Python Backend Engineer [AI/LLM]

Project overview

We are looking for an experienced Python Engineer for our TITANS freelancers team for an AI platform project in the field of banking.

Project requirements

• Development and maintenance of backend solutions in Python technology for the AI platform of a banking application
• Design, development, and integration of REST APIs using FastAPI
• Development and integration of AI/LLM functionalities and orchestration of AI agents
• Integration of language models with internal data sources and tools
• Design and implementation of scalable and maintainable backend services
• Automated testing, evaluation of AI response quality, and optimization of solutions
• Collaboration with the development and product team
• Tech stack / environment: Python 3.12+, FastAPI, Async/Await, REST API, Pydantic, Pytest, LLM, LangChain/LangGraph, Git, CI/CD
• Collaboration is possible only on a full-time basis in a hybrid mode ONSITE min. 1 day per week (Vienna) + REMOTE (or based on agreement with the client)
• The final remuneration depends on the candidate's experience and the progress of the selection process
• Senior experience with Python backend development
• Advanced experience with:
• Python, Async/Await, Type Hints
• FastAPI, REST API, Pydantic
• Pytest, Git/GitHub, CI/CD
• LangChain / LangGraph, Agentic AI
• LLM evaluation and prompt engineering
• backend architecture design
• Docker / Kubernetes
• Practical experience with integrating AI/LLM solutions, ideally in a production environment
• Ability to independently design and implement backend services
• Active knowledge of the English language both spoken and written (min. B2-C1)
• Advantageous: experience with projects in the field of banking / financial services
• Autonomy
• Analytical thinking
• Team player

Project details

• Start: 01.01.2027 ASAP or by agreement
• Duration: 11 months with the possibility of extension
• Location: Vienna, AT, AT
• Languages: English