XpertDirect

applied AI engineer

In short

This role involves building production AI backend systems for a B2B AI software company that combines LLMs, enterprise data, and modern software engineering into intelligent assistants, enterprise search, and AI-powered workflows. It requires at least 3 years of backend/ML engineering experience, strong Python, FastAPI, PostgreSQL, Docker, AWS, and hands-on experience with LLM APIs and RAG-based applications. Work is hybrid in Berlin. No salary or benefits were specified.

Company
The company develops B2B AI software, combining large language models, enterprise data, and modern software engineering to build production AI capabilities. Its customer-facing features include intelligent assistants, enterprise search, knowledge retrieval, and AI-powered workflows.
Tasks
No tasks specified
Requirements
•At least 3 years of experience in Software Engineering, Backend Engineering, Applied AI, ML Engineering, or a similar role
•Strong Python skills
•Experience with FastAPI or similar backend frameworks
•Experience integrating LLM APIs
•Experience with RAG or retrieval-based AI applications
•PostgreSQL skills
•Experience with REST APIs and system integrations
•Docker skills
•AWS skills
•Experience building production software, not only AI prototypes
Nice to have
•OpenAI / Anthropic APIs
•LangChain / LangGraph / LlamaIndex
•pgvector / Qdrant / Pinecone / Weaviate
•Embeddings and semantic search
•Hybrid search / reranking
•LLM evaluation and observability
•Tool calling / AI agents
•MCP
•Redis
•Kubernetes
•Terraform
•OpenTelemetry
•CI/CD
•Experience working with enterprise data and knowledge systems
Conditions
No conditions specified in the posting.

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