Built Robotics, a developer of technology that transforms construction equipment into fully autonomous robots, has announced the close of a $33 million Series B.

Existing equipment from any manufacturer can be equipped with Built Robotics’ automated guidance systems, while still maintaining the ability to have complete manual operation. The upgraded equipment can perform a variety of tasks fully autonomously including digging trenches, excavating foundations, and grading building pads.

A web-based platform manages the autonomous fleet, which allows the robots to be supervised by remote equipment operators.

“The shortage of qualified labor is an industry-wide challenge right now, and finding skilled workers is even more difficult on large-scale remote infrastructure projects. Our robotic equipment is able to shoulder some of the load by assisting with basic, repetitive tasks, freeing up human operators to focus on more complex activities,” explains Noah Ready-Campbell, CEO of Built Robotics.

Built has also announced over $100 million in customer commitments for its autonomous construction technologies.

The current fleet of Built robots has excavated 100,000 tons of material on projects such as wind farms, housing developments, and utility solar installations.

In total, equipment that has been upgraded by Built Robotics has operated for more than 7,500 hours with a perfect safety record, which the company says is equivalent to 350,000 miles of testing for self-driving cars.