Services

One partner. The whole cycle.

Build a product end to end, or advise a team on its agent-native architecture.

At the centreYour product

Build

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

01

Discovery

Frame the product before the first line of code, so the budget builds instead of correcting.

Deliverable
A scoping document: scope, user journeys, technical risks and a detailed estimate.
Typical duration
2 to 3 weeks
From
€3,500per project
Service details
What is included
  • Workshops with the people who know the domain, not only those who commission it
  • User journeys and edge cases mapped out
  • Technical choices argued, including what is ruled out and why
  • A breakdown into shippable increments, each usable on its own
  • A detailed estimate and a schedule that holds
02

Product design

An interface that holds together, carried by a design system your developers can keep alive without us.

Deliverable
A design system delivered as code — tokens, components, states — and the screens that use it.
Typical duration
3 to 5 weeks
From
€6,000per project
Service details
What is included
  • Colour, type and spacing tokens, in light and dark themes
  • Components with every state: rest, hover, focus, disabled, loading
  • Key screens in high fidelity, including empty states and errors
  • WCAG 2.2 AA checked before delivery, not after
  • Usage documentation, so the system outlives its author
03

Web development

A fast web application that holds up over time, with the tests and delivery chain to match.

Deliverable
An application deployed across three environments, with its tests and operations documentation.
Typical duration
6 to 12 weeks
From
€12,000per project
Service details
What is included
  • A web application, server-rendered or static depending on what the product demands
  • End-to-end tests on the journeys that carry the business
  • Continuous integration: nothing reaches production without going green
  • Three distinct environments, with secrets that are never shared between them
  • Operations documentation: how it deploys, how it is watched, how it is fixed
04

Mobile development

An iOS and Android app from a single codebase, published on both stores.

Deliverable
An app published on the App Store and Play Store, with its release pipeline automated.
Typical duration
8 to 14 weeks
From
€15,000per project
Service details
What is included
  • A React Native app for iOS and Android from a shared codebase
  • Automated delivery to both stores, with no manual step left to be forgotten
  • Notifications, offline mode and secure storage as the product requires
  • Testing on real devices, not only simulators
  • Release support, including review rejections
05

Infrastructure & security

Infrastructure described as code, and Zero Trust access that does not rest on a text message.

Deliverable
Infrastructure reproducible from the repository, and admin access with no shared password.
Typical duration
3 to 6 weeks
From
€8,000per project
Service details
What is included
  • Infrastructure described as code, reproducible from one environment to the next
  • Zero Trust access: identity verified on every request, not a perimeter crossed once
  • Authentication with hardware keys or passkeys — never a one-time code over SMS
  • Secrets managed outside the repository, distinct per environment
  • Backups verified by an actual restore, not by the presence of a file
06

Maintenance & evolution

A product kept current, watched and fixed, with someone who answers when it breaks.

Deliverable
A monthly engagement: fixes, security updates and evolutions, with a written response time.
Typical duration
Monthly engagement, no minimum term
From
€1,500per month
Service details
What is included
  • Defect fixes, with a written response time by severity
  • Dependency security updates, applied and verified
  • Uptime and error monitoring, with alerting
  • A monthly evolution budget, carried over within the quarter
  • A monthly report: what was done, what is coming, what is worrying

Advise

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

01

Agent-Native Architecture Advisory

Make an existing product agent-operable without rewriting it — and without opening more than it should.

Deliverable
An audit of what exists and a staged migration plan, each stage shippable on its own.
Typical duration
2 to 4 weeks
Rate
€1,200per daytapering by bracket down to €300 — 5-day minimum engagement
Service details
What is included
  • An audit of the business logic: what is already nameable as a capability, what is buried in the interface
  • A defined Actions layer: named, parameterised capabilities invoked identically by the UI and by an agent
  • MCP exposure: what gets opened, what does not, and why
  • Guardrails: tool scope, usage ceilings, call logging
  • A staged migration plan, each stage shippable and reversible
Start a project
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Agent

Talk to the Discovery AgentFrame your project in eight questions.

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Services

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

Go to

YorroProduct engineering studio in Abidjan and Paris. We design, we build, we ship.
ServicesBuild a product end to end, or advise a team on its agent-native architecture.
LabsWhat the studio has built: products, prototypes and research, with where each one actually stands.
TutorialsStep-by-step guides drawn from real projects, grouped into tracks by topic.
JournalThe studio's notes and positions.
ContactDescribe your project; you get a framing back, not a boilerplate quote.
AboutWho runs the studio, how it works, and what it turns down.
Discovery AgentDescribe your project in conversation; the agent ticks the modules and produces an indicative estimate.

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