Senior Data Engineer / Data Scientist (AI & LLM Solutions)

Type of contract: employment contract 

Salary range: 15 800 – 24 300 PLN gross/m 

What will you do? 

We are looking for a hands-on Senior Data Engineer / Data Scientist with a strong Python background and proven experience in AI-driven solutions. This role combines data engineering expertise with analytical and modeling capabilities. You will be responsible for building scalable data pipelines and developing AI/ML and agent-based solutions leveraging LLM technologies. You will join the Transaction Monitoring area within the Anti-Financial Crime Division at one of our UK banking clients, contributing to advanced analytics and intelligent automation initiatives.

Your tasks 

• Design and develop scalable data pipelines


• Build and optimize AI/ML models


• Develop agent-based solutions using modern Agentic AI frameworks


• Work with LLM and Generative AI solutions (prompting, orchestration, evaluation)


• Process and transform large datasets using distributed computing frameworks


• Collaborate with stakeholders to translate business needs into technical solutions

Your skills 

• Minimum 4 years of commercial experience in similar roles


• Very good knowledge of Python 3.x


• Experience with Agentic AI frameworks and AI agent development


• Experience with GCP, VertexAI, Google ADK


• Knowledge of LLM and Generative AI (prompt engineering, orchestration, evaluation)


• Experience with PySpark and distributed data processing


• Practical experience within the Big Data ecosystem


• Experience in developing analytical or alerting models


• Solid understanding of data pipelines and scalable data architectures


• Strong analytical and problem-solving skills


• English level B2+

We offer you 

• Hybrid work in one of our locations: Lodz, Poznan, Krakow, Warszawa, Wroclaw (2 office days per week) 


• Working in a highly experienced and dedicated team 


• Benefit package that can be tailored to your personal needs (private medical coverage, sport & recreation package, lunch subsidy, life insurance, etc.) 


• On-line training and certifications fit for career path 


• Access to e-learning platform 


• Mindgram - a holistic mental health and wellbeing platform 


• Work From Anywhere (WFA) - the temporary option to work remotely outside of Poland for up to 140 days per year (including Italy, Spain, the UK, Germany, Portugal, and Bulgaria) 


• Social events