Acerca de Aaron
Senior Frontend Engineer (Angular/React) — Modern UI & high performance
About
I help startups modernize and speed up their frontends. I work with Angular 15 and 18 (Signals, standalone, RxJS best practices) on refactors and product evolution, and on complex flows (onboarding/KYC, multi-step forms) with a focus on performance and accessibility.
In React, I build reusable modules, create custom hooks, Redux, and integrate Supabase, along with dashboards and component libraries based on a Design System.
My approach is pragmatic: clean code, iterative delivery, and measurable outcomes (Core Web Vitals, bundle size, completion rates).
What I deliver
- Faster pages, higher completion: Core Web Vitals tuned, slimmer bundles, smoother multi-step UX.
- Accessible, consistent UI: semantic structure, keyboard/ARIA, component libraries (Design System-ready).
- Predictable delivery: clear scope, short iterations, PR-first, weekly demos and acceptance criteria.
- Clean handover: before/after metrics, docs, and brief Loom walkthroughs.
Tech
Angular 14–19, Signals, RxJS · React 18, Vite, Redux Toolkit · Supabase (Postgres, RLS) · Nx/monorepo, CI/CD, Testing Library/Jest
Español
Bilingüe o nativo
Inglés
Competencia profesional básica
Acepta trabajo presencial
Madrid (hasta 50 km)
Experiencia
- OntopFrontend DeveloperAGENCIAS DE SUBCONTRATACIÓNnoviembre de 2021 - Hoy (4 años y 7 meses)• KYC flow development: Implemented complete solutions for compliance data collection and management, improving the onboarding process.• Email Templates System: Developed the template creation and utilization project, developing 80% of the platform's emails.• Design System: Contributed to the development of the internal component library based on a multi-platform design system, ensuring visual consistency across multiple products.• Cross-functional collaboration: Close coordination with design, backend, and product teams for agile deliveries and performance optimization
- FreelancerFrontend Developerenero de 2022 - noviembre de 2022 (10 meses)• Advanced components: Development of complex React components with advanced state and rendering optimization• Authentication systems: Implementation of secure authentication flows with JWT and OAuth• Dynamic forms: Creation of multi-step forms with custom validations and optimized UX
- GrowthMaster RemoteFrontend Developerjulio de 2020 - marzo de 2021 (8 meses)• Internal CRM: Developed a client management system using Angular with interactive dashboards and data visualization with ApexCharts• Design fidelity: Pixel-perfect implementation of designs from Figma.• Performance optimization: Implemented lazy loading and code splitting, improving load times by 30% Angular 10, TypeScript, ApexCharts, Figma
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Formación
- Frontend WebDevelopment2019Frontend Web
- Diploma in Entrepreneurship and Digital BusinessUniversidad Central de Venezuela2016Diploma in Entrepreneurship and Digital Business