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September 18, 2026

Lead Data Scientist / ML Engineer

Senior • Remote

19,320 - 28,560 PLN/yr

Warsaw, MA, Poland

Quick Facts

  • Role: Lead Data Scientist / ML Engineer

Description

Lead the development, implementation, and validation of scalable machine learning solutions, including AI architectures that meet complex business goals. Translate client/business needs into data science problems, research and select the best tools/technologies (including LLMs and GenAI approaches), and oversee data pipeline/workflow standards for quality and security. Coordinate with Data Engineering and Software Engineering teams, and communicate results clearly to stakeholders within an Agile/Scrum delivery process.

Responsibilities

  • Lead ML solution development, implementation, and validation

  • Design AI solution architectures aligned with business objectives

  • Research, test, and select tools and AI solutions to meet requirements

  • Convert business problems into data science problems

  • Architect and oversee data pipelines and workflows (data quality and security)

  • Coordinate with Data Engineering and Software Engineering teams to build AI applications

  • Present findings and recommendations to stakeholders

  • Prioritize and manage tasks in an Agile/Scrum framework

Requirements

  • 7+ years of commercial experience in scalable AI solutions (ML, predictive modeling, optimization, NLP, computer vision, GenAI, LLMs, deep learning)

  • Ability to develop ML algorithms from scratch through production deployment

  • Strong Python skills (clean code, OOP) and ML libraries (Scikit-Learn, PyTorch, TensorFlow)

  • Experience deploying solutions in cloud environments (AWS or Azure)

  • Knowledge of LLM applications (AI agents, semantic search, prompt engineering, multimodal embeddings, RAG)

  • High English proficiency (C1) and strong communication/consulting experience with clients

  • Working knowledge of SQL and NoSQL databases (MongoDB, Snowflake, Databricks)

  • Good understanding of CI/CD principles (GitHub, GitHub Actions)

  • Familiarity with MLOps practices, Kubernetes, and Docker

  • Master’s or Ph.D. in a relevant field (CS, Data Science, Mathematics, Physics, or related)

  • Big Data experience with Spark, Hadoop, and Kafka is a plus

Benefits

  • Supportive AI & Big Data team and opportunities across global enterprises and startups

  • Flexible work (remote or modern offices/coworking spaces)

  • Career growth, knowledge sharing, language classes, and sponsored training/conferences (Databricks and Anthropic partnership)

  • Team-building events and an integration budget

  • Medical and sports packages, eye care, well-being support (including psychotherapy and coaching)

  • Full work equipment (laptop and necessary devices)

  • Support to boost your personal brand (conferences, blog, meetups)

  • Smooth onboarding with a dedicated buddy and an autonomous culture

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