AI/ML Engineer

🚀 #WEAREALTIA

ALTIA is a multidisciplinary team focused on delivering advanced data-driven solutions that generate measurable impact and enable smarter decision-making. Working across international environments, we combine analytics, artificial intelligence, and business expertise to transform data into strategic value. Our mission is to help organizations evolve through innovation, scalable data platforms, and high-quality analytical solutions, fostering continuous learning, collaboration, and technological excellence.

We are looking for a Data Scientist & AI Specialist with strong expertise in machine learning, Natural Language Processing (NLP), generative AI (LLMs/RAG), and data engineering pipelines applied to environmental footprints, life-cycle assessment (LCA), and sustainability analytics to join our team in international digital transformation and scientific data management initiatives.

The role involves designing, training, and deploying ML, NLP, and generative AI models (including local/API-based LLMs, LangChain, LlamaIndex, and Retrieval-Augmented Generation / RAG). The specialist will build and optimize scalable data pipelines to process, clean, validate, and convert heterogeneous datasets, such as official statistics, trade data, and life-cycle inventory (LCI) databases. Additionally, the candidate will focus on implementing advanced time-series forecasting, nowcasting, and data-imputation techniques to fill missing data gaps, establishing automated anomaly detection, and ensuring strict compliance with the EU AI Act, GDPR, and AI safety principles (transparency, bias mitigation, and explainability).

In close collaboration with scientific project leads, policy officers, and technical engineering teams, the specialist will translate complex environmental and business needs into working prototypes and technical specifications. The position requires deep expertise in Python (pandas, NumPy, SciPy, scikit-learn, PyTorch, TensorFlow), relational databases (PostgreSQL/SQL), GPU optimization, containerization, and reproducible model packaging using Git and Docker.

⭐ WHAT WE HAVE FOR YOU?

🚩 Remote work model (far-site delivery with occasional presence in European locations if required).

⏰ Flexible working hours.

📈 Long-term stable position with executive-level professional growth opportunities.

🚀 Continuous learning and upskilling in cutting-edge Generative AI, RAG architectures, MLOps, and sustainability analytics.

💪 Integration into an experienced, highly skilled, and collaborative international team.

💣 Participation in high-impact international digital and AI projects.

💙 Inclusive and innovation-driven work environment.

REQUIREMENTS:

Educational level & Experience:

• EQF Level 7 (Master's degree or 5 years of higher education).
• Minimum 5 years of professional IT experience.
• Minimum 5 years of hands-on experience in Python for data processing and analysis (pandas, NumPy, SciPy, etc.).
• Minimum 5 years of experience developing ML/AI models and applications (scikit-learn, TensorFlow, PyTorch, Hugging Face, etc.).
• Minimum 2 years of specific experience in identifying, converting, updating, and assessing the quality of datasets for Life-Cycle Assessment (LCA) or environmental footprint modeling (Product Environmental Footprint / PEF, Organisation Environmental Footprint / OEF).

Languages:

• Minimum B2 level in English (spoken and written).

TECHNICAL & FUNCTIONAL EXPERIENCE:

• AI & Machine Learning: Supervised/unsupervised algorithms (SVM, Neural Networks, Decision Forests, k-NN), NLP (SpaCy, NLTK), feature selection, classifier optimization, and model interpretability.
• Generative AI & RAG: Large Language Models (LLMs), small language models, generative AI APIs, Retrieval-Augmented Generation (RAG) architectures, and orchestration using LangChain, LlamaIndex, and Hugging Face.
• Advanced Analytics & Data Imputation: Time series analysis, forecasting, nowcasting, statistical testing, and gap-filling techniques for incomplete datasets.
• Environmental & Sustainability Modeling: Processing heterogeneous trade, production, consumption, and LCI/LCIA data models, environmental indicators, and supply chain footprints.
• Data Quality & Governance: Data cleansing, verification, automated anomaly detection, data freshness/accuracy, metadata, master data management, bias mitigation, and compliance with the EU AI Act & GDPR.
• MLOps & Architecture: Technical architecture design, parallel processing, GPU usage, containerization, version control (Git), dependency management, and reproducible pipelines.

TECHNOLOGIES & SKILLS:

• Programming & Libraries: Python (pandas, NumPy, SciPy, Matplotlib, Seaborn, Plotly), R, SQL.
• ML/AI Frameworks: Scikit-learn, TensorFlow, PyTorch, Hugging Face, SpaCy, NLTK, LangChain, LlamaIndex.
• Databases & Storage: PostgreSQL, relational databases, data lake/lakehouse concepts.
• DevOps & Tools: Git, Docker/containers, REST APIs, GPU acceleration.
• Soft Skills: Excellent ability to translate scientific/policy requirements into technical solutions, clear documentation and presentation skills for non-technical stakeholders, results-oriented mindset, and strong teamwork.

NICE TO HAVE:

• Working knowledge of French as an additional asset.

This job offer has been drafted taking into account impartiality and non-discrimination based on gender, race, ideology, or any other reason, in accordance with applicable equality regulations.