Senior Data Scientist | Generative AI & NLP

We are growing. And we are looking for talented people.At Decskill, we believe that technological excellence is driven by human talent.We are an IT consulting company with more than 10 years of consolidated experience in the market, focused on building long-term relationships with both our clients and our people. Today, we are a community of over 800 professionals, working from Lisbon, Porto, and Madrid, contributing to impactful technology initiatives.As part of the Astek Group, we combine a strong local culture with a global presence, being active in around 23 countries across 4 continents. This allows us to offer an international context, diverse challenges, and long-term career opportunities, while staying close to our teams.We are looking for a Senior Data Scientist – Generative AI & NLP!

Responsibilities

Contribute to AI and Data Science projects, with a focus on Natural Language Processing (NLP), Generative AI and core data science activities.Design and implement end-to-end data science and machine learning solutions, covering data understanding, preparation, modelling, evaluation and deployment.Perform exploratory data analysis (EDA) to identify patterns, extract insights and support data-driven decision-making.Develop, train and evaluate machine learning models using Python and industry-standard frameworks.Implement data preparation and transformation processes to ensure data quality and reliability.Design and develop solutions using Large Language Models (LLMs), Retrieval-Augmented Generation (RAG) and prompt engineering techniques.Leverage Generative AI technologies and platforms, such as OpenAI and AWS Bedrock, to develop AI-powered solutions.Work with cloud infrastructure to support the development, deployment and scalability of AI and machine learning applications.Apply software engineering best practices to ensure code quality, maintainability and reliability.Collaborate with multidisciplinary teams to deliver innovative AI solutions aligned with business and technical requirements.

Requirements

At least 5 years of professional experience in Data Science and Machine Learning projects.Proven experience delivering end-to-end data science and machine learning initiatives, from data understanding and preparation to modelling, evaluation and deployment.Strong knowledge of data science concepts and principles, particularly exploratory data analysis (EDA), modelling and model evaluation.Strong programming skills in Python.Professional experience with industry-standard data science and machine learning frameworks, such as scikit-learn, PyTorch, Keras, OpenCV and pandas.Experience in data preparation and transformation using tools and technologies such as SQL and pandas.Professional experience with cloud infrastructure; AWS experience is highly preferred.Hands-on experience with Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), prompt engineering and Generative AI technologies, such as OpenAI and AWS Bedrock.Experience with MLOps solutions, such as MLflow and Databricks, is highly valued.Knowledge of software engineering best practices and tools, including Git, CI/CD pipelines and unit testing, is highly valued.Strong analytical and problem-solving skills, with the ability to translate complex data into actionable insights.Excellent communication skills and the ability to collaborate effectively with technical teams.Fluency in English, both written and spoken, is mandatory.Are you looking for an environment that values curiosity and commitment? Here, your contribution has real impact and individual growth is taken seriously.Find with us the right opportunity to grow!What you can expect from us:Long-term projects with national and international context (if applicable).Opportunities to grow technically and professionally.A people-first culture, focused on transparency and trust.Teams that value ownership, collaboration and stability.If you’re interested in this opportunity, please send your CV to cesaltina.abreu@decskill.com, with the reference “CA/AIDataScientist”.Thank you! :)Decskill is committed to equality and non-discrimination with all our talents. We recruit and promote talent based on diversity and inclusion, regardless of age, gender, ethnicity, race, nationality or any other form of discrimination incompatible with the dignity of the human being.