Gaetan's versatile approach to Lean UX

Rather than concentrating on lengthy legacy deliverables, I collaborate closely with all team members, and gather valuable feedback as early and often as possible.

My goal is to change a problem for a better solution– to affect the outcome.

My process is flexible and iterative. I establish empathy, generate possibilities and run experiments:

  • Question and test assumptions
  • Define customer Personas and needs
  • Produce cheap, fast working prototypes
  • Measure what matters
  • Facilitate the right tactic at the right time
  • Deliver design solutions that bring it all together

To get/keep the project into perspective, I like to refer to  the central idea of the double diamond process:

find a problem worth solving and develop the right solution for it.

The two alternating phase of convergent and divergent thinking are useful to clarify the intent of the product development activities, and the purpose of various design tools.

user-centred design

To understand and keep at the centre of our design efforts the needs and requirements of the user.

Empathy and curiosity with a good amount of patience will bring out the insightful gem to inform our design.


To foster a better conversation within our team about the users and their experiences, nothing beats the post-it notes and sharpies!

task analysis

To identify the user's thought process, and feelings, I map the current reactions at each step of the task, and often ask the user to think/talk aloud to describe their state of mind.

competitive analysis

To put your product/service in context, I assess the strengths and weaknesses of competitors against your user's needs.

story mapping

To foster a better conversation within our team about the users and their experiences, nothing beats the post-it notes and sharpies!

user journey

I visualise the process that a specific user goes through in order to accomplish a goal. It helps understand and address customer needs and pain points.

Lean UX in action

...implementing flexible tools...

Tools of the trade? the simpler the better: pen and paper! The most important tools are questioning and listening. Then visualising and helping others express their ideas. Gather the most successful ideas and build from there...


20 min design studio or a couple of days of brainstorming? How big is the problem? How urgent is the solution?


Quick and simple visuals to communicate abstract concepts with users and team members in order to generate feedback.


To get users involved early in the design process , I use inexpensive paper prototypes and uncover usability issues and validate design decisions based on actual user reactions.

design thinking create meaningful outcome

Each project or assignment is an opportunity for the team to create shared knowledge. To learn and keep track of the progress with an adequate set of documentation. The best concepts from a white board session are digitalised and kept, other documents are formulated and improved upon along the way.

site mapping

To define the hierarchy and taxonomy through grouping of related content in places users would expect to find it.

user testing

Adapting the test scripts to each user types and scenarios, gives me the confidence to create test suites that encompass the whole product purpose.

clickable prototype

Depending on the user familiarity with the service or product, offering a mid or high fidelity prototype help gather evidence for a better design solution.


Sound project definition and game plan are paramount for its success. Planning research and UX tasks will not only motivate the team but also help meet deadlines and business expectations.

stakeholder presentation

From the project inception to its delivery, understanding and managing stakeholders is an art form in its own right. Setting key milestones and keeping a clear channel with all involved has helped me smooth out the unexpected.

spec document

Are spec docs still needed? Most likely yes, depending on the size of the team. They are a timely reference point and will help document the team's progress.