Scalable frontend architecture · React · TypeScript · REST APIs · Design systems · Performance & UX
Senior Frontend Engineer with 5+ years of experience leading frontend architecture and building production-grade React and TypeScript applications. I specialize in scalable component systems, REST API integration, state management (Redux, RTK Query), and pixel-perfect UI for data-heavy products. Experience across SaaS, banking (700k+ users), e-commerce, and logistics. I care about clean code, testing, Web Vitals, and agile delivery.
const rafael = {
location: "Cartagena, Colombia 🇨🇴",
role: "Senior Frontend & Mobile Developer",
experience: "5+ years",
openToWork: true,
workPreference: ["Remote", "Hybrid", "LATAM"],
code: ["JavaScript", "TypeScript", "HTML", "CSS"],
technologies: {
frontend: ["React.js", "Next.js", "Redux", "Redux Toolkit", "RTK Query"],
mobile: ["React Native", "Expo"],
backend: ["Node.js", "Nest.js", "Express.js"],
styling: ["Tailwind CSS", "Bootstrap", "SASS", "CSS Modules"],
databases: ["MySQL", "Prisma"],
tools: ["Git", "GitHub", "GitLab", "Jira", "Figma", "Postman", "Sentry", "Storybook"],
testing: ["Jest", "React Testing Library", "Vitest"],
devOps: ["Jenkins", "CI/CD", "Vercel"]
},
architecture: ["SPA", "Component-based", "Design systems", "Responsive", "RBAC", "Multi-tenant"],
methodologies: ["Agile", "Scrum", "Kanban"],
softSkills: [
"Technical leadership",
"Problem solving",
"Clear communication",
"Continuous learning"
]
};🔹 Lead Frontend for a multi-platform SaaS ecosystem: 4 production apps (admin dashboard, POS, React Native mobile, white-label e-commerce)
🔹 Scalable component systems and design systems with Storybook — cut layout time by 60% in banking projects
🔹 REST API integration with RTK Query, auth interceptors, Redux Saga; payment gateways (Stripe, Square, Clover)
🔹 Quantified impact: +45% conversion (consumer loans), −60% operational losses (real-time dashboards), −75% reporting time
🔹 Performance & quality: Lighthouse, Web Vitals, Jest, React Testing Library, Sentry monitoring
- 🔭 Lead Frontend at Tikketfy — 4-app ecosystem (web + mobile)
- 🌱 Sharpening performance (Web Vitals, Lighthouse) and backend integration (Node, Prisma)
- 💼 Open to opportunities — Remote / Hybrid · LATAM · Frontend & Lead roles
- 👯 Interested in open source and side projects
- 💬 Ask me about React, Redux, TypeScript, React Native, REST APIs, design systems
- ⚡ Fun fact: I love squeezing performance out of UIs and keeping code clean
Event management & ticketing platform — Full-stack ecosystem I lead on the frontend.
|
React · Redux · TypeScript Admin dashboard for event organizers: analytics, RBAC, real-time metrics. |
React Native · Expo · Redux iOS & Android app: tickets, QR codes, push notifications. |
React · PWA · Redux Web POS for ticket validation: offline mode, QR scanning. |
Stack: React.js · React Native · Redux · RTK Query · TypeScript · Node.js · Express · MySQL
Highlights: Event & ticket management · Mobile (iOS/Android) · Payment integration · QR validation · Real-time dashboard · PWA POS · Push notifications
💼 Open to roles: Frontend Developer · Lead Frontend · Remote · LATAM
📧 Email: rafewui@gmail.com
🔗 LinkedIn: Rafael Alvarez
⭐ From rafedev · Made with ❤️ and ☕