Composer
2026 – Now
Designing AI interactions as a founding team member, now working directly in code.
I’m Gui.
Lead Product Designer at Klaviyo, where I’ve worked since 2018. Based in Boston.
These days I’m designing Composer’s AI interactions, working directly in the code. My passion is refining experiences into something people love using.
Selected work
Email Builder
2019 – 2023
Redesigning the email editor around the features customers relied on.
Showing marketers which emails a shared edit will change.
Dynamic Content
2022
Replacing template code with dynamic values marketers can read and edit.
Earlier work & explorations
Thread Group
Thread Group · Client via Intrepid · 2015
Simplifying device setup and making network issues easier to diagnose.
MUPA
Personal graduation thesis · 2016
Turning UX pattern research into a tool for learning and comparison.
WBUR
WBUR · Client via Intrepid · 2016
Designing discovery around listeners’ interests and available time.
Qup
Intrepid internal product · 2014
Balancing host control and guest participation in collaborative playlists.
MakeMyTrip
MakeMyTrip · Client via Intrepid · 2015
Redesigning hotel search and booking for mobile.
Sartorius Pharma
Sartorius · Client via Intrepid · 2016 · Password required
A sales tool for Sartorius.
Extras
Mixed creative work
Side projects, illustrations, and interaction concepts.
Lately
Last 30 days on repeat
- OverthinkerCHVRCHES×10 plays
- Battery DeathNinajirachi×6 plays
- Poison PopEverything Everything×5 plays
- BrainrotTinashe×5 plays
1 / 10Listen on YouTube ↗
