Design Systems

Design Systems

A design system unifies teams and interfaces around a shared language, anchored in the code as the single source of truth.

A design system unifies teams and interfaces around a shared language, anchored in the code as the single source of truth.

A well-conceived design system is not simply a catalog of components: it's a technical and organizational framework that structures production, facilitates exchanges between teams and guarantees consistency on a large scale. It takes root in the code, anchors itself in your constraints, and becomes a lever for quality and performance.

Working closely with in-house teams, we create ready-to-live design systems designed to adapt to your multi-product, multi-technology environments. We support the implementation of governance rules, contribution and documentation processes, to make the design system a strategic tool - serving industrialization, collaboration and long-term viability.

Use cases

A true act of transformation that can lead to a 30% to 50% productivity boost.

Use cases

A true act of transformation that can lead to a 30% to 50% productivity boost.

Use cases

A true act of transformation that can lead to a 30% to 50% productivity boost.

Use cases

A true act of transformation that can lead to a 30% to 50% productivity boost.

Photo of Maxime Frere on the stage of a conference
Photo of Maxime Frere on the stage of a conference

Implementing a Design System involves an in-depth transformation of how design and tech teams work together. Numerous studies confirm that a Design System can reduce the time spent on design production or front-end development by 30 to 50%. The result: greater consistency, greater speed, and up to +20% in revenues thanks to a unified, more credible user experience.

Implementing a Design System involves an in-depth transformation of how design and tech teams work together. Numerous studies confirm that a Design System can reduce the time spent on design production or front-end development by 30 to 50%. The result: greater consistency, greater speed, and up to +20% in revenues thanks to a unified, more credible user experience.

Principal Designer Maxime Frère presents the fundamentals of “Design at Scale” at a Flupa conference in Toulouse (Photo: Joris Gaigne).

Key benefits

Accelerate your time to market

Accelerate your time to market

Accelerate your time to market

Ensure high-quality Customer Experiences

Ensure high-quality Customer Experiences

Ensure high-quality Customer Experiences

Optimize costs and maintenance

Optimize costs and maintenance

Optimize costs and maintenance

Get your teams to collaborate more efficiently

Get your teams to collaborate more efficiently

Get your teams to collaborate more efficiently

BNP Paribas: Industrialize without standardizing with a DLS

In 2022, BNP Paribas chose to unify design and development around a multi-brand, multi-platform Design Language System (DLS), to support the redesign of its applications. We laid a solid foundation (nomenclature, tokens, components) while facilitating a major cultural change: the adoption of the Design and Tech teams. This DLS boosts productivity, consistency and collaboration without sacrificing brand uniqueness.

excerpt from a study on the impact of the BNPP Design System
excerpt from a study on the impact of the BNPP Design System
excerpt from a study on the impact of the BNPP Design System

CMA CGM: Establishing new foundations for greater Design maturity

For one of the world's leading transport companies, we accelerated digital transformation through a Design at Scale strategy. By rethinking the experience of native applications with logical, scalable interfaces, we raised awareness at all levels, from Product Owners to senior management, to ensure sustainable adoption of new design methods and processes.

Elements extracted from the CMA CGM Design Foundations documentation
Elements extracted from the CMA CGM Design Foundations documentation
Elements extracted from the CMA CGM Design Foundations documentation

L’Oréal: Framing, convincing, and building a multi-brand Design System

Before laying the foundations of L’Oréal’s future multi-brand Design Language System, our first objective was to align digital teams around a shared vision. We then conducted in-depth research to build a strong business case and demonstrate the strategic value of the project to key stakeholders. This process led to a clear product strategy, an operating model, and a comprehensive design system architecture — covering tokens, libraries, documentation, and the structuring of Figma variables.

Overview of several deliverables for a global Design System project for L'Oréal
Overview of several deliverables for a global Design System project for L'Oréal
Overview of several deliverables for a global Design System project for L'Oréal

Tailwind Sync: our Figma plugin to simplify design-dev collaboration

Created as an internal tool, this plugin synchronizes Figma variables to Tailwind CSS code with a single click, simplifying exchanges between design and development teams. It is offered for free on the Figma Community and illustrates our commitment to creating tools that boost productivity.

Cover image for the Tailwind Sync plugin with its promise and screenshots
Cover image for the Tailwind Sync plugin with its promise and screenshots
Cover image for the Tailwind Sync plugin with its promise and screenshots

Work with Source.paris

Our designers combine strategic consulting and operational expertise, to support your teams at the right level and at the right pace.

Work with Source.paris

Our designers combine strategic consulting and operational expertise, to support your teams at the right level and at the right pace.

Work with Source.paris

Our designers combine strategic consulting and operational expertise, to support your teams at the right level and at the right pace.

Work with Source.paris

Our designers combine strategic consulting and operational expertise, to support your teams at the right level and at the right pace.

Key benefits

Accélérez votre mise sur le marché

Accélérez votre mise sur le marché

Garantissez des expériences utilisateur de haute qualité

Garantissez des expériences utilisateur de haute qualité

Optimisez vos coûts et votre maintenance

Optimisez vos coûts et votre maintenance

Faites collaborer vos équipes plus efficacement

Faites collaborer vos équipes plus efficacement

Expert selection
Expert selection
Portrait of Maxime Frere

Maxime Frere

Principal Designer

Portrait of Maxime Frere

Maxime Frere

Principal Designer

Portrait of Maxime Frere

Maxime Frere

Principal Designer

Portrait of Maxime Frere

Maxime Frere

Principal Designer

Olivier Chatel

Managing Director

Olivier Chatel

Managing Director

Olivier Chatel

Managing Director

Olivier Chatel

Managing Director

Portrait of Valentin Prost

Valentin Prost

Senior Designer

Portrait of Valentin Prost

Valentin Prost

Senior Designer

Portrait of Valentin Prost

Valentin Prost

Senior Designer

Portrait of Valentin Prost

Valentin Prost

Senior Designer

Portrait of Youssef Douieb

Youssef Douieb

Designer

Portrait of Youssef Douieb

Youssef Douieb

Designer

Portrait of Youssef Douieb

Youssef Douieb

Designer

Portrait of Youssef Douieb

Youssef Douieb

Designer

Our commitments

01

A strategy with tools, not theory

Our recommendations are always based on concrete deliverables (mock-ups, prototypes, visual roadmaps) designed to facilitate decision-making at every stage.

02

From idea to clarity, faster, powered by AI

We integrate AI tools to accelerate research, generate initial concept leads, and feed strategic thinking from the earliest stages of a project.

03

High-fidelity prototypes in a few days

We produce animated or interactive demonstrators at an early stage to engage stakeholders, reduce ambiguity and secure your product decisions.

04

A comprehensive, responsible team

No middleman. Designers, AI specialists, devs: you have access to a dedicated team, autonomous and responsible from start to finish.

05

Adaptable to your context

Short-term assignments or long-term support, with in-house teams or external partners: our model adapts to your organization.

Our commitments

01

A strategy with tools, not theory

Our recommendations are always based on concrete deliverables (mock-ups, prototypes, visual roadmaps) designed to facilitate decision-making at every stage.

02

From idea to clarity, faster, powered by AI

We integrate AI tools to accelerate research, generate initial concept leads, and feed strategic thinking from the earliest stages of a project.

03

High-fidelity prototypes in a few days

We produce animated or interactive demonstrators at an early stage to engage stakeholders, reduce ambiguity and secure your product decisions.

04

A comprehensive, responsible team

No middleman. Designers, AI specialists, devs: you have access to a dedicated team, autonomous and responsible from start to finish.

05

Adaptable to your context

Short-term assignments or long-term support, with in-house teams or external partners: our model adapts to your organization.

Our commitments

01

A strategy with tools, not theory

Our recommendations are always based on concrete deliverables (mock-ups, prototypes, visual roadmaps) designed to facilitate decision-making at every stage.

02

From idea to clarity, faster, powered by AI

We integrate AI tools to accelerate research, generate initial concept leads, and feed strategic thinking from the earliest stages of a project.

03

High-fidelity prototypes in a few days

We produce animated or interactive demonstrators at an early stage to engage stakeholders, reduce ambiguity and secure your product decisions.

04

A comprehensive, responsible team

No middleman. Designers, AI specialists, devs: you have access to a dedicated team, autonomous and responsible from start to finish.

05

Adaptable to your context

Short-term assignments or long-term support, with in-house teams or external partners: our model adapts to your organization.

Our commitments

01

A strategy with tools, not theory

Our recommendations are always based on concrete deliverables (mock-ups, prototypes, visual roadmaps) designed to facilitate decision-making at every stage.

02

From idea to clarity, faster, powered by AI

We integrate AI tools to accelerate research, generate initial concept leads, and feed strategic thinking from the earliest stages of a project.

03

High-fidelity prototypes in a few days

We produce animated or interactive demonstrators at an early stage to engage stakeholders, reduce ambiguity and secure your product decisions.

04

A comprehensive, responsible team

No middleman. Designers, AI specialists, devs: you have access to a dedicated team, autonomous and responsible from start to finish.

05

Adaptable to your context

Short-term assignments or long-term support, with in-house teams or external partners: our model adapts to your organization.

They trust us
They trust us
Capacités

Design

User research

CRO audit

UX audit

Formalizing the challenges

Concepts

Tailored experience design

Interactive prototypes

User testing & rapid iteration

Token-based design systems

Tech

Shopify Plus certification

Senior technical consulting

Technical architecture

Front-end dev & micro-interactions

UI component library

No-code/low-code support

IA

Lovable Prototype

Bolt Prototype

Process automation

AI integration into workflows

AI generative integration consulting

Capacités

Design

User research

CRO audit

UX audit

Formalizing the challenges

Concepts

Tailored experience design

Interactive prototypes

User testing & rapid iteration

Token-based design systems

Tech

Shopify Plus certification

Senior technical consulting

Technical architecture

Front-end dev & micro-interactions

UI component library

No-code/low-code support

IA

Lovable Prototype

Bolt Prototype

Process automation

AI integration into workflows

AI generative integration consulting

Capacités

Design

User research

CRO audit

UX audit

Formalizing the challenges

Concepts

Tailored experience design

Interactive prototypes

User testing & rapid iteration

Token-based design systems

Tech

Shopify Plus certification

Senior technical consulting

Technical architecture

Front-end dev & micro-interactions

UI component library

No-code/low-code support

IA

Lovable Prototype

Bolt Prototype

Process automation

AI integration into workflows

AI generative integration consulting

Capacités

Design

User research

CRO audit

UX audit

Formalizing the challenges

Concepts

Tailored experience design

Interactive prototypes

User testing & rapid iteration

Token-based design systems

Tech

Shopify Plus certification

Senior technical consulting

Technical architecture

Front-end dev & micro-interactions

UI component library

No-code/low-code support

IA

Lovable Prototype

Bolt Prototype

Process automation

AI integration into workflows

AI generative integration consulting

Got a project in mind?

Talk to an expert for 30 minutes.

Portrait de Cédric Marteau
Portrait de Maxime Frere
portrait de Jules Bassoleil

We’ll get back to you shortly.

Got a project in mind?

Talk to an expert for 30 minutes.

Portrait de Cédric Marteau
Portrait de Maxime Frere
portrait de Jules Bassoleil

We’ll get back to you shortly.

Got a project in mind?

Talk to an expert for 30 minutes.

Portrait de Cédric Marteau
Portrait de Maxime Frere
portrait de Jules Bassoleil

We’ll get back to you shortly.

Got a project in mind?

Talk to an expert for 30 minutes.

Portrait de Cédric Marteau
Portrait de Maxime Frere
portrait de Jules Bassoleil

We’ll get back to you shortly.