Ulyssean
Entrepreneur First '25London, GB · Founded 2025 · 1 employees on LinkedIn · 2 known investors
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Ulyssean develops both software and hardware for security and verification in large-scale AI compute clusters. Its work targets mission-critical operations inside AI data centers.
Also known as Ulyssean
Founders & leadership
Ulyssean was founded in 2025 by Jacob Lagerros.
Investors · 2
Company profile
researched Aug 2026Ulyssean develops software and hardware aimed at security and verification for large AI compute clusters, positioning its products around mission-critical operations inside AI data centers. Public descriptions frame the company's focus as building security for what it calls the buildout of AGI data centers, based on the thesis that most of the world's AGI compute has not yet been constructed and that current conditions offer a window to influence how it is built.
The technical scope described by the company spans machine learning, cryptography, FPGAs, formal verification and side-channel analysis. Specific work referenced includes decapping accelerators, improving open-source FPGA tooling, and formally verifying its stack. The company describes itself as a small, vertically integrated engineering and research team.
Traction
No revenue, customer or usage metrics are disclosed in the available sources. The company states it is backed by angel investors from Anthropic, Meta and DeepMind, and directory listings name Entrepreneurs First, Long Journey Ventures, Safe Artificial Intelligence Fund and Transpose Platform Management as investors.
Latest developments
In June 2025 Ulyssean sponsored Crowd Supply's Teardown 2025 hardware event and ran an open call for Founding Members of Technical Staff, with a stated expression-of-interest deadline of July 13 and advertised compensation of $200,000-$500,000 per year plus equity for founding members.
▸Full profile — market position, technology, go-to-market, geography, history
Market position
Categorized as an AI startup at the seed stage on a London startup directory; no market share or comparative data available in the sources.
The company describes a vertically integrated, non-bureaucratic team combining hardware-level work (accelerator decapping, FPGA tooling) with formal verification and cryptography, applied specifically to AI data center infrastructure.
Technology
Work described spans machine learning, cryptography, FPGAs, formal verification and side-channel analysis, including decapping accelerators, contributing to open-source FPGA tooling, and formal verification of the company's full stack.
Go-to-market
Sources indicate a focus on AI data centers and large-scale AI compute clusters; no named customers are disclosed.
Geography
Listed with a London office at the Senna Building, Shoreditch Exchange, Gorsuch Place, London E2 8JF, and referenced as San Francisco, CA on a 2025 event sponsorship listing, where in-person technical staff roles were based.
History
Founded in 2025 and listed in the Entrepreneurs First portfolio. By mid-2025 the company was sponsoring the Crowd Supply Teardown 2025 hardware event and recruiting founding members of technical staff in San Francisco.
Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Timeline · 1
launches, deals, and filingsUlyssean was listed as a sponsor of Teardown 2025, a hardware event run by Crowd Supply, and used the sponsorship page to recruit Founding Members of Technical Staff in San Francisco.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 8
primary sources listed
- Ulyssean | Portfolio | Entrepreneurs Firstjoinef.com · web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Ulyssean do?
- Ulyssean builds software and hardware to secure and verify large-scale AI data center compute.
- Who founded Ulyssean?
- Ulyssean was founded by Jacob Lagerros in 2025.
- Who are Ulyssean's investors?
- Ulyssean's investors include Entrepreneur First, Samos Investments.
- Where is Ulyssean headquartered?
- Ulyssean is headquartered in London, GB.