Senior Data Scientist
SKM GroupAbout the role
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Senior Data Scientist
We’re looking for a Senior Data Scientist (LLMs & Applied AI) to design and deliver production-grade AI solutions, with a focus on fine-tuning and deploying Large Language Models on proprietary data.
You’ll work at the intersection of machine learning, data engineering, and real-world product delivery, turning advanced models into scalable, business-ready systems.
Tech Stack
Core: Python, PyTorch / TensorFlow, Hugging Face
AI/ML: LLM fine-tuning, RAG
Data: Pandas, NumPy
Infra (varies by project): Cloud, APIs, MLOps tooling
What You’ll Do
Prepare, clean, and structure proprietary datasets for training and evaluation
Fine-tune and optimize LLMs using techniques such as LoRA / QLoRA
Design evaluation frameworks to measure model performance and business impact
Build and deploy inference pipelines for production use
Work closely with stakeholders to translate business problems into ML solutions
Improve model performance through experimentation, iteration, and data-centric approaches
Contribute to architecture decisions around scalable AI systems
What We’re Looking For
5+ years of experience in Data Science / Machine Learning roles
Strong background in ML, NLP, and applied statistics
Hands-on experience with Python and ML frameworks (PyTorch or TensorFlow)
Experience working with LLMs (fine-tuning, prompting, or RAG-based systems)
Solid understanding of model evaluation, experimentation, and performance trade-offs
Experience deploying models into production environments
Nice to Have
Experience with MLOps (CI/CD for ML, monitoring, retraining pipelines)
Familiarity with RAG architectures or vector databases
Experience working with cloud platforms (AWS / Azure / GCP)
Background in handling large-scale or proprietary datasets
What do we offer you?
Attractive salary
Large freedom and real influence
No unhealthy competition, team approach to meeting challenges
Remote-first, flexible working culture
Company apartments in cool cities across Europe: work and enjoy a memorable getaway
About Us
We are a software house with 18 years of experience and a global portfolio of projects. We help businesses modernize, scale, and innovate through custom software solutions. Our team embraces unconventional ideas and new technologies, delivering solutions with real impact. If you value professionalism, creativity, and a strong engineering culture, you'll feel at home here.
join our team: Apply Now!
Job
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Senior Data Scientist
Kraków, Office or Remote
4,300€ - 10,000€ / month (B2B)zzz
Job
Name *
E-mail Address *
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Responsibilities
- Prepare, clean, and structure proprietary datasets for training and evaluation
- Fine-tune and optimize LLMs using techniques such as LoRA / QLoRA
- Design evaluation frameworks to measure model performance and business impact
- Build and deploy inference pipelines for production use
- Work closely with stakeholders to translate business problems into ML solutions
- Improve model performance through experimentation, iteration, and data-centric approaches
- Contribute to architecture decisions around scalable AI systems
Qualifications
- 5+ years of experience in Data Science / Machine Learning roles
- Strong background in ML, NLP, and applied statistics
- Hands-on experience with Python and ML frameworks (PyTorch or TensorFlow)
- Experience working with LLMs (fine-tuning, prompting, or RAG-based systems)
- Solid understanding of model evaluation, experimentation, and performance trade-offs
- Experience deploying models into production environments
Benefits
- Attractive salary
- Large freedom and real influence
- No unhealthy competition, team approach to meeting challenges
- Remote-first, flexible working culture
- Company apartments in cool cities across Europe
Skills mentioned
About SKM Group
Every business operates according to it's own rules. We understand that - that's why we look for unique solutions for your company. We are a software house with a 18-year history, a rich portfolio and projects all over the world. We have built our brand on professionalism and flexibility in delivering software solutions. We are not afraid of unconventional ideas and value innovation and imaginative change. What is our focus? Software solutions that meet the challenges of businesses. Production systems, transport, e-commerce: anything that improves productivity – on any platform. Our core competences are in Industry 4.0, integrations, migrating legacy systems and custom software development.