Sitehop, the UK-based post-quantum cybersecurity specialist, has opened a US office in Virginia, Arlington, close to the nation’s military and industrial establishment.

The move is being spearheaded by co-founder and CEO Melissa Chambers, a Mississippi-born former NASA engineer and entrepreneur, the daughter of a USAF electrician.

It comes after Sitehop’s encryption hardware was installed at key sites in Silicon Valley, close to hyperscalers, and Northern Virginia, a hub for the US defence and security sector.

Sitehop has joined Virtus Innovation Center in National Landing, near to the Pentagon and surrounded by defence, government, technology, academic and investment institutions.

Virtus brings together organisations across that community, with connections to groups including hyperscaler AWS, venture capital network VC in DC, university Virginia Tech, strategic investor IQT, Defense Advanced Research Projects Agency (DARPA), geopolitics consultancy WestExec Advisors and the wider National Innovation Quarter ecosystem.

Melissa has been an active presence at industry events since relocating, including Deep Tech Week’s DC Startup Crawl and the 17th Annual Billington CyberSecurity Summit in Washington DC.

She said: “We’ve proved that we can build relationships, win customers and deploy technology in the US from across the Atlantic. Being on the ground means we can do it faster, build deeper relationships and be closer to the people and programmes we want to support.”

Co-founder and CTO Ben Harper, who built his career in defence and intelligence technology at a leading defence prime contractor, added: “We have spent the last few years proving our hardware encryption and high performance post quantum cryptography in demanding telecom and high assurance environments. Now we are building a real presence in the US as we increase our focus on defence, national security and critical infrastructure.”

The company’s sovereign technology takes a different approach to incumbent software-defined wide area network (SD-WAN) products that have become embedded across defence and enterprise networks and is built on reprogrammable hardware rather than a software stack.

Sitehop’s track record includes deployment with a tier-one global telecommunications provider across seven countries, development of the world’s smallest post-quantum encryption device to protect operational technology networks and becoming the first external company admitted to BT’s flagship test facility at Adastral Park, one of the most advanced telecoms testing grounds in Europe.

Notes to Editors:

Sitehop delivers the world’s fastest hardware-enforced, quantum-resistant encryption. As cybersecurity evolves with AI and quantum threats, traditional encryption is struggling to keep pace. Sitehop’s FPGA-powered, crypto-agile solutions deliver unmatched sub-microsecond latency, securing data instantly and proactively so networks stay protected before threats appear.

The World Economic Forum selected Sitehop for its 2026 Technology Pioneers community, bringing together 100 of the world’s most promising early-stage companies with the potential to reshape industries and address global challenges.

For more information, please visit www.sitehop.com