Hi I'm Ernesto

Senior UI/UX & Product Designer

With 9+ years in healthcare, finance, and SaaS, I design intuitive solutions for complex workflows. I balance strategy and craft—aligning teams, shaping projects, and delivering polished, testable designs through strong prototyping and UI execution.

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Skills

Figma

Expert in creating high-fidelity prototypes, wireframes, and interactive design systems.

Prototype Expertise

Advanced skills in crafting low-to-high fidelity prototypes to validate concepts, communicate ideas, and support usability testing.

Responsive & Adaptive Design

Ensures seamless experiences across devices and breakpoints with mobile-first thinking.

Visual Design Mastery

Combines layout, typography, and color theory to craft polished, user-centric interfaces.

Information Architecture & Systems Thinking

Designs scalable structures that support usability, discoverability, and clarity.

Design Systems

Builds and maintains design systems that ensure consistency, efficiency, and alignment with brand guidelines.

Front-End Collaboration

Strong partnership with developers for seamless handoff, pixel-perfect implementation, and design QA.

WCAG Compliance

Proficient in inclusive design, ensuring usability for diverse user needs and compliance.

Cross-Functional Collaboration

Proven ability to align design efforts with product, engineering, and business teams to drive user-centered solutions at scale.

User Research

Skilled in conducting user interviews, surveys, and usability testing to gather insights.

Miro/Mural/Lucid

Expertise in mapping user journeys, brainstorming sessions, and design workshops.

Workshop Facilitation

Leads design sprints, stakeholder workshops, and ideation sessions to align teams and accelerate solutions.

Design for Business Impact

Connects user needs with business objectives to drive measurable outcomes.

Data Visualization

Designs intuitive, visually compelling dashboards and reporting tools that surface actionable insights.

Driving Design Maturity

Advocates for UX best practices and fosters design culture across organizations.

Mentorship

Coaches junior designers, leads design critiques, and helps elevate team capabilities.

Portfolio

Designing with Purpose, Crafting Seamless Experiences

American Specialty Health

Control of Your Back Pain

Cross-functional Collab UX Research Visual Design end-to-end Design High Maturity UX
LPL Financial Password Protected

Proposal Tool & Document Redesign

Stakeholder Collaboration Saas Design Systems Data Visualization
Photon Infotech

Eyecare Network Site

Design Agency Enterprise Systems Client Workshops High Process Maturity Prototyping
Photn Infotech

Krispy Kreme Rewards

Mobile Design Design Agency Client Workshops Prototyping
American Specialty Health

Activity Tracker

Scalable Design System Consumer-facing UI High UX Maturity Org UX Alignment Accross Teams Mobile-First Approach Rapid Prototyping & Testing
MedImpact

Pharmacy Benefits Manager

Creative Discovery Complex Data & Inputs Internal User Tools Low UX Maturity Visual Design Elevation Process Mapping
Sharp Healthcare

Virtual Urgent Care

Resarch-Driven Process Data Analytics Heatmaps User Feedback Loops Patient-Centered UX Usability Testing & Insights
Quest Diagnostics

Lab Test Ordering

Lab Test Ordering UX iOS Mobile Design Design System Integration Streamlined Mobile Flows User-Centered Navigation
American Specialty Health

Event Landing Pages

A/B Testing for Optimization CMS implementation Visual Design Fast-Deployment
Adobe

Adobe Design Challenge

3-Hour Design Sprint Rapid Problem-Solving Playful, Creative Visual Design Feature prioritization

About

Profile Image
Name Ernesto Sillas
Email sillasernesto@yahoo.com

I’m a Senior UX/UI and Product Designer with over 9 years of experience transforming complexity into clarity across healthcare, finance, and SaaS. I design not just for screens—but for the humans behind them.

At the heart of my work is a deep respect for users and the systems they navigate. I’ve led end-to-end design efforts for products that power everything from enterprise benefits platforms to medication workflows—balancing strategic business outcomes with thoughtful, accessible design. My approach is equal parts curiosity, craft, and systems thinking. I’ve collaborated within high-UX-maturity organizations with established design systems, and I’ve thrived in fast-moving agency-style teams, as well as scrappy organizations —where ambiguity was the norm and agility was the only way forward. That range has made me highly adaptable, whether I’m embedding with cross-functional product teams, aligning with executive stakeholders, or rolling up my sleeves to iterate in Figma.

Where I truly come alive is in the prototyping phase—bringing ideas to life, stress-testing flows, and shaping how products feel through interaction. Rapid prototyping is more than a step in my process—it’s how I think through problems, uncover friction, and spark conversation across disciplines.

I don’t just ship polished UIs—I help shape the why behind the product. From conducting field research and mapping complex user journeys to building scalable design systems and mentoring junior designers, I bring a full-stack design mindset grounded in real-world impact. My work has supported everything from startups to some of the largest healthcare and financial organizations in the U.S., where usability isn't just a feature—it’s critical to safety, compliance, and trust.

Let’s build something that doesn’t just work—but matters.

Let’s talk UX, UI, research or just say hi!

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