Data Scientist - Deep Learning Forecasting

Fetcherr; Kraków; On-site; PLN 180,000 - 240,000; Full time

Job summary

Fetcherr in Kraków is seeking a seasoned Data Scientist to advance econometric and machine learning models for demand forecasting that translate into measurable profit growth. You will leverage Python and the ML stack to build accurate forecasts and robust pipelines.

You will collaborate with product, data engineering, MLOPS and Platform to deploy models in production, communicate findings to executives, and push for improvements in accuracy and scalability, applying state-of-the-art techniques

Qualifications

• 5+ years of hands-on data science with proven business impact.
• Proficiency in Python and ML stack (PyTorch or TensorFlow, Pandas, NumPy, Scikit-learn).
• Expertise in time-series forecasting, ideally Deep Learning based, in demand prediction.
• Feature engineering and explainability, with model validation.
• Master’s or PhD in CS/ML/Statistics or related field.
• Strong ML production knowledge (versioning, testing, reproducibility, deployment).
• Excellent communication and collaboration skills.

Responsibilities

• Develop and implement state-of-the-art econometric and ML models for demand forecasting.
• Experiment to improve accuracy, robustness, and scalability.
• Collaborate with product, data engineering, MLOPS and Platform to deploy ML systems in production.
• Communicate complex technical findings clearly to non-technical stakeholders.

Skills

Python

Time-series forecasting

Deep Learning

ML Ops

Communication

PyTorch

Pandas

Education

Master’s or PhD in CS/ML/Statistics

Tools

PyTorch

TensorFlow

Pandas

NumPy

Scikit-learn

Job description

Fetcherr builds responsible AI that transforms market complexity into measurable profit growth. At the core of the company is the Market Model - a proprietary AI-powered model delivering accurate, granular demand predictions with 96% forecast accuracy and real-time decision intelligence for commercial teams. Built on a glass-box architecture, it uses market data - not personal data - with full transparency into logic and outcomes. First deployed in global aviation, the technology is industry-agnostic and scales across volatile markets. Fetcherr delivers a consistent average profit uplift of 7%, with corporate partners including Delta, Virgin Atlantic, WestJet, Viva, and Azul.

We are seeking a talented and self-driven experienced Data Scientist to help advance our machine learning capabilities. This is a key role for someone passionate about leveraging machine learning to solve complex, real-world problems and deliver measurable business impact.

Responsibilities

• Develop and implement state-of-the-art econometric and machine learning models for demand forecasting.
• Conduct research and experimentation to evaluate novel approaches for improving accuracy, robustness, and scalability.
• Collaborate with cross-functional teams (including product, data engineering, MLOPS and Platform) to deploy ML systems in production.
• Clearly communicate complex technical findings to non-technical stakeholders, including product leaders and executives.

Requirements

• 5+ years of hands-on experience in data science and machine learning with a proven record of leveraging modeling into business outcomes.
• Proficiency in Python and its ML/data stack (e.g., PyTorch or TensorFlow, Pandas, NumPy, Scikit-learn).
• Expertise in time-series forecasting, ideally Deep Learning based, preferably in demand prediction or related areas.
• Feature engineering, feature importance testing, explainability based experience.
• Master’s or PhD in Computer Science, Machine Learning, Statistics, Engineering or a relevant field.
• Solid understanding of ML production workflows (versioning, testing, reproducibility, and deployment).
• Excellent communication and collaboration skills.

Nice to have

• Publications in top-tier, peer-reviewed ML/AI venues (e.g., ICLR, ICML, NIPS, etc.).
• Experience applying ML in domains like finance, trading, revenue management etc.
• Familiarity with cloud based solutions on GCP platform (e.g., Vertex AI, PubSub, Cloud Run Functions).
• Strong data visualization and exploratory data analysis skills.
• Familiarity with code optimization, containerization (e.g., Docker), CI/CD, or cloud-native architectures.
• Participation in competitive programming or data science challenges (e.g., Kaggle).

If you're excited about building impactful AI systems in a high-growth startup environment, and want to help redefine how industries price, forecast, and optimize, we’d love to hear from you.