Senior Python Backend Engineer (f/m/x)

• Wien
• Freiberuflich

Our client in the field of development of AI-powered platforms is working on a modern, AI-based solution for conversational applications. The focus is on scalable backend systems as well as production-ready engineering practices in a demanding, regulated environment.

QUICK-FACTS

Industry: Development of AI-powered platforms

Location: Vienna, Prague

Capacity: 160 hrs./month

Duration: 18 months, extension possible

Language: English

Your responsibilities:

• You develop and optimize backend web services for an AI-powered conversational system.
• You design and implement REST APIs (e.g. using FastAPI).
• You create OpenAPI-based service designs and are responsible for schema and data validation.
• You implement tests with pytest and maintain CI pipelines.
• You collaborate closely with other developers using Git/GitHub, including code reviews.
• You ensure high software quality and modern engineering standards.
• You contribute to LLM-based applications (e.g. agent frameworks, prompt engineering).
• You analyze and improve model output quality.
• You implement observability practices (logging, tracing, metrics).
• You work in containerized environments using Docker and Kubernetes.
• You consistently apply Clean Architecture and Dependency Injection.

Your profile:

• Several years of experience as a Senior Python Backend Engineer in complex projects.
• Very strong knowledge of Python (3.12+), especially typing and asynchronous programming.
• Experience with modern web frameworks such as FastAPI.
• Know-how in schema validation (e.g. Pydantic).
• Hands-on experience in testing (pytest) and CI/CD processes.
• Confident handling of Git/GitHub workflows and code reviews.
• Strong understanding of software architecture and scalable systems.
• Experience with Docker and Kubernetes.
• Knowledge in the area of observability (logging, tracing, monitoring).
• Experience with LLM applications, prompt engineering, or agent frameworks is an advantage.
• Experience in a regulated or enterprise environment is a plus.
• Very good English skills, both written and spoken.

What you can expect:

• Hybrid working model with 2 days per week on-site.
• Work locations: Vienna (Austria) or Prague (Czech Republic).
• Start date: June 10, 2026.
• Duration: 18 months with option to extend.
• Capacity: 160 hours per month.
• The opportunity to work on innovative AI technologies and modern backend architectures.

Verdiene 1000 € für eine erfolgreiche Empfehlung

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