Functional Design and Rapid Prototyping
Our design agency transforms your ideas into wireframes, interactive prototypes and development-ready specifications, all accelerated by AI tools to deliver faster without sacrificing quality.
Why design before you code ?
Our custom functional design reduces risks, costs and surprises during development.
Your ideas are vague
You have a vision but no product yet. We turn your assumptions into concrete wireframes your stakeholders can validate.
Your stakeholders are not aligned
Every team has its own vision. An interactive prototype aligns opinions far faster than an 80-page specification document.
Your previous projects went off the rails
Too much scope creep, too many back-and-forths during development. Good upfront design can cut delivery costs by 3x.
Development is dragging
Your developers waste time on vague specifications. A clear prototype saves them weeks of technical deliberation.
You want to test before investing
Before committing €100k to development, you want to validate your idea with real users without writing a single line of code.
You are launching an innovative product
No reference on the market, everything has to be invented. Iterative prototyping is the only way to de-risk this type of project.
Our functional design offering
From the first idea to the high-fidelity prototype, here is what our custom functional design delivers.
Product scoping
Discovery workshops, persona identification, MVP scope definition, feature prioritization by business value.
Workshops · UXWireframes & architecture
Low-fidelity wireframes to validate screen structure, information architecture and user journeys before any design work.
Low-fidelity · User flowsInteractive prototypes
Clickable Figma mockups simulating the final experience. Ideal for user testing and stakeholder validation.
Figma · PrototypeDeveloper specifications
Clear technical documentation, design system, component states, edge cases.<br /> Our developers code without asking questions.
Notion · HandoffThe AI tools that accelerate our design work
We combine the best design tools with AI to deliver faster, without sacrificing quality.
Langchain development agency
Voir la page technoAI doesn't replace the designer, it enhances them. We use it to accelerate the exploratory phase (generating variants, writing specs, finding patterns), so we can spend more time on what matters: understanding your users and solving their real problems.
From brief to prototype in 4 steps
A 4-week iterative process, from initial brief to development handoff.
Discovery
Scoping workshops with your business teams, persona identification, formalization of objectives and KPIs.
1 weekWireframes
Low-fidelity wireframes of all key screens, validation of information architecture and user journeys.
1 weekHigh-fidelity prototype
Final Figma mockups, complete design system, clickable interactive prototype testable by your users.
2 weeksSpecs & handoff
Complete developer documentation, exportable design tokens, development team briefing.
1 - 2 weeksThe experts driving your design
Senior profiles, at the intersection of business, data and software engineering.
Ready to scope your product before coding?
Free initial briefing within 48h. Leave with a first costed vision of your project.
Frequently asked questions about functional design
How much does a design project cost?
A simple prototype starts at around €2,000.
A full design package with workshops, wireframes, high-fidelity prototype and specs ranges from €5,000 to €8,000 depending on complexity.
What is the difference between a wireframe and a prototype?
A wireframe is a low-fidelity diagram that validates the structure.
A prototype is an interactive high-fidelity mockup that simulates the final experience.
Can you work with our existing design system?
Yes. We adapt to your brand guidelines, your design system and your internal guidelines.
Do you carry out user testing?
Yes, on request. We organize remote or in-person sessions to validate user journeys with 5 to 10 target users.
Do you need a detailed brief before starting with you?
Not at all! That is precisely the purpose of our product scoping phase. You can come with just an idea or a business problem. During our discovery workshops, we define your personas, information architecture and the exact scope of your project together, to lay solid foundations before any design work begins.
