julianjuillerat@gmail.com
+34 680 12 84 03
Product designer with an engineering background, specialised in making complex, technical products usable and human. I own design end to end — research, flows, UI, systems — and work AI-native, prototyping at production fidelity to validate in days, not weeks.
Experience
2025 — Present
North
Product Designer · Barcelona
- ·Redesigned a deep-tech AI-evaluation platform end to end — corrected its structural model and cut the 0→1 set-up flow from ~30–40 steps to 7.
- ·Handed off in production-fidelity HTML — engineering shipped the full rebuild in two weeks, in time for a relaunch — its first real user cohort, 500+ sign-ups.
- ·Client lead for a two-market competitive benchmark for a French bank — ran the delivery with a two-person research team, 14 platform analyses across Spain and Portugal.
- ·Unified a regulated bank's digital ecosystem — trading, payments, everyday flows — onto the bank's own design language.
2023 — 2025
Human Call to Action
UX/UI Designer · Barcelona
- ·Designed accessible, responsive interfaces to WCAG 2.2 across client projects.
- ·Brought over-budget projects back within scope through hands-on delivery and close client communication.
2020 — 2021
Harbro Ltd
Design Engineering Intern · Glasgow
- ·Cut material use 15% by redesigning an industrial product to meet 2030 EU plastic regulations, preserving function and durability.
- ·Managed the project's budget and timeline; delivered on both despite COVID constraints.
Education
2022 — 2023
Master's · UX/UI Design
Escola Superior de Disseny (ESDI) · Barcelona
2017 — 2021
BEng Product Design Engineering (2:1)
University of Strathclyde · Glasgow
Skills
Design
Product design · UX/UI · interaction · UX writing · prototyping · design systems
Research & strategy
User research · competitive benchmarking · personas & journeys · heuristic evaluation · product strategy
Ways of working
End-to-end ownership · cross-functional collaboration · stakeholder management · design QA · agile
AI & tools
Designing for AI / LLM products · AI-assisted prototyping · Figma · Miro
Languages
EnglishFluent
SpanishNative
FrenchConversational
ItalianConversational