Sales Engineer Internship Hybrid NY; Toronto, Canada

Mason - Accelerating development of the built world

Mason is on a mission to accelerate the development of the built world. We are tackling some of the most pressing challenges of our time - housing shortages, energy constraints, and decaying infrastructure - all of which are exacerbated by the slow pace of physical development.

This is one of the largest, least-modernized markets in the world. Trillions in spending, almost no real software.

We create AI employees that speed up the development of large projects for some of the largest REITs, institutional developers, and asset managers in North America.

Our founding team comprises of a repeat founder that exited to a Fortune 500
, a previous tech lead at Meta Super Intelligence
, and a development director that built $2B+ of projects
.

We combine expert services with AI agents so teams can move faster, eliminate errors, and scale with precision.

You’ll sit at the intersection of building and selling. Half the job is getting in front of the firms who need what we’re building; the other half is building agents, wiring up workflows, and turning our sales motion into something a tiny team can run like a big one.

You don't need to be an engineer. You need to be genuinely curious about AI, willing to build things yourself instead of waiting for someone else to.

• Build AI agents and workflows to automate research, outreach, and pipeline work
• Prototype tooling that lets a tiny team sell like a big one
• Research target accounts and find the right people to talk to
• Build and maintain prospect lists, powered by the agents you create
• Draft and send personalized outreach, increasingly automated by what you build
• Book qualified meetings for the founding team and sit in to learn the craft
• Sit in on demos and translate what customers need into things we can build
• Track what messaging lands and feed insights back to the team

• High ownership, high agency — you own the outcome, not just the task
• Relentless and resourceful; you find a way to the right person
• Strong written and verbal communication
• Genuine curiosity about physical development and how AI is changing the industry
• Coachable and fast-learning; you act on feedback immediately
• Comfortable with rejection and high-volume outreach
• Sales or customer-facing experience is a plus, not a requirement

• CEO is a second-time founder who sold his last company to Coinbase
• CTO is a former Staff Engineer at Meta Superintelligence and founded Meta AI
• COO has led over $2B in real estate development
• Backed by top investors, operators, and even major development firms
• Working directly with teams managing billions in AUM
• Small, intense, low-ego team that genuinely enjoys working together
• Regular board game nights, lots of laughs, no corporate nonsense

If you want to join a team of winners and re-define the built world - let’s talk :)