Joel Anderson

A rifle that thinks fast enough to catch a drone

Joel Anderson runs ZeroMark, a defense-technology company in New York with a narrow, urgent job: make it possible for a single soldier, holding a standard-issue rifle, to shoot a small drone out of the sky on the first try. The product is a fire control system - a sensor pod about the size of three iPhones stacked together, paired with a motorized buttstock or foregrip that nudges the muzzle a few degrees at the moment of the shot. Computer vision watches the drone, ballistics math predicts where it will be, and the hardware corrects the aim faster than a human wrist ever could.

The reason that matters comes down to physics. A quadcopter is small, cheap, and quick. By the time a bullet travels out to a drone at range, Anderson has explained, the target can be dozens of feet past where the shooter aimed - "72 feet past the aiming spot in ideal conditions." No amount of training fully closes that gap. Software can. ZeroMark's pitch, which investors and press have shorthand-labeled a "handheld Iron Dome," is that the interdiction tool a soldier needs is already in their hands. It just needs to aim itself.

That framing is not a throwaway line. Anderson has been unusually direct in public about where he will and will not take the technology. Asked about broader deployment, he has said plainly: "I don't think the world is ready for that, nor am I for that matter. I don't want police to have AI weapons." ZeroMark, in his telling, is defensive - built to answer autonomous threats, not to automate offense. In an industry that often blurs that line, he keeps drawing it out loud.

The Tesla drive that started it

The origin story is small and specific. Anderson was driving his Tesla, running Full Self-Driving Beta, to a shooting range. The car was reading the road, tracking objects, and reacting in milliseconds. Then he thought about the soldier at the range with a rifle, working entirely off human reflex and eyesight. The consumer machine in his driveway could aim and track better than the tools handed to people whose lives depend on precision. He has called it an epiphany. The gap between what a Tesla could do and what a dismounted soldier could do became the whole thesis of the company.

He built an early prototype himself and took it to Katherine Boyle and David Ulevitch, partners on Andreessen Horowitz's American Dynamism fund, the arm of the firm focused on defense, aerospace, and national interest. They asked to see more. In September 2022, Anderson formally founded ZeroMark. By May 2024 the company announced a $7 million seed round led by Ground Up Ventures and a16z, alongside angels and smaller funds - and stepped out of stealth with the "handheld Iron Dome" label attached.

Before ZeroMark: Navy, then databases

Anderson's path to defense hardware did not run through a weapons lab. He enlisted in the U.S. Navy straight out of high school, then moved into the private sector and into software. Before founding ZeroMark he spent years at MongoDB, the database company, in senior technical and security roles - including VP of Technical Operations and a stint as interim Chief Information Security Officer - through a period of steep growth as the business scaled toward and past a billion dollars in revenue. Running security and technical operations at a fast-scaling public-market company is a very different job than aiming a rifle at a quadcopter. What carries over is the instinct for systems that have to work under real pressure, on real deadlines, with lives or livelihoods on the line.

That sentence is close to a mission statement. ZeroMark's whole design philosophy keeps the human in the loop and makes the human better, rather than replacing them with an autonomous turret. The soldier still decides. The machine just makes the shot land. It is a deliberately human-centered stance in a field racing toward automation, and Anderson repeats it often enough that it reads as a genuine conviction rather than marketing.

The drone era catches up to the pitch

By late 2024, the abstract threat ZeroMark was built for had become front-page news. A wave of unexplained drone sightings over parts of the United States put counter-drone capability into the national conversation, and Anderson became one of the people reporters called. He appeared on CNN and was quoted by Newsweek, and his message was blunt: the standard tools agencies reach for do not always work. "Jammers and spoofers and microwaves don't work against drones that are hardened," he warned - noting that operators can shield a drone with something as simple as copper tape to defeat microwave systems.

His larger point was about a gap in response. "We lack the kinetic responses necessary with our law enforcement and federal agencies," he said, "and that, I think, is a really scary undertone to this whole drone mystery." The Department of Defense has kinetic options; local agencies, largely, do not. ZeroMark's bet is that the cheapest, most scalable kinetic answer is an old one made smart - a bullet, aimed by a computer, fired from a weapon a person already knows how to carry.

The commercial traction has followed the threat. ZeroMark's system has been put in front of special mission units in several countries, the company has been in conversation with the U.S. Department of Defense, and it has been discussed as a candidate for export to Ukraine, where cheap drones have reshaped the battlefield. It remains a small team - on the order of 15 people - working on a hard problem with outsized stakes, and it raised additional funding in late 2025 as demand for counter-UAS technology climbed. For a company built on a driveway epiphany two years earlier, the world moved toward the idea remarkably fast.

In his own words