Ai Engineer Job at NTT DATA (Bucuresti)

Job Responsibility

Design and build complex agentic systems with multiple interacting agents
Implement robust orchestration logic (state machines / graphs, retries, fallbacks, escalation to humans)
Implement RAG pipelines, tool calling, and sophisticated system prompts for optimal reliability, latency, and cost control
Apply core ML concepts to evaluate and improve agent performance, including dataset curation and bias/safety checks
Lead the development of agents using Google ADK and/or LangGraph, leveraging advanced features for orchestration, memory, evaluation, and observability
Integrate with supporting libraries and infrastructure (e.g., LangChain/LlamaIndex, vector databases, message queues, monitoring tools) with minimal supervision
Define success metrics, build evaluation suites for agents (automatic + human evaluation), and drive continuous improvement
Curate and maintain comprehensive prompt/test datasets
run regression tests for new model versions and prompt changes
Deploy and operate AI services in production, establishing CI/CD pipelines, observability, logging, and tracing
Debug complex failures end-to-end, identifying and document root causes across models, prompts, APIs, tools, and data
Work closely with product managers and stakeholders to shape requirements, translate them into agent capabilities, and manage expectations
Document comprehensive designs, decisions, and runbooks for complex systems

Requirements

Bachelor’s degree in Computer Science, Engineering, or related field
At least 3 years of experience as Software Engineer / ML Engineer / AI Engineer, with at least 1-2 years working directly with LLMs in real applications
Strong proficiency in Python (core language features, packaging, testing, async, type hints)
Very strong software engineering practices: version control (Git), unit/integration testing, code reviews, CI/CD
Experience building and consuming REST/gRPC APIs and integrating external tools/services
Understanding of core ML concepts: supervised/unsupervised learning, train/validation/test splits, overfitting, regularization, and common metrics (precision, recall, F1, ROC-AUC, etc.)
Good understanding of deep learning basics (neural networks, embeddings) and at least one ML/DL framework (e.g., PyTorch, TensorFlow, JAX, scikit-learn)
Deep practical knowledge of large language models
Tokenization, context windows, temperature, top-p, system vs user prompts
Prompt engineering patterns (ReAct, chain-of-thought, tool-calling/tool-use)
Fine-tuning / adapters / instruction-tuning, or experience with RAG as an alternative
Experience building LLM-powered applications end-to-end: from idea → prototype → production
Familiarity with safety and reliability considerations: hallucinations, guardrails, content filtering, privacy
Conceptual understanding of modern agentic frameworks and patterns (stateful graphs, multi-agent coordination, human-in-the-loop, memory, and evaluation)
Hands-on experience with at least one of: Google Agent Development Kit (ADK) or LangGraph
Candidates must be able to read, reason about, and extend ADK/LangGraph-based codebases
Direct production experience with both ADK and LangGraph is a strong plus
Experience working with vector databases (e.g., Pinecone, Weaviate, pgvector, Chroma) for retrieval-augmented generation
Comfortable with SQL and basic data modeling
Experience deploying on at least one major cloud platform (GCP, AWS, Azure) and using managed services (e.g., serverless runtimes, container orchestration, secrets management)

Nice to have

Vertex AI / Gemini or other hosted LLM ecosystems
Related frameworks and tools: LangChain, LlamaIndex, semantic search, evaluation frameworks (e.g., RAGAS, custom eval harnesses)
Monitoring and observability stacks (OpenTelemetry, Prometheus/Grafana/NewRelic, Datadog, etc.)

What we offer

Smooth integration and a supportive mentor
Pick your working style: choose from Remote, Hybrid or Office work opportunities
Our projects have different working hours to suit your needs
Sponsored certifications, trainings and top e-learning platforms
Private Health Insurance
Individual coaching sessions or accredited Coaching School
Epic parties or themed events

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