Websites & online stores
Brand sites, landing pages and stores, on Shopify or fully custom. Fast, bilingual, and yours to own: no lock-in to our tools.
- Proof · zymbiotech.com · zalvyum.com · cosprax.com
Facts
Everything about us, in plain words.
The details behind the story: what is running, how we work, who builds it, and the answers people ask for. The core answers from these same words, and so can your AI.
What we do
Everything, from the brand to the backend.
One team designs it and builds it, so nothing gets lost between the agency and the developers. Each line below has something live or delivered behind it.
Web & mobile apps
Platforms with users, data and logic behind them: communities, portals, dashboards and desktop apps.
- Proof · nodriza.us (community + archive) · Zymbio RH (desktop)
Custom software & automation
The process your team does by hand, turned into software that follows your rules: order pipelines, file generators, APIs, and integrations with your store, payments and CRM.
- Proof · Atelier: custom order-to-print software for a personalized-print brand, delivered
Brand & creative
Identity, logo, art direction, copy and content series. The look and the words, made by the same team that builds the product.
- Proof · The Zymbiotech and Zalvyum identities · the CosPrax universe
AI that doesn't invent
Assistants and search over your documents, catalog or archive. They cite the source or say “I don't have that”. On your own hardware when the data can't leave. For customer service: trained on your site, help center, catalog and policies; what it doesn't know goes to a person, and it never claims to be human.
- Proof · nodriza.us, live · our own core, measured below
What's running
Built, and running.
Three things you can check. One is public. One is custom software delivered to a client. One is our own product, in pre-launch.
§ 01 · Live · public
nodriza.us
A curated archive with an AI that answers only from the archive and cites every source. If it isn't in the archive, it says so.
- Cloudflare Pages · Workers AI · D1
- Every entry carries its source
- Cited, or withheld
§ 02 · Delivered · client
Custom software for a personalized-print brand.
Personalized prints, sold online. The engine assembles the artists' own approved artwork by the rules the artists defined and outputs print-ready files. When two names collide or a piece needs an adjustment, it flags "review" instead of guessing. No generative AI in the composition.
- Same order in, same file out
- Print-ready PDF and PNG, three sizes
- "Review" flag instead of a guess
- Order API, asynchronous
§ 03 · Our product · pre-launch
Zymbio RH. CV analysis, local-first.
Four layers on every CV: completeness, positive signals, cognitive profile, red flags. A holistic match against the role. Runs on the recruiter's own Mac; nothing leaves the machine. Signed licenses and a merchant of record for billing.
- Apple Silicon · offline
- ed25519 licensing · Lemon Squeezy billing
- Desktop app (Tauri) · ES / EN
- Status: DMG v3 · pre-launch
For agencies
You sell it. We build it.
Marketing and web agencies: we're the production team for what you don't build in-house. Custom software, apps, integrations, and AI that doesn't invent. Under your brand or ours, and the client stays yours.
- White-label or co-branded
- You keep the client, we build
- Fixed scope, fixed price per project
- English and Spanish
The core we're building
One brain. Many bodies.
Zalvyum is the memory-first deterministic core we're building: routing, memory, composition, and a judge that decides whether an answer is grounded. The language model, when there is one, is a replaceable part that only phrases the answer. It never decides what's true. Today it runs in our lab; the products above run on their own engines.
- L 03Zymbios — the bodiesThe plan
- L 02Bespoke — per-client enginesAs engaged
- L 01Zalvyum — memory-first coreno model needed
- L 00Your hardware · CPUNo cloud · no GPU
Measured 2026-09-08 on a laptop, same ten questions: 100 MB and no GPU, against 5 GB and the GPU for a 7B model.
Read the Zalvyum thesis →How an engagement works
Fixed scope. Measured first.
Two ways we build for clients. Both start by measuring your real data before a line of code is written, and both ship with their own automated checks, so you know it worked without checking by hand.
§ A · Engines built to spec
The engine that replaces the decision your team repeats.
A short written exchange to find the repeatable half of the problem. A measured inventory of your real data. A fixed-scope build that runs on your hardware and replaces the decision your team makes by hand, deterministically.
- Written discovery · the repeatable half
- Inventory of real data, measured, before code
- Fixed scope, fixed price
- Ships with its own automated judges
§ B · Assistants on-premise
Answers from your documents. Cited, or withheld.
Legal, clinical, or any regulated domain: an assistant that answers only from your sources, quotes them verbatim, and stops when the answer isn't there. Nothing leaves your machines.
- Runs on your hardware, offline
- Cites verbatim or abstains
- A human gate on every uncertain answer
- ES / EN
Who builds it
Founder-led. Engineered end to end.
Zymbiotech designs, builds, and ships the core, the bodies, and the judges that check them. No resold models, no assembled demos.
Founder · Systems architect
Erika Herrmann Carrasco
Founder of Zymbiotech and architect of the Zalvyum core. Leads every engagement personally: the discovery, the measured inventory, the build, and the judges that prove it works. The differentiator isn't the AI. It's that what Zymbiotech ships doesn't guess.
Erika Herrmann Carrasco on LinkedIn →Questions
Straight answers.
The facts about us, so nobody has to guess them.
What is Zymbiotech?
Zymbiotech is a design and engineering studio, from Mexico to the world.
Where are you based?
From Mexico City (CDMX) to the world. We work with clients anywhere, remotely.
How long have you been operating?
Zymbiotech has been operating since 2025.
What languages do you work in?
English and Spanish.
How much does a project cost?
Every price comes from analyzing your project. Tell us about it in writing, and within 48 hours you get a fixed-price, fixed-scope quote, or within 24 if you tell us it's urgent. Reviewing your project and preparing the quote has no cost.
What payment methods do you accept?
Bank transfer or PayPal.
Can I book an appointment online?
There is no online booking: everything starts in writing. Write to core@zymbiotech.com or message us on LinkedIn, and we reply within two business days.
How long does a project take?
Every timeline comes from analyzing your project. We give it to you in writing in your quote, with the scope and the price. The quote arrives within 48 hours, or within 24 if you tell us it's urgent.
Do you offer maintenance?
Yes. Maintenance and changes after delivery are agreed in writing, separately from the project.
Do you use WhatsApp?
We don't use WhatsApp: everything starts in writing. Write to core@zymbiotech.com or message us on LinkedIn.
Or ask the core: it answers from these same words.
Tools
Small tools, honest about their limits.
Local utilities for people who work with AI. No accounts, no upload, no catch: every one says plainly what it can and can't do.
- Website CheckWhat an attacker sees on your site in a minute: certificate, spoofable email, security headers, what Google shows. Passive and deterministic, every issue with its evidence.
- Secret ScrubberRedact emails, API keys, tokens and card numbers out of any text before you paste it into an AI. In your browser.
- Token VisualizerSee how an LLM splits your text into tokens, with context-window fit and cost.
- Text OptimizerCut token-heavy text down to a lean, AI-ready version, never paraphrased by a model.
Work with us
Tell us what you need built.
A website, an app, the process your team repeats, an assistant that doesn't invent, or a partnership. Write, and we'll start with questions.
core@zymbiotech.com → · Message us on LinkedIn →
How pricing works: every price comes from analyzing your project. Tell us about it in writing, and within 48 hours you get a fixed-price, fixed-scope quote, or within 24 if you tell us it's urgent. No hourly meter, and no bill per answer once it runs.
We reply within two business days, with questions first and a fixed scope after.