Fintech SaaSNomo
A digital bank account, designed end to end as a paid add-on to an accounting SaaS
Read the Nomo case
+22% MRR
Where Product, Business & Design meet.
From Research to Pull request.
That’s where you’ll find me. I’m Fran, a product builder in Barcelona. 9+ years in fintech and SaaS, shipping products that move metrics.
0→1 cases
Travel-techGrowPro
Turning a services company into a product one, with an omnichannel experience
Read the GrowPro case
8 → 1 tools
Iterations
Invoice checkingTalenom
Heavy users validated scans with the tab key, used to other software. A layout that follows the keyboard, not the scroll
−33% time on task
Reconciliation rulesEasor
Reconciliation rules delighted the few who found them. Making them easy to find and set up for everyone else
5% → 22% adoption rate
Built with AI
Vibe designSkuadz
AI (Claude, Gemini) in design delivery, producing a Design System and DESIGN.md the team reuses
Claude · GitHub
Vibe codingMyTrainingPal
Fitness SaaS where AI moved into execution: Figma designs turned into working code through MCPs
Figma MCP · Claude
Fit check
My 5 design principles.
Vote on each principle and see if we’re a fit.
AI speeds up the making, not the judgment
AI makes screens cheap, not right. Speed without judgment just ships mistakes faster.
Create beautiful things, well crafted
What’s good should look beautiful. What’s beautiful should work.
Understand the problem before designing the solution
Design without understanding is decoration. Research and context come first.
What isn’t measured can’t be improved
Every design decision gets validated with data. Intuition proposes, metrics decide.
Stay close to the people you design for
Research is a habit, not a phase. Talking to users keeps the product honest.
That’s all of them.
Method
Value loops
Short loops to move forward with more precision: frame a hypothesis, ship the smallest thing that tests it, measure, learn and go again.
Problem
Solution
User research
“We already know what our users want.”
- Hotjar
- Maze
- Claude
Hypothesis, Opportunity Solution Tree
“Why focus on this and not everything else?”
- Miro
- Notion
MVP, Impact/effort matrix
“Why not build the whole thing?”
- Figma
- Claude Code
- Jira
A/B testing, Design System
“There’s no evidence this is better.”
- Storybook
- Mixpanel