Sidian is building the company brain for engineering firms. As Lead AI/ML Engineer, you will build the models that make that brain think: vision systems that read structural drawings, graph neural networks that reason over building systems, and fine-tuned language models that understand engineering intent.

What you will own
Build GNN systems for link prediction, classification, and reasoning over connected engineering data.
Fine-tune foundation models using LoRA, QLoRA, PEFT, instruction tuning, and rigorous evaluation.
Design graph algorithms for search, routing, and recommendation.
Own data curation, training infrastructure, experiment tracking, inference optimization, and production monitoring.
Turn customer workflows into dependable products.





What you bring
Solid Python, deep learning fundamentals, and end-to-end PyTorch training experience.
Experience with CNNs, computer vision, GNNs, and geometric deep learning using PyTorch Geometric, DGL, or equivalent.
Practical experience fine-tuning and rigorously evaluating language models.
High agency, product judgment, and transparent communication. AEC experience is not required.
A master's education is helpful but not required.

This is a full time, hybrid role in Waterloo, Ontario.
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📌 Lead Ai/ml Engineer London (Canada)
🏢 Sidian
📍 Canada