UX/UI, when usability serves companies

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A UX agency to design experiences and develop performance

Our UX agency combines experience and performance when designing efficient digital solutions. We ensure that your audiences’ needs and your company’s objective meet.
Whether you want to create or revamp a website, whether it is B2B or B2C-oriented, desktop, mobile or tablet, or if it is an app or if you simply want to improve conversion within an existing platform, our UX experts integrate the user in the center of the creation process.

Strategy and support in Design

We analyze your users in order to design experiences that suit their needs, their habits, their expectations and evaluate their feedback to guide the conception in the right direction.

UX & Performance

We analyze your users’ behaviors based on specific KPIs to understand and locate where improvements can be made. Users feedback allows us to adapt and update interfaces continuously in order to optimize transformation and conversion rate.

UX Formation

Educating your teams to the business stakes and CRO (conversion rate optimization) linked to the user experience is key to guarantee a project’s success.

A methodology that adapts to your strategy

As a UX agency, we accompany your company in the setup and optimization of your interfaces to deliver the purest user experience possible while measuring its performance and ROI. Based on your objectives and our performance parameters, we define and choose, together, what levers we want to activate and the associated methodology to do so at every stage of your project.

Analyzing and understanding in order to better design and convert

UX benchmark
Data analysis
Behavior analysis
Focus group
Exploration survey
Personas / experience map
User tests

Organize and design

Data and information architecture
Cards sort out
Functional specifications

Evaluate and adjust

User tests
Data analysis, behavior analysis
A/B testing – multivariate testing

A continuous support from experience to performance

Thanks to a vast variety of available skills within the agency, our UX experts can work hand-in-hand with our designers and developers, to guarantee an impeccable result that meet your expectations and with a long-term support.

Our references

Through many different types of project typology, Vanksen has always managed to provide answers to brands’ needs by offering a continuous and customized support and adapted UX methodologies to fulfill client’s objectives as well as users’ expectations.

Our results

Our UX experts allow you to achieve new objectives.

Primagaz – conversion optimization


Raise awareness around Primagaz’ offers while maintaining conversion loss as low as possible and generate as many leads as possible.


  • +200% conversion rate between the first and latest version of the landing page
  • +534% of leads generated with 12k leads generated in total
  • -68% of CPL over the period with a CPL of €5.93 at the end of the period

PSA Foundation – UX optimization


Comment concevoir un formulaire de dépôt de candidature simple et efficace quand plus de 40 informations et documents obligatoires sont demandés. L'objectif était de diminuer le taux d'abandon lors de la soumission d'un dossier de candidature en offrant une expérience agréable aux candidats.


  • +110% conversion (vs. 2016)
  • -19% abandons (at each step of the application process)

ACORIS Mutuelle – website revamp


Create a website that suits the users’ needs while representing the brand’s values (proximity, professionalism, solidarity) and optimizing and raise the number of online quotes requests.


  • +28% traffic (vs. previous year)
  • +30% time spent of the website
  • -20% on the bounce rate
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