Level: Senior

Job Field: Data, Back End

Employment Type: Full Time

Contract Type: Temporary employment

Salary: 440 to 480€ Gross/Hour

Location: Vienna

Working Model: Hybrid, Onsite

Job Summary

In this role, you will develop scalable Python applications and optimize Retrieval-Augmented Generation pipelines focusing on semantic search solutions and data processing.

Job Technologies

Your role in the team

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
Development of suitable document parsing, preprocessing, chunking and metadata strategies
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 optimization of retrieval and reranking mechanisms
Implementation of prompt construction, prompt templates and context-management strategies
Integration of Large Language Models for reliable and context-based answer generation
Implementation of citation handling, source attribution and traceability mechanisms
Development and integration of APIs and backend interfaces
Integration of AI applications into existing IT, data, database and cloud landscapes
Design and implementation of data-driven evaluation processes for RAG and AI solutions
Analysis and improvement of retrieval quality, answer quality, relevance, and system performance
Development of automated unit, integration and end-to-end tests
Implementation of logging, monitoring, error handling and observability mechanisms
Creation of technical documentation and development standards
Application of professional software-development practices, including version control, code reviews and CI/CD
Collaboration with AI architects, data scientists, developers, business departments, and other technical stakeholders
Support of AI use cases from technical conception through implementation to productive operation

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Our expectations of you

Education

Completed degree in computer science, business informatics, data science, Artificial Intelligence or a comparable qualification

Qualifications

Sehr gute Kenntnisse in Python und modernen Python-Softwareentwicklungspraktiken
Sehr gutes Verständnis von RAG-Architekturen, Large Language Models und Generativen KI-Anwendungen
Sound understanding of APIs, integration patterns and backend architectures
Knowledge of clean code principles, software architecture and maintainable application design
Strong data-driven and analytical mindset
Ability to evaluate technical solutions based on measurable quality, performance and business requirements
Very good written and spoken English skills
Structured, independent and solution-oriented way of working
Strong communication and collaboration skills

Experience

At least 5+ years of professional experience in software development with Python
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
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
Experience with relational and/or NoSQL databases
Experience with Git and professional version-control workflows
Experience with unit testing, integration testing and automated software testing
Experience with logging, monitoring, debugging and production software operations

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What we offer

Location: Vienna
Start: ASAP
Duration: 12 months+ option for extension
Capacity: 100%
Working model: Hybrid, 2 days per week on site in Vienna
You are a professional translator for a job portal, specialized in HR and tech content. IMPORTANT RULES: - Maintain the original formatting and structure of the source text. - Correctly translate technical terms (e.g., "Frontend", "Backend", "DevOps", "Scrum Master"). - Use industry-standard terminology from HR and tech. - Preserve the tone (formal/informal, Du/Sie) of the original text. - Translate only the text; do not add additional explanations or comments. - Keep the list structure exactly as in the original for bullet points. - Technical terms with international usage may remain untranslated. - Always ensure correct grammar and a natural linguistic flow. Translate the following text precisely into English: Project language: English