Senior Data Scientist

We seek an experienced Data Scientist to join a cutting-edge AI team working on scalable, production-ready solutions.

Location : Lisbon or Porto (60% remote / 40% on-site)

Languages required : English (minimum B2)

Responsibilities :

• Develop, fine-tune, and deploy GenAI models using AWS Bedrock, SageMaker, and Lambda
• Work with LLMs, embeddings, transformers, and diffusion models for NLP and image generation
• Optimize prompt engineering, fine-tuning, and RLHF (Reinforcement Learning from Human Feedback) techniques
• Build scalable MLOps pipelines using SageMaker, ECS, and Kubernetes
• Manage large-scale datasets with AWS Glue, Athena, and Redshift
• Implement vector databases (Pinecone, Weaviate, FAISS, Amazon OpenSearch) for RAG (Retrieval-Augmented Generation) systems
• Design and optimize ETL pipelines for AI / ML workflows
• Collaborate with DevOps, Software Engineers, and product teams to deploy AI models into APIs and applications
• Ensure data privacy, compliance, and model security
• Monitor model performance and retraining needs using CloudWatch, MLFlow, and observability tools

Requirements :

Interested candidates should send their CV and rate to or apply directly.