Senior Data Scientist (AI)

TL;DR

Senior Data Scientist (AI): Building and architecting production-level data solutions with an accent on statistics, experimental design, and causal inference. Focus on developing and scaling complex ML/DL models for production environments, optimizing model training and scoring.

Location: Hybrid, 2 times a week in the Lisbon office. Requires Portuguese or other EU citizenship, or a valid Portuguese work permit.

Company

hirify.global focuses on finding the perfect match between Rhinos (candidates) and their clients.

What you will do

• Build and architect production-level data solutions.
• Develop and scale complex ML/DL models for production environments.
• Optimize model training and scoring using big-data platforms (Spark, Databricks).
• Leverage cloud-based ML platforms such as Azure ML, SageMaker, or Vertex AI.

Requirements

• Degree in Mathematics, Computer Science, Machine Learning, or a related field.
• At least 5 years of professional experience in data science environments.
• Advanced Python for ML/DL (NumPy, pandas, scikit-learn, PyTorch/TensorFlow).
• Strong background in statistics, experimental design, and causal inference.
• Proficiency in ML experimentation and tracking tools (MLflow, W&B, Databricks ML).
• Advanced SQL expertise for large-scale data manipulation and workloads.
• Deep understanding of MLOps workflows (model registry, deployment, monitoring, drift management, retraining).
• English proficiency (minimum B2 level).
• Availability for a hybrid work model, 2 times a week in the Lisbon office (requires Portuguese or other EU citizenship, or a valid Portuguese work permit).

Culture & Benefits

• Access to a network of national and international partners across diverse sectors of the tech industry.
• Health insurance.
• Coverflex meal card.
• Opportunities for career progression.
• Personalized support with a career coach.