Python Developer – Generative AI, RAG

Qualysoft

Python Developer focusing on AI applications and Retrieval-Augmented Generation solutions for telecommunications client in Vienna. Collaborating with a team of architects and scientists to integrate AI models.

Posted 7/21/2026contractVienna • 🇦🇹 AustriaMid-LevelSenior💰 €440 - €480 per dayWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in developing scalable Python applications and backend services, with a strong focus on Retrieval-Augmented Generation solutions and AI-based applications. Proficient in implementing document ingestion workflows and managing vector databases to support advanced search functionalities.

Highest-signal resume keywords

Python Software DevelopmentAPI DevelopmentRetrieval-Augmented Generation SolutionsVector Database ManagementLarge Language Models

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Applicant Tracking System Keywords

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Hard Skills

PythonAPI DevelopmentData ProcessingRetrieval-Augmented GenerationDocument IngestionSemantic SearchVector SearchEmbeddings ManagementDocument ParsingMetadata Management

Tools & Technologies

QdrantWeaviatePineconeMilvusChromaPostgreSQLLangChainLlamaIndex

Industry Keywords

Artificial IntelligenceGenerative AIRAG ArchitecturesLarge Language ModelsData Science

Tech Stack

Tools & technologies

PostgresPython

About the role

Key responsibilities & impact

Development and implementation of scalable Python applications, backend services and AI-based solutions
Design, development and optimization of complete Retrieval-Augmented Generation pipelines
Implementation of document ingestion and data-processing workflows
Generation, management and optimization of embeddings
Implementation of semantic search, vector search and hybrid search solutions
Integration and management of vector databases and retrieval systems
Development and integration of APIs and backend interfaces
Support of AI use cases from technical conception through implementation to productive operation
Collaboration with AI architects, data scientists, developers, business departments and other technical stakeholders

Requirements

What you’ll need

At least 5+ years of professional experience in software development with Python
Very good knowledge of Python and modern Python software-development practices
Proven experience in the development of APIs, backend services and data-processing applications
Practical experience in the development and implementation of Retrieval-Augmented Generation solutions
Very good understanding of RAG architectures, Large Language Models and Generative AI applications
Experience with document ingestion, document parsing, preprocessing, chunking and metadata management
Experience with embeddings, semantic search, vector search, retrieval and reranking
Experience with vector databases such as Qdrant, Weaviate, Pinecone, Milvus, Chroma or PostgreSQL with pgvector
Experience with RAG and LLM frameworks such as LangChain, LlamaIndex or comparable technologies
Completed degree in computer science, business informatics, data science, Artificial Intelligence or a comparable qualification

Benefits

Comp & perks

Hybrid working model with 2 days per week on site in Vienna
Opportunity to actively shape scalable RAG and AI architectures
Participation in an innovative AI and data transformation project in the telecommunications environment