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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
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Ai Engineer • Porto, Portugal, Portugal
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