Daniel Lopez
Senior Software Engineer · Frontend Architecture & Design Systems
Summary
Senior frontend engineer with 9+ years building complex web applications, design systems, and scalable system architecture. Early frontend engineer on Cisco Tetration (later Cisco Secure Workload), one of five frontend engineers on a product that scaled to a 120+ person engineering organization and $100M ARR. At Tailored Brands, staff-level scope: owning frontend architecture, leading a team of 3, and shipping high-traffic consumer experiences. Deep expertise in React, Next.js, TypeScript, and AI-native engineering.
Experience
- Own frontend platform architecture — structural patterns, module boundaries, and composable APIs adopted across the frontend org.
- Lead a team of 3 engineers: technical direction, unblocking, and mentoring on React, component APIs, testing, and system design.
- Design-system architecture: hierarchical React components, shared primitives, composition conventions, and docs used by multiple product teams.
- Ship high-traffic retail experiences with performance, resilience, and coverage (unit, integration, E2E) as first-class constraints.
- Day-to-day AI-native engineering with Cursor and Claude — architecture, reviews, and delivery without trading away quality.
- Built an internal design system from scratch in React, TypeScript, and Styled Components, with tests at every layer.
- Shipped consumer-facing features end-to-end in a small, fast-moving startup.
- Developed an internal design system and component library in React / TypeScript for cohesive UI across the core application.
- Researched, scoped, and delivered features from inception to production; extracted high-value components from the monolith for shared reuse.
- Helped take the product from zero to market during the highest-leverage phase of a fast-growing security platform.
- Built data-rich visualizations and dashboards with AngularJS, D3.js, and Sass for enterprise network security and workload management.
- Authored a BEM-based Sass architecture adopted by a 120+ engineer organization; integrated Cisco’s design library with in-house styling.
- Developed and A/B tested e-commerce features on high-traffic retail surfaces; analyzed post-deploy metrics to evaluate impact.
- Full-stack JavaScript in an agency environment — AngularJS, Node.js, and modern CSS preprocessors.
Skills
Languages. TypeScript, JavaScript, HTML, CSS, Sass
Frontend. React, Next.js, Styled Components, SCSS modules, Flexbox / Grid, Responsive layout
Architecture. Frontend architecture, Design systems, Component libraries, Frontend platform, Module boundaries
AI-native. Cursor, Claude, AI-assisted architecture & review
Backend. Node.js, Express, REST APIs, Prisma, Postgres
Quality. Unit / integration / E2E, TDD-oriented workflows, CI/CD, Performance at scale
Education
B.A. Sociology, University of California, Santa Cruz, 2010 — 2012. 3.45 GPA
Developer Bootcamp, Codify Academy, 2015 — 2016. Full-stack web development fundamentals
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