Lead Data Scientist

Our client helps small teams power big businesses with the must-have platform for intelligent marketing automation. Customers from over 170 countries depend on the Client's mix of pre-built automation and integration to power personalized marketing, transactional emails, and one-to-one CRM interactions throughout the customer lifecycle.

We're looking for a Lead Data Scientist to join our client's AI team and help translate an ambitious vision into tangible, impactful AI products. In this role, you'll be shaping the next generation of agentic AI systems, steering technical direction, and collaborating with a high-caliber team to make enterprise-level AI accessible to SMBs worldwide.

This is not just an engineering role; it's a chance to turn cutting-edge research into real-world solutions. You'll be driving innovation in scalable ML platforms, transforming academic breakthroughs into practical business impact, and ensuring our technology directly empowers thousands of small and medium-sized businesses.

Stack: Python, SQL, AI, ML ecosystem, cloud platforms

Salary: PLN gross/month, Contract of employment (+10% annual bonus, Creative Tax)

Working model: Hybrid, once a week in the office

Location: Krakow, Fabryczna

Recruitment process:

1. Call with MOTIFE recruiter (30 min)
2. Interview with Hiring Manager (45 min)
3. Cross-functional interview (1h)
4. Home assessment
5. Panel interview (1h)

• Architect and develop the foundational AI data platform and MLOps pipelines, ensuring enterprise-grade scalability, reliability, and performance.
• Design and deliver production-ready agentic systems, managing the full lifecycle from proof-of-concept to deployment and continuous improvement at scale.
• Advance LLM capabilities through cutting-edge RAG implementations, fine-tuning strategies, RLHF, and research into emerging AI technologies.
• Collaborate cross-functionally with product, engineering, and leadership teams to integrate AI models seamlessly and influence the company's strategic roadmap.
• Lead and mentor a high-impact team of data scientists and engineers, fostering technical excellence and translating complex AI insights into actionable business strategies.

• 6+ years of experience in building and deploying advanced machine learning solutions, with deep expertise in agentic systems, NLP, or deep learning.
• Proven track record of developing scalable data pipelines and ML platforms that support high-volume model training and inference.
• Expert-level proficiency in Python and its ML ecosystem (e.g., scikit-learn, TensorFlow, PyTorch, Hugging Face), for both research and production systems.
• Hands-on experience with RAG architectures, model fine-tuning, RLHF, evaluation frameworks, and drift detection systems.
• Strong SQL skills and expertise in data warehousing, ETL processes, and data governance best practices.
• Experience with cloud platforms (AWS, GCP, or Azure) and distributed computing frameworks (Spark or Dask).
• Ability to translate technical concepts into clear business strategies and actionable insights to influence senior stakeholders.
• Passion for democratizing technology and understanding of the challenges SMBs face in adopting AI.

Health Benefits

1. Medical

• Full coverage for employees and their dependents through LUX MED. Employees have access to the "Premium" package, providing enhanced coverage and greater access to care.
• A client pays 100% of the premium for employees and 50% for dependents.

2. Dental

• No additional cost for dental coverage- integrated into LUX MED medical plan.

3. Vision

• Reimbursement for vision expenses up to 400 PLN every 2 years.

Mental Health Tools

• Access to TELUS Health EAP to provide support and resources in a time of need.

Additional Benefits

• 10% annual bonus
• Vacation: 26 days.
• Home Office Stipend: One-time $150 equivalent home office stipend to outfit their home office.
• Calm Subscription: Premium subscription access to Calm, the #1 app for sleep, meditation, and relaxation.
• Hub Perks: Receive meal and transportation benefits when traveling to the Poland Hub.
• Baby Swag: If you have a baby or adopt, you'll receive a company-branded first bath bundle.
• Sabbatical Program: After 5 years of employment, receive a month-long paid sabbatical leave, with a sabbatical leave bonus.