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Deutsche Telekom Digital Labs

Lead AI Engineer

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Description

We are looking for an experienced Lead AI Engineer to lead the design and development of production-grade generative AI, LLM, RAG, and agentic AI solutions.

The ideal candidate should have strong hands-on experience in Python, LLMs, RAG architecture, AI agents, LangChain/LangGraph, vector databases, cloud, and MLOps, along with the ability to design scalable AI systems and mentor engineering teams.


Responsibilities:

  • Design and develop scalable GenAI and LLM-powered applications for enterprise use cases.
  • Architect and implement advanced RAG pipelines, including document processing, embeddings, retrieval, re-ranking, and evaluation.
  • Build agentic AI and multi-agent systems using frameworks such as LangChain, LangGraph, AutoGen, or Semantic Kernel.
  • Integrate LLMs such as OpenAI, Azure OpenAI, Claude, Gemini, or open-source LLMs.
  • Develop AI services and microservices using Python and FastAPI.
  • Work with vector databases such as FAISS, Pinecone, Weaviate, Milvus, or Azure AI Search.
  • Implement prompt engineering, function/tool calling, structured outputs, memory, and agent orchestration.
  • Build and maintain LLM evaluation and monitoring frameworks to improve accuracy, relevance, safety, and reliability.
  • Deploy AI solutions on Azure/AWS/GCP using Docker and Kubernetes.
  • Establish and improve MLOps/LLMOps pipelines, CI/CD, model monitoring, and production deployment practices.
  • Work on AI security, responsible AI, guardrails, prompt injection prevention, and LLM safety.
  • Drive technical architecture, code reviews, engineering best practices, and system design.
  • Mentor engineers and provide technical leadership across AI initiatives.


Requirements:

  • 8-10 years of software/AI engineering experience.
  • Strong Python programming.
  • Hands-on generative AI/LLM experience.
  • Strong RAG architecture and implementation experience.
  • Experience with Agentic AI / AI Agents / Multi-Agent Systems.
  • LangChain / LangGraph or equivalent agent frameworks.
  • Experience with Vector Databases.
  • LLM APIs such as OpenAI / Azure OpenAI / Claude / Gemini.
  • Experience in FastAPI / REST APIs / Microservices, Docker, and Kubernetes.
  • Experience with at least one major cloud platform: Azure, AWS, or GCP.
  • Understanding of MLOps / LLMOps.
  • Strong knowledge of AI system architecture and scalability.
  • Good technical leadership and mentoring experience.
  • Good to have: LlamaIndex, AutoGen, Semantic Kernel, Hugging Face Transformers, PyTorch / TensorFlow, MLflow / Kubeflow, Terraform and CI/CD, LLM evaluation and observability tools, AI red teaming / AI security, OWASP LLM Top 10 / NIST AI RMF, Fine-tuning / LoRA / QLoRA.
  • Knowledge graphs and hybrid search.

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