Senior Python Backend Engineer – GenAI Integration

Unleash responsible Generative AI — build the data-powered systems that transform insights into impact.

Krakow-based opportunity with a hybrid work model, including up to 3 remote days per week.

As a Senior Python Backend Engineer – GenAI Integration, you will be working for our client, supporting a CIB AI team focused on delivering world-class Generative AI experiences for colleagues and clients in an ethical and responsible manner. You will help expand data integration capabilities, unlock new insights, enhance decision-making, and create innovative solutions that drive efficiency and value.

Your main responsibilities:

• Create AI agents that source data from various systems used by Generative AI models.
• Design and develop reliable data transfer pipelines.
• Build microservices aligned with the wider Generative AI solution architecture.
• Integrate diverse data sources to support scalable AI experiences.
• Develop backend services using Python and FastAPI.
• Contribute to data integration initiatives involving databases, big data technologies, and cloud platforms.
• Support the implementation and evaluation of Retrieval-Augmented Generation and context-aware AI solutions.

You're ideal for this role if you have:

• At least 5 years of professional experience in backend engineering or a related field.
• Strong proficiency in Python and FastAPI.
• Experience designing and developing microservices architectures.
• Hands-on experience with MongoDB, PostgreSQL, and GCP BigQuery.
• Practical knowledge of Hadoop, Starburst, data virtualization, or vector stores.
• Experience working with Google Cloud Platform and/or Azure Cloud.
• Familiarity with RAG architectures, memory stores, and context engineering.
• Experience with Google ADK and AI evaluation systems.

It is a strong plus if you have:

• Knowledge of ethical AI practices and responsible AI frameworks.
• Experience in a financial services or investment banking environment.

Language Required for the role: Communicative English.

Eligibility for the role: Only candidates with an existing legal right to work in Europe will be considered for this role.

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Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

Tech stack

• Python
• fastapi
• Microservices architecture
• RAG (Retrieval-Augmented Generation)
• AI Agents Development
• MongoDB
• PostgreSQL
• Google Cloud Platform
• Google BigQuery
• Vector Stores