attitude, who want to be part of a...

  • Data Scientist

    2 weeks ago


    Athens, Attica, Greece Satori Analytics Full time €40,000 - €80,000 per year

    Are you passionate about AI? At Satori Analytics, we aim to change the world one algorithm at a time by bringing clarity to global brands thought Data & AI. From cloud-based ecosystems for fintech to predictive models for airlines, our cutting-edge solutions cover the entire data lifecycle—from ingestion to AI applications. As a fast-growing scale-up, our...


  • Athens, Attica, Greece DEMO AΒΕΕ Full time €60,000 - €90,000 per year

    Downstream Process Development Senior Scientist5 ημέρες για να κάνεις αίτησηDEMO AΒΕΕΑΚΟΛΟΥΘΗΣΕ Φαρμακευτικές & Κλάδος ΥγείαςΠροβολή 11 θέσεωνΑθήναΤοποθεσίαΑθήναπριν 25 μέρεςΗμ. ανάρτησηςπριν 25 μέρεςΜε κάποια...

  • Data Scientist

    1 week ago


    Athens, Attica, Greece ΑΒ ΒΑΣΙΛΟΠΟΥΛΟΣ SHOP & GO Full time €65,000 - €85,000 per year

    Your purpose As a Data Scientist, you will transform complex data into actionable insights that drive strategic decisions for Alfa-Beta. By leveraging machine learning, predictive modeling, and advanced analytics, you will analyze customer behavior to uncover trends, preferences, and opportunities that enhance customer experiences and support commercial...


  • Athens, Attica, Greece LuxeVision Consulting LLC Full time $18,000 - $36,000 per year

    The Role: READ BEFORE APPLYING – Important Instructions We're Hiring: Senior Data Engineer – Join Luxe Vision Consulting Are you a seasoned Data Engineer eager to collaborate with top U.S. companies? Luxe Vision Consulting is seeking a talented individual to design, build, and optimize scalable data pipelines for our clients. Position: Senior Data...


  • Athens, Attica, Greece Omilia Full time €45,000 - €75,000 per year

    DescriptionAt Omilia, we are revolutionizing the world of customer service through Conversational AI. We believe in creating natural, human-like interactions between people and technology. Our team is at the forefront of innovation, pushing the boundaries of what's possible in speech and language understanding. We are looking for a brilliant and passionate...

  • Senior Data Engineer

    2 weeks ago


    Athens, Attica, Greece iTechScope Full time €60,000 - €80,000 per year

    On behalf of our client, a cutting-edge provider of data intelligence solutions for the global maritime industry, we are looking for aSenior Data Engineer. This is a unique opportunity to work with a team dedicated to transforming operational data into actionable insights using advanced cloud-based technologies.In this role, you'll be instrumental in...


  • Athens, Attica, Greece DEMO AΒΕΕ Full time €40,000 - €80,000 per year

    Biotech Upstream Process Development Senior ScientistDEMO AΒΕΕΑΚΟΛΟΥΘΗΣΕ Φαρμακευτικές & Κλάδος ΥγείαςΠροβολή 12 θέσεωνΑθήναΤοποθεσίαΑθήναπριν μερικά δευτερόλεπταΗμ. ανάρτησηςπριν μερικά δευτερόλεπταΜε κάποια...