# Nathan Santos > Senior Product Designer | Design Engineering / Product / UX | AI/ML · FinTech · SaaS | MS HCI Location: New York, New York, United States Profile: https://flows.cv/nathansantos I design products that work — and build the systems that make them scale. I'm a senior product designer and design engineer with 6+ years of experience across B2B SaaS, fintech, and e-commerce — from early-stage startups to growth-stage platforms serving enterprise clients like Mastercard and PayPal. My background is broad by design. I work across the full stack of product design: leading end-to-end UX for complex workflows, building and scaling design systems from scratch, running user research and usability testing, and closing the gap between design and engineering. I care about the whole picture — not just how something looks, but how it holds up when real users interact with it under real conditions. I think in systems, work upstream with PMs and engineers, and build the kind of foundations that make teams faster over time. What I bring: → End-to-end ownership — from discovery and research through final delivery and QA → Systems thinking — I build design systems that scale across platforms and teams → Technical fluency — I prototype in code and partner deeply with engineering → Generalist range — visual design, interaction design, information architecture, growth design What I bring to the table: → End-to-end ownership — from discovery and research through final delivery and QA → Systems thinking — I build design systems that scale across platforms and teams → Design engineering — I prototype and build in code, working at the intersection of design and front-end development → Product thinking and development — I work upstream with stakeholders and cross-functional teams to shape problems, not just solve them, with a strong instinct for prioritization and business impact → Generalist range — visual design, interaction design, information architecture, research, and growth design Product Design · Product Management · AI/ML · Design Systems · Design Engineering ·Design Systems · Interaction Design · UX Research · Visual Design · Prototyping · Figma · Framer · Webflow · HTML/CSS · JavaScript · React · Usability Testing · Information Architecture · Stakeholder Management · Cross-functional Collaboration · Growth Design · Agile · Sprint Planning ## Work Experience ### Product Manager / Design Engineer @ Eulerity Jan 2025 – Present | New York, NY As senior product designer, I own end-to-end design across core product surfaces — campaign creation, reputation management, listings, and analytics — while maintaining the cross-platform design system and driving design-engineering alignment. Redesigned core campaign creation workflows for enterprise customers, reducing setup time by 65% and improving activation across high-value accounts Owned full design of Reputation and Listings management products used by 1,000+ multi-location businesses, saving brand managers 3–5 hours per week Documented and standardized 30+ shared design system components across web and mobile, reducing design QA cycles by ~40% Resolved 150+ design-debt tickets over 4 months in partnership with PM and engineering, cutting post-release polish work by ~30% Conducted usability testing with 15+ enterprise users to validate campaign builder improvements and uncover new friction points ### Product Design Intern @ Eulerity Jan 2024 – Jan 2025 | New York City Metropolitan Area Contributed to design of AI-powered features across Eulerity's marketing platform, working alongside senior designers and engineers in a fast-paced product environment Conducted user research and usability testing sessions, surfacing key friction points that directly influenced product prioritization Built reusable Figma components and documentation that became the foundation of Eulerity's design system Converted internship to full-time offer within 8 months based on contributions to core product work ### Student Assistant @ NYC Design Factory Jan 2024 – Jan 2024 | New York City Metropolitan Area ### Lead Product Designer @ Stealth Startup Jan 2023 – Jan 2023 | National Capital Region, Philippines Served as the founding designer for an early-stage startup, leading end-to-end product design from initial concept through validated prototypes Defined the product's visual language, interaction patterns, and UX strategy as the sole designer, collaborating directly with founders Delivered high-fidelity designs, interactive prototypes, and a foundational design system ready for engineering handoff ### Product Designer @ PayMongo Jan 2022 – Jan 2023 Owned core payment onboarding and product catalog experiences, increasing successful setup completion by 18% Led end-to-end design of PayMongo Pages, a no-code checkout builder — drove 28% adoption and reduced merchant setup time by 35% Redesigned complex banking connection flows through user testing with 40+ merchants, improving conversion and supporting payment volume growth Built reusable UI foundations for the merchant dashboard, cutting design-to-dev handoff time by 30% ### Product Designer @ BeautyMnl Jan 2021 – Jan 2022 Owned the redesign of core onboarding and authentication experiences, increasing sign-up completion by 12% Led user research and usability testing across multiple onboarding concepts to identify friction and guide conversion improvements Helped drive a cross-platform design system rebuild, standardizing 50+ components across iOS, Android, and web ### Founding UI/UX Designer @ ScanX Jan 2020 – Jan 2021 | Tokyo Owned the design of an internal analytics platform with 15+ data visualization modules used for operational decision-making Established the company's first scalable design system with 150+ components, including documentation and usage standards Conducted competitive analysis and heuristic evaluations to guide dashboard design and prioritization ### Information Technology Support Engineer @ DXC Technology Jan 2019 – Jan 2020 | Taguig, Philippines ### Python and Visual Basic Developer Intern @ SomnoMed USA Jan 2019 – Jan 2019 | Makati, National Capital Region, Philippines ## Education ### Master of Science - MS in Human Centered Design Pace University ### Bachelor of Science - BS in Information Technology University of Asia and the Pacific ### High School in Business Administration San Beda University ## Contact & Social - LinkedIn: https://linkedin.com/in/nathanieljason-santos - Portfolio: https://heynathan.framer.website/ --- Source: https://flows.cv/nathansantos JSON Resume: https://flows.cv/nathansantos/resume.json Last updated: 2026-03-29