Lead AI Engineer

Description

Job Summary: We are seeking a Senior AI Engineer with experience in LLMs, NLP, RAG, data pipelines, and inference optimization to develop AI solutions. Key Highlights: 1. Senior experience in AI Engineering, LLMs, and NLP 2. Strong experience with RAG and vector databases 3. Building robust data pipelines for training and evaluation What We Are Looking For? * Senior experience (5+ years) in AI Engineering, specifically with LLMs and NLP systems; * Proven skills in designing and integrating LLM-based functionalities (classification, extraction, summarization, action orchestration); * Strong experience with embedding and retrieval pipelines (RAG, semantic search) and vector databases; * Strong experience building and maintaining robust production-grade data pipelines for training and evaluation; * Practical experience with inference runtime environments (e.g., ONNX Runtime, TensorFlow Lite) and optimizing model deployment across various hardware types (CPU, GPU, NPU, DSP), including resource-constrained/embedded systems; * Proficiency in defining evaluation metrics and quality criteria for LLM behavior, along with model calibration and analysis of the accuracy-latency trade-off; * Solid Python knowledge and experience with relevant ML frameworks; * Familiarity with MLOps practices and monitoring; * Fluency in English; * Eligibility to work in Portugal (Portuguese citizen or valid work authorization). What We Offer? * Comprehensive Health Insurance, including dental coverage; * Feedback\&Coffee – regular feedback sessions and a structured Career Progression Model; * Aubay Training Academy, designed for your development: technical and behavioral trainings (in-person and e-learning), Meet\&Techs, Webinars, Mentoring, and Technology Hubs; * Events and Teambuildings that strengthen team spirit and foster closeness; * Digital mental health and emotional well-being platform; * Health and well-being program, featuring workshops and initiatives for our employees and other community-oriented activities; * We grow with you and your family – we offer a Mini\-Aubilous Kit upon the birth of your children and annual support for school supplies, from preschool through higher education; * Language platform offering conversational classes in 12 languages; Work Model: Hybrid in Portugal. * What Makes Us Different? * Our organizational culture is built on strong values: commitment, excellence, teamwork, well-being and happiness, and empathy; * We value and recognize those who are part of our story, with referral awards and a special birthday gift; * We believe in authenticity: no dress code, because talent and attitude matter most; * We promote closeness and an informal environment; * Here, you will grow in good company, because we believe professional growth also means sharing experiences and building relationships.