Karen Ortiz
I design and build AI-powered web products, from architecture to the last pixel.
Software Engineer focused on Product Engineering & Web Experiences. I design systems, components, and agents that connect UX, infrastructure, and AI into production-ready products.
- Web architecture and development with Next.js, Astro, TypeScript, and decoupled stacks.
- Token-first design systems and npm libraries for distributed product teams.
- AI integrations (MCP servers, LLMs, automation) that enable non-technical teams.
I bridge engineering without the usual handoff friction.
Senior product thinking
I design with business goals, user behavior, and technical constraints in mind.
Built to ship
My work translates cleanly into systems, components, and production-ready code.
AI with intention
I use AI where it improves workflows, tools, or product value.
Low-friction collaboration
I work fast with founders, designers, and engineers across the full product cycle.
Product & UX Engineering
I define, design, and build new features or full products. Light research, UX/UI, prototypes, and fullstack development in the same flow.
Modern Web Experiences
I build sites, dashboards, and web apps integrating APIs, databases, and external services ready for production.
AI-Driven Interfaces & Workflows
I design and build context-aware interfaces where AI makes sense, turning it into agents and automations that improve your product and internal processes.
Design Systems & Internal Tools
I create or evolve your design system, component libraries, and internal tools so product, design, and dev work on the same foundation.
UX & Conversion Improvements
Data-driven optimization for active products. I analyze user flows, performance bottlenecks, and retention metrics to deploy targeted improvements.
Architecture & Tech Guidance
I guide founders and small teams to make good stack, architecture, and integration decisions. Thinking about what you'll need in 6 to 12 months, not just the next sprint.
Trusted by design-led companies & engineering teams
I partner with teams across LATAM, the US, and Europe that take product design, architecture, and applied AI seriously.
From early-stage startups to established product teams, I collaborate cross-functionally with Product, Design, and Engineering to ship web experiences, integrate AI into real workflows, and turn decisions into production code.
A few of the teams and brands I've worked with across industries and geographies.
- Remote-first collaboration with founders, PMs, designers, and engineers worldwide.
- Production work: landing pages, design systems, AI-powered tools, and full-stack platforms.
- Focus on craft, performance, and fast iteration across time zones.
Houston
Hong Kong
CDMX
Panama
New York
Madrid
San Francisco“Karen has demonstrated a deep commitment to excellence, consistently delivering high-quality frontend solutions. Her solid technical knowledge and ability to innovate set her apart.”
“Karen demonstrated outstanding expertise in UX/UI design, standing out for her proactivity and strategic mindset. Her ability to align product vision with brand identity made a significant impact on our business.”
“Her ability to work as part of a team, her creativity, and her attention to detail were key aspects that stood out in her performance. Her support and guidance were invaluable, allowing me to grow professionally.”
“An excellent colleague! Always cheerful, incredibly creative, and highly punctual. Her contributions to Spil Creative have been invaluable.”
“Dedicated and proactive, always eager to learn. Karen has done an outstanding job in every project, and I truly enjoy working with her.”
“Karen stands out for her intelligence, attention to detail, and ability to learn fast. She consistently brought clear solutions, meaningful improvements, and a strong user-centered perspective to every project.”
“Her constant willingness to learn has kept her at the forefront of her field. Karen has shown excellent communication skills with both team members and clients, ensuring timely delivery of high-quality projects.”
“Her commitment and professional ethics were fundamental to the success of our projects. She is an exceptional professional who brings value and quality to every project she is involved in.”
“Karen took complex requirements, broke them down, and turned them into clear, functional interfaces. She proposed UX improvements and ensured brand guidelines, accessibility, and performance were respected across every deliverable.”
“Karen has demonstrated a deep commitment to excellence, consistently delivering high-quality frontend solutions. Her solid technical knowledge and ability to innovate set her apart.”
“Karen demonstrated outstanding expertise in UX/UI design, standing out for her proactivity and strategic mindset. Her ability to align product vision with brand identity made a significant impact on our business.”
“Her ability to work as part of a team, her creativity, and her attention to detail were key aspects that stood out in her performance. Her support and guidance were invaluable, allowing me to grow professionally.”
“An excellent colleague! Always cheerful, incredibly creative, and highly punctual. Her contributions to Spil Creative have been invaluable.”
“Dedicated and proactive, always eager to learn. Karen has done an outstanding job in every project, and I truly enjoy working with her.”
“Karen stands out for her intelligence, attention to detail, and ability to learn fast. She consistently brought clear solutions, meaningful improvements, and a strong user-centered perspective to every project.”
“Her constant willingness to learn has kept her at the forefront of her field. Karen has shown excellent communication skills with both team members and clients, ensuring timely delivery of high-quality projects.”
“Her commitment and professional ethics were fundamental to the success of our projects. She is an exceptional professional who brings value and quality to every project she is involved in.”
“Karen took complex requirements, broke them down, and turned them into clear, functional interfaces. She proposed UX improvements and ensured brand guidelines, accessibility, and performance were respected across every deliverable.”
About me
Companies partner with me for my product sense + technical instincts.
I connect product thinking, UX, and engineering, so decisions make sense for users, the business, and the codebase.
I care about the craft, from the architecture and design system to the final micro-interaction in production.
I define scalable systems (design tokens, components, internal tools) that help teams move faster instead of starting from scratch every time.
I use AI with intention, turning it into workflows, agents, and tools that actually help teams ship better work.