AI Data Scientist & Engineer: LLMs, RAG, Agentic AI

Decskill; Lisboa; On-site; EUR 55,000 - 75,000; Full time

Job summary

Decskill, founded in 2014 as an IT Consulting Company, values its people and focuses on delivering value through knowledge and talent. With offices in Lisbon, Decskill operates across three core areas: Talent, Boost and Connect, driving digital transformation and innovation for clients.

We are seeking a Data Scientist - AI Engineer to design and deploy AI solutions, fine-tune LLMs, and enhance model efficiency.

Qualifications

• Bachelor's or master's degree in computer science, Data Science, Machine Learning, or a related field.
• 3+ years of hands-on experience in machine learning and AI development.
• Strong experience in developing and deploying agentic solutions.
• Experience with open-source and commercial LLMs.
• Proficiency in implementing Retrieval-Augmented Generation (RAG) techniques.
• Experience with vector databases.
• Advanced programming skills in Python with frameworks like TensorFlow, PyTorch, and Hugging Face.
• Deep understanding of NLP techniques and architectures.
• Practical experience with traditional AI/ML methods such as decision trees, SVMs, clustering and neural networks.
• Familiarity with cloud platforms (GCP, AWS, or Azure) for AI/ML deployments.
• Knowledge of MLOps practices and tools.
• Strong problem-solving and analytical skills.
• Effective communication in public and teamwork skills.
• Fluency in English (C1 level or higher) is mandatory.
• Willingness to learn French.

Responsibilities

• Design & Deploy: Create machine learning models and tailored 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 Agentic AI Solutions: Good knowledge in Agent Harness (Memory, storage, state, file system, ...), MCP servers (tools, servers, gateways, protocols, ...), and Agentic Communication Protocols (A2A, ACP, ...);
• 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.

Job description

Decskill, founded in 2014 as an IT Consulting Company, values its people and focuses on delivering value through knowledge and talent. With offices in Lisbon, Decskill operates across three core areas: Talent, Boost and Connect, driving digital transformation and innovation for clients.

We are seeking a Data Scientist - AI Engineer to design and deploy AI solutions, fine-tune LLMs, and enhance model efficiency.