Full-Stack Engineer

Sidian is building the company brain for engineering firms. As a Full-Stack Engineer, you will own product development across the stack with a primary focus on backend architecture and agent orchestration.

What you will own

• Build production Python and TypeScript services, APIs, data models, authentication, queues, and enterprise integrations.
• Orchestrate LangChain and LangGraph agents, tools, retrieval, structured outputs, memory, evaluation, and human-in-the-loop controls.
• Own full-stack features from database design through React interfaces, testing, deployment, and monitoring.
• Connect BIM, drawings, spreadsheets, databases, cloud drives, and third-party systems.

What you bring

• One to three years shipping production software, primarily as a backend engineer.
• Strong TypeScript and Python, practical React, and sound software fundamentals.
• Production experience with APIs, SQL, cloud infrastructure, background jobs, testing, and observability.
• Hands-on experience with LangChain, LangGraph, RAG, tool calling, or similar LLM systems.
• Evidence of initiative through a startup, product, open-source project, or independent production build.
• High agency, urgency, and ownership. AEC experience is not required.

This is a full-time, hybrid role in Waterloo, Ontario.