Founding AI Engineer: Construction Agent Platform

Field24; Toronto; On-site; CAD 110,000 - 160,000; Full time

Job summary

Field24 is seeking its first founding engineer to join in Toronto and build an AI agent platform for construction. You’ll work in person at our Toronto office, owning features end to end—from harness to the customer web app—and turn loosely defined problems into concrete, shippable solutions.

You’ll collaborate with customers, shape product direction, and help establish our early engineering culture, processes, and quality standards. This role requires initiative and a passion for practical AI.

Qualifications

• 2+ years of software engineering experience.
• Highly motivated self-starter.
• Experience building AI agents, skills, and tools.
• You use AI heavily, and you still own the judgment and the quality of what ships.
• Strong problem solving and clear communication.
• Customer-focused; you care whether what you build helps people.

Responsibilities

• Build and extend the agent harness, including tools, skills, and how the agent reasons over construction workflows.
• Ship features across the whole stack: the harness, evals, infra, sandboxes, and the web app.
• Turn rough problems into a clear scope, then deliver them.
• Help shape the product, tech, and the culture; early engineers set how we build and work together.

Skills

Software engineering

Self-starter

AI agents

AI tooling

Problem solving

Communication

Customer focus

Tools

TypeScript

React

Job description

Field24 is seeking its first founding engineer to join in Toronto and build an AI agent platform for construction. You’ll work in person at our Toronto office, owning features end to end—from harness to the customer web app—and turn loosely defined problems into concrete, shippable solutions.

You’ll collaborate with customers, shape product direction, and help establish our early engineering culture, processes, and quality standards. This role requires initiative and a passion for practical AI.