Senior Data Scientist (m/f/x)

GRID esports; Wrocław; On-site; PLN 260,000 - 380,000; Full time

Job summary

GRID esports in Wrocław is seeking a senior ML/data scientist to design, build, and deploy real-time prediction systems for live esports betting markets.

You will extract predictive signals from high-frequency telemetry, develop backtests, and translate models into production-grade pipelines that run in live environments.

Qualifications

• 5+ years of professional experience in data science, quantitative research, or statistical modeling.
• Deep, intuitive understanding of probability, statistics, and machine learning theory.
• Expert-level skills in the Python data stack. You write clean, production-grade code.
• Proven experience designing complex backtesting environments and defining custom evaluation metrics for unique business problems.

Responsibilities

• Design, build, and optimise the machine learning models and statistical frameworks that power our real-time odds and betting markets
• Extract deep predictive signals from raw, high-frequency esports telemetry, turning complex in-game mechanics into structured modelling features
• Focus on model performance and probability calibration. Design rigorous backtesting frameworks to prevent data leakage and evaluate performance against historical market baselines
• Create the mathematical rules and probabilistic derivations that translate baseline win probabilities into complex derivative markets (handicaps, totals, player props)
• Ensure your models are seamlessly translated into production-grade pipelines and microservices

Skills

5+ years data science experience

Probability and statistics

Production-grade Python

Backtesting framework design

Tools

Python data stack (NumPy, Pandas)

MLFlow

Airflow

Job description

• Are you excited about building ML systems that make predictions in real‑time?
• Are you driven by building things end‑to‑end, from research to live systems?

If the answers to the above questions are yes, then this role could be ideal for you! We are building real‑time prediction systems for competitive esports (CS2, Dota 2, League of Legends). Our models power live betting markets, producing continuously updated win probabilities, handicap lines, over/under totals, and specialty markets during matches.

Job Requirements

What you will do

• Design, build, and optimise the machine learning models and statistical frameworks that power our real‑time odds and betting markets
• Extract deep predictive signals from raw, high‑frequency esports telemetry, turning complex in‑game mechanics into structured modelling features
• Focus on model performance and probability calibration. Design rigorous backtesting frameworks to prevent data leakage and evaluate performance against historical market baselines
• Create the mathematical rules and probabilistic derivations that translate baseline win probabilities into complex derivative markets (handicaps, totals, player props)
• Ensure your models are seamlessly translated into production‑grade pipelines and microservices

Your skills will include (must have)

• 5+ years of professional experience in data science, quantitative research, or statistical modeling
• Deep, intuitive understanding of probability, statistics, and machine learning theory
• Expert‑level skills in the Python data stack. You write clean, production‑grade code
• Proven experience designing complex backtesting environments and defining custom evaluation metrics for unique business problems

Nice to have

• Strong understanding of betting concepts, odds, overround, market‑making, or quantitative trading. You understand what it means to build models where calibrated probabilities directly drive revenue
• Experience modelling off streaming data or data that updates continuously over time
• Deep knowledge of competitive esports (CS2, Dota 2, LoL), the underlying game mechanics, and the competitive meta
• Understanding of modern MLOps principles and experience with tools like MLFlow, Airflow, etc.