Defense tech startup Picogrid lands $45M to be the neutral integration layer

The Pentagon is acquiring defense hardware faster than it can make any of it communicate. Sensors, autonomous platforms, edge computing systems, electronic warfare payloads, space and undersea equipment are all arriving simultaneously, each speaking its own proprietary language. Picogrid, a six-year-old startup based in El Segundo, California, has secured $45 million to serve as the translator.

The Series A round, announced Thursday under embargo, was led by Bessemer Venture Partners, with Washington Harbour and GSBackers joining existing investors including Initialized Capital, Starburst Ventures, and the Czech fund Credo Ventures. This follows the $12 million seed round the company closed in early 2024, arriving as defense tech funding rounds continue to grow larger.

Picogrid’s core argument is that integration, not invention, now represents the primary constraint on military effectiveness. A force can deploy the best drone and the best radar on the market and still lose precious time trying to connect them into a command network never designed to accept either system.

The company positions itself as the “open integration layer,” a deliberately neutral position. It argues that this layer should be built once for the entire ecosystem rather than rebuilt for each individual mission. That ecosystem now spans more than 100 defense systems from vendors both new and established, including Skydio, Northrop Grumman, Echodyne, CX2, and Neros. The diversity is intentional. A drone manufacturer and a prime contractor rarely design their equipment to work together, and the operator in the field ultimately pays for that gap.

“The systems are getting better, but the seams between them aren’t keeping up,” said Zane Mountcastle, Picogrid’s co-founder and chief executive, who built early autonomous systems as an Army contractor before founding the company. “Operators in the field are paying that tax every day, and our job is to take it off them.”

Mountcastle said the funding will scale production in California, Oklahoma, and elsewhere to meet demand from U. S. forces and allies.

Bessemer’s involvement aligns with the firm’s recent direction. David Cowan, the partner who led the deal, has spent recent years building a defense-tech portfolio that includes Breaker and DEFCON AI, with earlier bets ranging from Rocket Lab to Anthropic.

“As autonomous systems proliferate across every domain, there’s clear demand for an infrastructure layer that’s hardware-agnostic and interoperable,” Cowan said, describing Picogrid as “on a path to become the next integration prime.”

That is a significant claim. The integration primes of the previous era were the system houses that wired their day’s platforms together, and the term carries weight in a procurement world that does not hand it out casually. Picogrid has not disclosed a valuation for the round, nor its headcount or revenue, leaving the distance between connective tissue and prime contractor a matter of trust for now.

What is clear is the direction of the money. European defense-tech funding hit a record last year and has continued climbing in 2025, with the appetite on the U. S. side even broader. Picogrid is betting that the next decade will field more systems, more vendors, and more networks than the old integration model can handle, and that someone neutral will need to hold them all together.