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Identify tasks, difficulties and priority journeys.
Our service
UX/UI Design for Web Apps and SaaS: Interfaces Ready to Build
UX/UI design for a web application or SaaS connects business use with product delivery. We design user journeys and interfaces with technical constraints in mind, then follow them through to go-live, including for AI features built into your screens.
For
SaaS vendors and companies launching, redesigning or modernizing a web application or business tool
Deliverables
User journeys, mockups, clickable prototype, components and states ready for development
Formats
UX scoping, fixed-price batches, or design within a dedicated team
Next step
Follow-up through go-live; the same teams can build the application
What we deliver
A scope tied to your business.
UX/UI design turns users’ tasks into journeys and interfaces. It reduces ambiguity before development and prepares a consistent experience. In a business application, understanding a record, an error or an available action matters as much as how the screen looks.
Design & test
Formalize screens and interactions, then test the proposals against real use.
Prepare development
Define the components, states and rules needed for implementation.
For which needs
When should you work on the UX/UI of a web app or SaaS?
Effective UX/UI goes beyond aesthetics. It structures use, reduces complexity and aligns the product with users’ real needs. It comes into play at several points in a product’s life.
Launch an MVP with a clear interface
Establish understandable journeys from the first version, so feedback focuses on the product’s value rather than on learning how to use it. See custom MVP development.
Rethink key journeys
Onboarding, sign-up, dashboards or business workflows with roles and approvals, wherever users drop off or make mistakes.
Modernize an existing application
Redesign the interface of a web application or internal tool without rebuilding the whole product, starting with the most costly friction points.
Design a SaaS or business tool
Business portals, back offices, customer and partner extranets, web and mobile applications.
Make your interfaces consistent
Structure a design system when several teams or modules produce different screens for the same needs.
Our UX/UI expertise
UX/UI designed for applications that are ready to build.
UX audit of an existing interface
Identify friction points, prioritize quick wins and deeper workstreams.
User profiles and journeys
Key needs, user flows and information architecture for a consistent experience.
Wireframes and UI mockups
Desktop and mobile screens focused on readability, use and real content.
Interactive prototypes
Test journeys before development and validate UX/UI choices with users.
Design system
Components, usage rules, states, accessibility and design tokens shared between design and development.
Follow-up during development
UI reviews, implementation checks and adjustments through to go-live.
UX/UI and AI
Designing the interface for AI features.
A built-in assistant, search across your documents or automatic summarization raise their own interface questions: variable response times, uncertain answers, sources to display, the ability to correct or reject a suggestion, the user taking back control. These states are designed like any others, before development, so that users understand what the tool is doing and stay in control.
The team designing the interface works with the team integrating the model, which avoids screens that cannot hold up in production. See our enterprise AI solutions.
From work to deliverables
How the engagement unfolds.
We start from real use, constraints and situations. Journeys and mockups are discussed with users and developers. Components are described with their states: empty, loading, error, validation and limited permissions. The handover includes the behaviors needed to build the interface, not just images.
Discovery
Workshops, user needs and prioritization to scope the application or feature.
Structure
User flows, information architecture and key screens.
Mockups and prototype
UI mockups and a clickable prototype to validate interfaces quickly.
Testing and adjustments
Testing with users and simplifying journeys.
Handover to development
Specifications, components and UI reviews through to go-live.
What your team receives
- Journeys and mockups
- clickable prototype
- components and states
- handover materials for development
Engagement models
Our UX/UI engagement models.
UX scoping
To quickly scope an application or feature, with an understanding of needs, a prototype, user testing and an agreed direction. It can be part of IT project scoping.
Fixed price in phases
For a redesign or a defined scope, journeys, screens or modules are designed with a committed budget and schedule. See the fixed-price IT project.
Within a dedicated team
For a continuously evolving SaaS, UX/UI design follows the product roadmap, from the first version to the next, within a dedicated team.
The choices that matter
The points to decide with your team.
A component library should make changes easier without forcing the same screen onto every need. We look at accessibility, mobile and real content. Visual choices are tested against business rules and technical constraints before they become promises that cannot be implemented.
How we work together
Preparing the first conversation.
You can walk us through how things currently work, the users involved and the difficulties you face. The documents, examples and access needed are specified afterwards, depending on the agreed scope. The first goal is to understand the work to be done and the dependencies that may affect how it unfolds.
Frequently asked questions
UX/UI for web apps and SaaS: your questions.
Does UX/UI come before development?
Yes. It defines journeys, designs interfaces and validates screens through prototypes before any code is written. This reduces back-and-forth during development, speeds up decisions and delivers a more consistent product from the start.
Can the UX/UI of an existing web application be improved?
Yes, without rebuilding everything. A UX audit identifies friction points, then journeys, interfaces and readability are improved step by step, starting with what weighs most on usage.
Which UX/UI deliverables are provided?
Depending on the need, user journeys, wireframes, UI mockups, a clickable prototype, a design system and specifications for development, with the states of each component. These elements secure delivery and product consistency.
Is a design system necessary for a web application?
It is not mandatory at the start, but it quickly becomes useful as the product evolves. It standardizes components, keeps interfaces consistent and speeds up development, especially for a SaaS or a complex business tool.
When should UX/UI be brought into a project?
Upfront to scope the product, during an interface redesign, or continuously to improve an existing product. Ideally, it should be involved from the start to structure journeys before the first development work.
Do you also develop the interfaces you design?
Yes. The same teams can build the application’s front end and back end, which avoids losses between the mockup and the delivered product. See custom web development.
How do you design the interface for an AI feature?
By treating its specific states as full-fledged cases. Waiting, uncertain answers, displaying sources, user corrections, service errors. The interface must let users understand and control what the AI suggests, which determines its adoption in production.
Let’s talk about your project.
Tell us about the product, the users involved and the journeys that cause problems. Together we will define the first scope to explore.