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Data Scientist / Llm Engineer (M/F/D) (M/F)

HAYS

24.06.2025 | Grande Lisboa | Referência: 2287431


  PARTILHAR






Descrição da Função

The Company Will Work For 
This company, based in Lisbon, Portugal, is a leader in the fields of information technology, aerospace, defense, and security. Operates in several countries, including the United Kingdom, the United States, and France. In addition to their technological innovations, they provide real-time intelligence services, leveraging AI and machine learning to deliver actionable insights for defense and security operations. 

Your New Mission
  • Develop and implement cutting-edge algorithms and models tailored to the domain of large language models (LLMs). 
  • Create advanced AI-driven functionalities in areas such as decision-making support, mission planning, and workflow automation. 
  • Train large-scale language models on extensive text corpora, focusing on optimising performance, accuracy, and efficiency. 
  • Execute preprocessing tasks including tokenization, stemming, lemmatisation, and normalization to ensure high-quality training and evaluation datasets. 
  • Continuously explore emerging trends and breakthroughs in NLP and LLMs, integrating novel methods to enhance current models and develop innovative solutions. 
  • Partner with data engineers, software developers, product managers, and other stakeholders to gather requirements and deliver impactful AI solutions.
  • Assess model performance using relevant metrics and evaluation techniques, iterating to refine accuracy and computational efficiency.
  • Work alongside engineering teams to deploy models in production environments, ensuring they are scalable, reliable, and maintainable.
  • Maintain detailed documentation of models, algorithms, workflows, and processes to support reproducibility and future development.
What You Need To Succeed 
  • A Bachelor’s or Master’s degree in Computer Science, Data Science, or a closely related discipline is required. A Ph.D. is considered an advantage. 
  • Minimum of 3 years of hands-on experience in data science, particularly in natural language processing (NLP) and large language models (LLMs).
  • Proficient in Python, with solid experience using NLP tools and frameworks such as NLTK, spaCy, Hugging Face Transformers, GPT-3/GPT-4, and LLaMA.
  • Skilled in machine learning libraries including TensorFlow, TensorRT, PyTorch, and Keras.
  • Strong background in data preprocessing and preparation techniques.
  • In-depth understanding of deep learning models for NLP, including transformers, RNNs, and CNNs.
  • Proven experience in training and fine-tuning LLMs, as well as developing Retrieval-Augmented Generation (RAG) systems.
  • Comfortable working with experimentation tools like Jupyter Notebooks.
  • Familiar with cloud computing platforms (e.g., AWS, Azure, Google Cloud), with a preference for Google Cloud’s AI services.
  • Experience deploying self-hosted large language models.
  • Basic understanding of DevOps practices and tools, including GIT, CI/CD pipelines, telemetry, and monitoring.
  • Exceptional problem-solving and analytical thinking skills, with a talent for crafting innovative solutions to complex challenges. 
  • Familiarity with AI ethics, fairness, and bias mitigation strategies, especially in the context of NLP and LLMs.
  • Excellent written and verbal communication abilities, capable of conveying complex technical ideas to non-technical audiences. 
  • Fluent in both Portuguese and English, with demonstrated C2-level proficiency in each.
  • Strong team player with the ability to work effectively in cross-functional and collaborative environments. 
  • Meticulous attention to detail, ensuring high standards of accuracy and quality in all deliverables. 
  • Thrives in fast-paced, evolving environments and capable of managing multiple projects concurrently. 

What The Company Can Offer You 
  • An excellent work environment and an opportunity to create a real impact in the world;
  • A truly high-tech, state-of-the-art engineering company with flat structure and no politics;
  • Working with the very latest technologies in Data & AI, including Edge AI, Swarming - both within our software platforms and within our embedded on-board systems;
  • Flexible work arrangements;
  • Professional development opportunities;
  • Collaborative and inclusive work environment;
  • Salary compatible with the level of proven experience.

Next Steps 
If you are interested in this opportunity, please send us your updated CV. If you are looking for a different type of professional challenge, contact us to discuss other career opportunities, always in complete confidentiality.


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