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Senior AI Engineer

Senior AI Engineer

Hexa PeoplePorto, Portugal, Portugal
Há 17 dias
Descrição do cargo

Main Responsibilities

  • Architect and develop AI-driven solutions using LLMs including GPT, Claude, Gemini, and LLaMA.
  • Build and maintain RAG pipelines with integration to a vector database for semantic search and retrieval.
  • Design and manage workflows using LangChain, LangGraph, and LangSmith.
  • Apply Model Context Protocol (MCP) for structured and reusable prompt engineering.
  • Develop backend services primarily in PHP (preferred), or alternatively in Python or Java.
  • Design, consume, and maintain RESTful and external APIs, ensuring secure and efficient integrations.
  • Deploy AI services across AWS, Azure, or on-prem infrastructure as required.
  • Monitor, evaluate, and optimize LLM usage and performance in real-world applications.
  • Lead and mentor engineers across AI / ML development efforts.

Key Requirements

  • 2+ years of experience in AI, NLP, or LLM-based applications.
  • 5+ years of experience with API development and consumption (REST, JSON, OAuth, etc.).
  • Hands-on experience working with at least one of the major LLMs : GPT, Claude, Gemini, or LLaMA.
  • Practical experience with RAG architecture and vector databases (e.g., ChromaDB, Pinecone, Weaviate).
  • Strong backend development skills, preferably in PHP (alternatively Python or Java).
  • Familiarity with LangChain, LangGraph, and LangSmith.
  • Solid understanding of MCP (Model Context Protocol) and structured prompt design.
  • Experience deploying and operating AI systems on AWS, Azure, or on-prem environments.
  • Additional Requirements

  • Familiarity with containerization and orchestration tools (e.g., Docker, Kubernetes).
  • Experience with open-source LLM frameworks or fine-tuning custom models.
  • Experience integrating speech-to-text (STT) and text-to-speech (TTS) engines (e.g., Whisper, Amazon Polly, Google Speech, Azure Speech).
  • Exposure to DevOps, CI / CD pipelines, or MLOps platforms.
  • What We Offer

  • A leadership role in an AI-first product team
  • A hybrid working model (remote + office)
  • Flexible working hours
  • An onboarding program to guide you through all the company's departments
  • Several amenities and perks
  • Unique office space in the historical centre of Porto
  • All the benefits of a large corporation combined with an informal and friendly environment
  • A commitment to your development (we enjoy sharing and learning), with a career plan and regular feedback (regular 1-1 meetings and performance reviews)
  • Health insurance
  • Criar um alerta de emprego para esta pesquisa

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