Zetesis

(ζήτησις) — from Greek, inquiry

We solve complex business problems with AI and infrastructure.

From problem to a system in production.

See how we work ↓

One deployment per customer or one space per customer

Aug 4, 2026ConsultingMulti-tenancyArchitecture

Search and agents over your own documentation

Jul 31, 2026ServiceRAGSearchAgents

Coder: remote development environments with devcontainers for the whole team

Jul 30, 2026LabCoderDevcontainersGovernanceTeam

Postiz: scheduling social media posts from your own server

Jul 28, 2026LabHomelabKubernetesKEDASelf-hosting
Field notebookView all →

01Services

What I can do for you

Fixed-scope projects with clear goals. An outside perspective to see what your team no longer can.

02Method

How I work

Four phases. The first two to understand; the last two to execute.

01hourly

Understand

I need to understand how you actually work. Tacit knowledge — the decisions no one documented.

02hourly

Align

Technology and strategy in the same direction. I identify the gap between where you are and where you want to be.

03fixed budget

Propose

Concrete proposal, defined scope, fixed budget. No surprises.

04fixed budget

Implement & Evaluate

I implement the solution and we measure the impact together against the objective we defined.

Phases 1-2 billed hourly. Phases 3-4 fixed budget.

Rubén García

Proof of Work

Rubén García Hernando

Technology partner · Systems architect

Everything I offer, I apply first to my own product. Zetesis is systems architecture, artificial intelligence and complex problem solving in production: a RAG as a Service with semantic search, AI agents and deployment on Kubernetes. Open core, maintained and running.

Learn more

Open Source

Set up your own CMS with semantic search and RAG chat in minutes. One click, one DevContainer, and you have Payload CMS + Typesense + AI running locally.

View on GitHubOpen in DevContainer
payload-agents

# Clone and start locally

$ git clone https://github.com/Zetesis-Labs/PayloadAgents

$ pnpm install

$ pnpm dev

# 6 publishable npm packages

$ pnpm --filter @zetesis/* build