NTT DATA Romania - AI Engineer Multiple locations: Cluj, Timisoara, Iasi, Brasov, Sibiu, Bucharest, Romania (Remote options available)

Lead the implementation, deployment and test of multi-agent systems. Design and build complex agentic systems with multiple interacting agents. Implement orchestration logic including state machines, retries, fallbacks, and human escalation. Implement RAG pipelines, tool calling, and sophisticated system prompts for optimal reliability. Apply ML concepts to evaluate and improve agent performance.

Key Responsibilities:

Lead development using Google ADK and/or LangGraph
Integrate supporting libraries (LangChain, LlamaIndex, vector databases, message queues)
Build evaluation suites and run regression testing
Deploy AI services with CI/CD pipelines and observability
Debug complex failures end-to-end
Collaborate with product managers on requirements
LLM-powered agents and multi-agent workflows

Requirements:

Bachelor's in Computer Science or related field
3+ years as Software/ML/AI Engineer
1-2 years directly working with LLMs in production
Strong Python proficiency (async, type hints, testing)
Git, unit/integration testing, CI/CD expertise
REST/gRPC API design and integration
Deep LLM knowledge: tokenization, context windows, temperature, prompting patterns
Prompt engineering patterns (ReAct, chain-of-thought, tool-calling/tool-use)
Fine-tuning, adapters, RAG experience
Experience building LLM-powered applications end-to-end
Hands-on with Google ADK or LangGraph
Vector database experience (Pinecone, Weaviate, pgvector, Chroma)
Cloud deployment (GCP, AWS, Azure)

Nice-to-have:

Vertex AI/Gemini experience
LangChain, LlamaIndex, semantic search
Monitoring stacks (OpenTelemetry, Prometheus, Datadog)

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