Data Scientist/ML Engineer

About KLx

KLx is the Portuguese subsidiary of Crédit Agricole S.A., a large international banking group that provides IT Skills & Software Development services to the IT organizations within the group's business lines. Our mission is to assist with the IT transformation & activities of a worldwide bank capitalizing on all the skills from our international campus in Lisbon.

About Responsibilities

At KLx's Expertise Development pole, you'll be leading the charge in AI and Machine Learning innovation. You'll team up with our community of experts in Data Science, AI, and Product Development."

Reporting to our CTO, your main missions will be:

• Design & Deploy: Create machine learning models and AI solutions.
• Innovate: Fine-tune and extend Large Language Models (LLMs) including open-source and commercial models.
• Optimize: Implement Retrieval-Augmented Generation (RAG) techniques for enhanced model efficiency.
• Analyze: Perform exploratory data analysis and feature engineering to unlock better model performance.
• Build Generative AI: Develop cutting-edge models for content creation, process automation, and innovation.
• Apply Traditional ML: Utilize decision trees, SVMs, neural networks, and more to solve diverse problems.
• Collaborate: Work alongside data engineers, product managers, and stakeholders.
• Quality Assurance: Ensure high-quality AI solutions through rigorous testing and validation.
• Document & Share: Maintain technical documentation for knowledge sharing and reproducibility.

About You

• Bachelor’s or Master’s in Computer Science, Data Science, Machine Learning, or similar.
• 3+ years of experience in machine learning and AI development.
• Skilled in Generative AI, including model training, fine-tuning, and deployment.
• Experience with both open-source and commercial large language models (LLMs).
• Proficient in Python with frameworks like TensorFlow, PyTorch, and Hugging Face.
• Solid understanding of Natural Language Processing (NLP) techniques.
• Familiar with traditional AI/ML methods like decision trees, SVMs, and neural networks.
• Experience with cloud platforms (AWS, GCP, or Azure) for AI/ML deployments.
• Strong problem-solving, analytical skills, and effective communication.
• Fluent in English; French is a plus.

Nice-to-Have Skills:

• Knowledge of reinforcement learning from human feedback (RLHF).
• Familiarity with prompt engineering.
• Understanding of ethical AI principles and model interpretability.

What We Offer

• Competitive Salary + Bonus + Flex Benefits + Health Insurance;
• Hybrid working model, allowing you to combine onsite and offsite work;
• Open Space with a lovely location next to Tejo, 5 minutes’ walk from Metro and Train Station, 15 minutes’ drive from Humberto Delgado’s airport;
• Canteen facilities (Breakfast + Lunch);
• Parking upon request (option to charge electrical cars);
• Free coffee, hot chocolate and fruits.
• Training (Hard and Soft Skills);
• International environment with more than 15 nationalities.
• A people oriented and friendly working environment