Greddys Martínez
Senior Product Designer | AI-Driven UX | Enterprise SaaS
Senior Product Designer with 10+ years of experience certified in User Experience with recognition in interaction design by the NN/Group. Designing enterprise B2B experiences across FinTech, HR, and HealthTech. Strong focus on bridging strategy and execution, leading research, aligning cross-functional teams, and shipping high-impact solutions in Agile environments.
Upwork Certified
User Interface Design
NN/Group Certified
Interaction Design
Career
Experience
Sr. Product Designer
ITX Corp | Client: Paychex (Nayya, Flock, E-Verify, Indeed)
- ›Lead end-to-end design architecture for an enterprise HR SaaS platform with over 2.3 million users by making data-driven design decisions while acting as Staff Designer, aligning cross-functional teams around a unified product vision across multiple high-impact products.
- ›Apply UX fundamentals and accessibility rigor to data visualization in engineering-led environments, elevating usability, clarity, and visual consistency quality.
- ›Use evidence-based methods through heuristic reviews, usability feedback, and heatmaps using Maze, Hotjar, and UserTesting.com, continuously refining experiences based on research to redesign flows and reduce form completion time by 35%.
- ›Define design strategy, vision, and roadmap for several major, ambiguous products using Jira and Confluence.
- ›Take full ownership of design decisions and use Figma to present product enhancements regularly to senior stakeholders with clear rationale, handling feedback constructively and pushing back when needed.
- ›Define reusable UX patterns and components, improving consistency and scalability across multiple large-scale products.
- ›Identify and reduce design debt, consolidating duplicate components and improving system consistency.
- ›Build and implement a scalable React-based design system, defining reusable patterns, components, and documentation to reduce design debt and improve consistency across platforms.
- ›Apply layout, spacing, typography, and color fundamentals within component-based systems to maintain UI craft quality across enterprise-scale products.
- ›Structure information architecture for complex, content-heavy workflows, improving clarity and navigation.
- ›Produce wireframes, design mockups, and interactive prototypes using AI tools including Balsamiq, Figma AI, Copilot, and Framer.
- ›Launch AI-powered features using LLMs to improve user decision-making during enrollment, framing problems effectively by aligning user goals, key tasks, constraints, success criteria, and business goals prior to execution.
- ›Use AI such as Copilot, Lovable, Claude, and ChatGPT throughout the design workflow to synthesize research, generate early concepts, and prototype quickly, enabling the team to validate and refine experiences much faster.
- ›Reduce support tickets by 500+ and support call volume by 9,000+ calls per year through redesigned HR and hiring flows.
- ›Play a key role in exceeding the annual enrollment goal by 5,500 users, simplifying workflows to improve completion rates and user confidence.
- ›Work closely with cross-functional teams including Product, Engineering, Marketing, Finance, Compliance, and Research to align user experience with business and content goals.
- ›Partner with engineering teams in a component-based delivery model, defining states, variants, and responsive behavior to align UX strategy and delivery using Miro and Figma.
- ›Support and mentor junior and senior designers through regular reviews, exchanging feedback, and contributing to overall design quality.
- ›Create design documentation, best practices, and usage guidelines, enabling cross-team adoption of shared patterns.
UX/UI Designer
Alquilando S.A. | Client: PropTech Marketplace
- ›Designing and shipping end-to-end UX/UI solutions for a PropTech startup building a large-scale real estate platform serving the LATAM market.
- ›Established the company's user-centric foundation through Alan Cooper-inspired personas.
- ›Built a component system from scratch based on Google Material Design standards.
- ›Delivered high-fidelity UI designs and interactive prototypes, reducing implementation ambiguity and accelerating developer handoffs.
Freelance UX / UI Designer
Studio Hakuna | Client: Paramount App LATAM
- ›Conducted UX research to understand audience needs and behaviors for the Paramount App LATAM.
- ›Redesigned existing platform features, improving usability and overall user engagement.
- ›Developed wireframes, prototypes, and high-fidelity UI designs balancing user needs with business goals.
UX/UI Designer
Elevation | Client: Web Solutions for Nonprofits
- ›Delivered end-to-end UX/UI design across multiple nonprofit clients simultaneously.
- ›Designed and optimized e-commerce experiences for nonprofit fundraising platforms.
- ›Created marketing assets including HTML/CSS emails, brochures, and campaign materials.
Freelance UX / UI Designer / Graphic Designer
Multiple clients | Web and social media
- ›Delivered end-to-end UX/UI design for early-stage products, e-commerce platforms, and marketplaces across multiple industries.
- ›Designed and launched brand identities and digital experiences from 0→1, including websites, product interfaces, and design systems.
- ›Improved user engagement and conversion through optimized user flows, visual design, and marketing assets.
- ›Contributed to growth initiatives, including social campaigns, landing pages, and paid acquisition assets (Google Ads, email, social media).
- ›Designed and developed responsive interfaces using HTML/CSS, ensuring consistency across platforms.
Capabilities
Skills
Training
Education
B.F.A. Graphic Design
Universidad de las Artes · Guayaquil, Ecuador
UX Design Certificate
Google / Coursera
Stack
Tools
Recognition
Certifications
NN/Group UX Certification — Interaction Design
UX Certified Professional
Interaction Design Specialty
Advanced patterns for complex interactive systems and enterprise workflows
UX Management: Strategy & Tactics
Leading design teams, stakeholder alignment, and design ops
Measuring UX & ROI
Quantifying design impact through analytics, A/B testing, and KPIs
Journey Mapping
Mapping end-to-end user experiences across touchpoints and channels
Information Architecture
Organizing and structuring content for findability and clarity
Usability Testing
Planning, conducting, and analyzing usability studies
User Interface Design Guidelines
Applying evidence-based UI patterns and accessibility standards
Human-Computer Interaction
Foundational principles of cognitive science applied to design
Interaction Design Specialty
Advanced patterns for complex interactive systems and enterprise workflows
Advanced patterns for complex interactive systems and enterprise workflows
2023UX Management: Strategy & Tactics
Leading design teams, stakeholder alignment, and design ops
Leading design teams, stakeholder alignment, and design ops
2023Measuring UX & ROI
Quantifying design impact through analytics, A/B testing, and KPIs
Quantifying design impact through analytics, A/B testing, and KPIs
2022