Tessera Systems

Tessera Systems

An independent software company. We design, build and run complete products: web platforms, iPhone and Android apps, and the cloud systems underneath them.

Contact us See our work

What we’ve been building

Products we design, build and operate ourselves, from the data model to the phone in someone’s pocket.

A platform for professionals in the field

Scheduling, dispatch, invoicing, payments and bookkeeping for independent professionals who work on the road, and for the companies that send them work.

  • Every state’s rules kept as cited, tested data that the software enforces
  • Each customer’s data isolated inside the database, with tests that prove it
  • Card and bank payments settle straight to the professional, never through us
  • Orders by email, calendar sync, reminders and receipts

Runs on Web, iPhone, iPad and Android

Apps that work where the work is

Companion apps for the jobs a desk can’t do: they log mileage on their own, take cards at the table, scan documents and ID barcodes, and keep working offline.

  • Native Swift and Kotlin for background location and motion
  • Tap to Pay and Bluetooth card readers
  • Home-screen widgets, shortcuts and live status
  • Offline storage with an upload queue that catches up

Runs on iPhone, iPad and Android

Transparency for community associations

A member platform that makes an association’s budgets, reserve studies, minutes and rules readable, and lets owners ask the documents questions directly.

  • Answers that quote the page they came from
  • Text recognition for decades of scanned records
  • A public directory built from county parcel maps
  • Verified-owner discussion and one-lot, one-vote polls

Runs on Web

Private payments

A wallet built on zero-knowledge cryptography. Proofs are made on the person’s own device, so transfers stay private without trusting a server with keys or history.

  • Proofs generated in WebAssembly, off the main thread
  • Smart contracts reviewed by an outside auditor
  • An open relay network with its own protocol and fees
  • A developer SDK, and mobile apps sharing one Rust core

Runs on Web and mobile

Applied AI

AI where it earns its place: assistants that answer from a body of documents and cite the source, with model judgments kept behind ordinary, testable code.

  • Question answering over documents, with citations
  • Briefings and drafts from a team’s own notes and tickets
  • Structured model output, validated before it’s used
  • Evaluation before anything ships

Runs on Cloud or your own hardware

Also in our wheelhouse

The same skills, pointed at your problem, whether that’s one focused piece or a whole product.

  • Interface design

    Screens that spend space deliberately, with design systems, dark mode and accessibility from the first sketch.

  • Web applications

    Fast, accessible TypeScript products, from the first commit to steady production traffic.

  • Mobile apps

    iPhone, iPad and Android apps in Swift, Kotlin and React Native that use what the device can do.

  • Cloud architecture

    Serverless AWS systems defined as code, with alarms, budgets and backups whose restores are rehearsed.

  • Hosting migrations

    Moving products off costly or locked-in platforms onto infrastructure you own and understand.

  • Payments and billing

    Marketplace payouts, subscriptions, invoices and in-person payments, with records an accountant will accept.

  • Rules as software

    Regulations and policies modeled as cited, testable data, so the product enforces them for you.

  • Document intelligence

    Search and answers across large document sets that quote their sources, plus text recognition for scans.

  • AI for teams

    Internal assistants that draft, summarize and flag risks from your own documents and tools.

  • Private AI

    Choosing, hosting and evaluating open models on your own hardware when data can’t leave.

  • Data and maps

    Public records, registries and map layers joined into clean data, and raw GPS turned into trips that make sense.

  • Security and cryptography

    Tenant isolation, encryption, zero-knowledge proofs and structured reviews before launch.

How we work

One team for the whole system
We design the screens, write the server and run the infrastructure ourselves, so nothing gets lost between handoffs.
You own what we build
Code, data and cloud accounts stay in your name, on tools you can keep using without us.
Measured, not assumed
We test on real devices, rehearse restores and watch the bill, and we report numbers rather than adjectives.

Tell us what you’re working on

Projects, partnerships and questions about our apps all start here. We read every message.

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