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W3Global

Data Scientist / ML Engineer

W3Global
Poland · Contract · Entry
Position1: Data Scientist / ML Engineer

Location in Poland - Krakow

Hiring mode: Contract

Hybrid 3 days office and 2 days WFH works

Day rate : open

Required

Core Programming & Tools

  • Hands-on experience building and deploying ML models on large-scale production datasets
  • Strong programming proficiency in Python with production-quality, well-structured code
  • Proficient in SQL; experience working with large-volume datasets in Spark and/or Snowflake
  • Experience with Git for version control, code review, and collaboration
  • Familiarity with experiment tracking and model versioning (e.g., MLflow)

Classical ML & Statistical Modeling

  • Time series forecasting (ARIMA, Prophet, deep learning approaches)
  • Optimization modeling (linear programming, mixed-integer programming)
  • Classification, regression, clustering, and ensemble methods
  • Feature engineering, data wrangling, and statistical analysis on structured data

LLM Application & AI Agent Development

  • AI Agent development: experience building agentic frameworks using Azure AI Studio and Azure model endpoints, including tool-use patterns and multi-step orchestration
  • RAG pipeline development: document ingestion/chunking, vector embedding/indexing (Azure AI Search), and response generation using LLM endpoints
  • Prompt engineering and chain-of-thought design for complex supply chain workflows
  • Experience with orchestration frameworks like LangChain or LlamaIndex

Azure & Production Delivery

  • Familiar with core Azure resources: Azure Machine Learning, Azure AI Studio, Azure OpenAI Service, and Azure storage/compute
  • Experience delivering production-ready models with proper testing, validation, and monitoring
  • Basic UI skills (Streamlit or Gradio) for quick prototyping and demos

Work Style

  • Highly self-motivated, collaborative, and able to deliver in a fast-paced environment
  • Able to start contributing within 1-2 weeks with minimal ramp-up

Nice to Have

  • Supply chain domain experience (demand forecasting, inventory optimization, logistics, etc.)
  • Familiarity with ERP data structures (Oracle, SAP)

Key Skills

Ranked by relevance

ai machine learning data structures deep learning prototyping streamlit python oracle spark git sql ui
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Country Guide

Poland

Fast-growing Central European IT hub

Posted
Mar 04, 2026
Type
Contract
Level
Entry
Location
Cracow
Company
W3Global

Industries

Staffing Recruiting

Categories

Information Technology

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