Product engineering studio — Abidjan · Paris

Your product at the centre, our six disciplines around it.

Yourproduct

We design, build and ship web and mobile applications — from scoping to production, security and operations included.

Start a projectSee the services
What we believe

A product is either operable, or endured.

A product's business logic should carry names, parameters and descriptions — not live inside its interface components. That is what makes a product operable by a command palette, by an internal API, and by an agent. This site is built that way.

The advisory service The research under way

What we do

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Build a product end to end, or advise on what already exists.

Build

The six lifecycle phases. We take the product from idea to production, then keep it running.

Advise

On a product that already exists. We deliver an audit and a migration plan, not an application.

What we have built

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Products, prototypes and research, with where each one stands.

ProductIn testing

Yorro.dev

The studio's own site: showcase, journal and tutorials, built as a demonstration of the architecture it sells.

  • Astro
  • TypeScript
  • Tailwind CSS
  • Cloudflare Pages
  • +1
ResearchRoadmap

Actions exposed over MCP

Publish the site's Actions layer as an MCP server, so an external agent can use it — without opening more than it should.

  • MCP
  • TypeScript
  • Cloudflare Workers
PrototypeRoadmap

Assisted writing pipeline

Write an article in French, derive the English version and the metadata from it, without a model publishing anything on its own.

  • MDX
  • TypeScript
  • Claude

What we teach

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Step-by-step guides drawn from real projects.

What we think

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Notes and positions, not press releases.

Start a project

Act

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Switch the site to FrenchFrançaissetLocale({locale:"fr"})
Labs — ProductFilter Labs by typefilterLabs({type:"Produit"})
Labs — PrototypeFilter Labs by typefilterLabs({type:"Prototype"})
Labs — ResearchFilter Labs by typefilterLabs({type:"Recherche"})
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Journal — EngineeringFilter the Journal by categoryfilterJournal({category:"Ingénierie"})
Journal — SecurityFilter the Journal by categoryfilterJournal({category:"Sécurité"})
Journal — Agent-NativeFilter the Journal by categoryfilterJournal({category:"Agent-Native"})
Journal — StudioFilter the Journal by categoryfilterJournal({category:"Studio"})
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Tutorials — BeginnerFilter tutorials by levelfilterTutorials({level:"Débutant"})
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Tutorials — AdvancedFilter tutorials by levelfilterTutorials({level:"Avancé"})
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Services

DiscoveryFrame the product before the first line of code, so the budget builds instead of correcting.openService({service:"discovery"})
Product designAn interface that holds together, carried by a design system your developers can keep alive without us.openService({service:"design"})
Web developmentA fast web application that holds up over time, with the tests and delivery chain to match.openService({service:"web"})
Mobile developmentAn iOS and Android app from a single codebase, published on both stores.openService({service:"mobile"})
Infrastructure & securityInfrastructure described as code, and Zero Trust access that does not rest on a text message.openService({service:"infrastructure"})
Maintenance & evolutionA product kept current, watched and fixed, with someone who answers when it breaks.openService({service:"maintenance"})
Agent-Native Architecture AdvisoryMake an existing product agent-operable without rewriting it — and without opening more than it should.openService({service:"agent-native"})

Go to

YorroProduct engineering studio in Abidjan and Paris. We design, we build, we ship.navigate({page:"home"})
ServicesBuild a product end to end, or advise a team on its agent-native architecture.navigate({page:"services"})
LabsWhat the studio has built: products, prototypes and research, with where each one actually stands.navigate({page:"labs"})
TutorialsStep-by-step guides drawn from real projects, grouped into tracks by topic.navigate({page:"tutorials"})
JournalThe studio's notes and positions.navigate({page:"journal"})
ContactDescribe your project; you get a framing back, not a boilerplate quote.navigate({page:"contact"})
AboutWho runs the studio, how it works, and what it turns down.navigate({page:"about"})
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