Company · Tech City LLC · Chester, Virginia
A small company and one large question.
Sigmastead is built by Tech City LLC, a veteran-owned company in Chester, Virginia. The question: can a person see their own life whole, on their own terms, and act on it—without handing that life to anyone else?
- Legal entity
- Tech City LLC
- Formed
- 7 December 2020
- Location
- Chester, Virginia, United States
- Ownership
- Veteran-owned
- Product
- Sigmastead — a product of Tech City LLC and a user-controlled personal data platform in private, synthetic-only development
- Contact
- tremayne@sigmastead.com
Every service holds a piece of your life well enough for its own purposes and no further.
Your health data answers health questions. Your calendar answers calendar questions. The question that spans them has nowhere to live. That looks like a product gap rather than a law of nature.
Closing it means bringing selected data into one place a person controls, making relationships across it visible, and letting the person decide what any of it is used for or shared with. The larger purpose is to help a person privately collect the data they produce, understand it across the domains of their life, act on their goals, selectively share it, and eventually receive value from it on terms they control.
Whether Sigmastead closes the gap is not settled. What is settled is how it will be described while it is being built: in the present tense only for things that are true.
Small enough to answer directly.
Tech City LLC is a single-founder, veteran-owned company in Chester, Virginia. At this stage, questions about the product, its evidence, and its limits reach the person responsible for building it.
Founder-led · evidence before claims · expertise added deliberately
Status, stated out loud.
Evidence before claims
Every capability on this site is built, partially built, being validated, designed, or later—and labeled that way. Synthetic evidence is never described as customer or production proof.
Boring infrastructure
Managed services and no bespoke cryptography. Novelty belongs in the thesis, not in the parts that must not fail.
Decide, then claim
Custody, portability, and erasure are not marketing surface. When they are designed to a standard worth defending and shown to work, they are described here—and not before.
Bold, not breathless. Human, not sentimental. Precise, not clinical. Protective, not fear-driven. Ambitious, not fictional.
Private. Synthetic. Early.
There is no public product, no waitlist you have been added to, and no customer data in existence, because there are no customers. A development application is hosted separately from this site and runs on synthetic data only. The dated account of what is built, what is designed, and what has not been decided is on the status page.
Aligned people, early.
Prospective alpha participants with a real goal and scattered data. Partners with an adapter, an application, or a research question. Funders for whom data rights, personal AI, or privacy infrastructure is a thesis. Technical reviewers who want straight answers about the architecture.