israel@dev:~$ whoami --verbose
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Israel Herrera E.
> Full Stack JavaScript Developer
React-focused Full Stack Developer with 7+ years specializing in the React ecosystem (15+ years total in web development). Deep expertise in TypeScript, Next.js, Node.js, NestJS, GraphQL, and Micro Frontend architecture. Built production-grade applications for clients like Santander Group, scaling across Argentina, Mexico, Chile, Ecuador, and Brazil.
[EXPERIENCE]
7+ years
[PROJECTS]
20+
[COUNTRIES]
5+
[AVAILABILITY]
Open
[FEATURED_PROJECTS]
Projects
Reputation Manager
Multi-tenant SaaS platform for healthcare professionals in Ecuador. Automates patient feedback collection by sending SMS/WhatsApp messages 2 hours after an appointment, requesting a 1-5 rating, redirecting happy patients (4-5) to Google Reviews, and routing unhappy patients (1-3) to a private feedback form. Features a per-clinic dashboard, campaign management, CSV/Excel patient import, automated weekly reports, and a credit-based billing system with Stripe.
Oikos Escuela de Piano
Sitio web oficial para una escuela exclusiva de piano en Cuenca, Ecuador. Incluye hero slideshow, galería, testimonios, programas, FAQ, integración con WhatsApp y Google Maps, SEO optimizado con Schema.org LocalBusiness y soporte para Google Analytics.
Heraldos de Cristo - Ministerio de Caballeros
Sitio web institucional para el Ministerio de Caballeros Heraldos de Cristo. Incluye secciones de noticias, eventos con galerías, multimedia, documentos (reglamentos y formularios), tienda, directorio de la junta ejecutiva y presidentes por países, formulario de contacto con envío de emails, y panel de autenticación.
Experience
My journey as a web developer
React Frontend Developer
Construex
- ▸Developed and maintained a high-performance web platform for the construction industry in Latin America, serving companies, products, and services across the region.
- ▸Built reusable, accessible UI components using React, TypeScript, Shadcn/ui, and Tailwind CSS, improving development speed and design consistency.
- ▸Implemented SSR and SSG with Next.js to optimize SEO and page load performance.
- ▸Integrated REST APIs and custom hooks to manage complex application state efficiently.
React Full Stack Developer
Clever IT Group
↳ San Sebastian University — Atando Cabos
- ▸Developed two parallel web applications: a customer-facing platform and a Backoffice system for collaborators and employees.
- ▸Designed and consumed GraphQL APIs with Apollo Client and Server, enabling efficient, flexible data fetching across both applications.
- ▸Built scalable backend services using NestJS and Node.js, ensuring clean separation of concerns between client and server layers.
- ▸Managed project delivery through Azure DevOps, participating in CI/CD pipelines, sprint planning, and code reviews.
React Frontend Developer
SuperDigital by Santander Group
↳ Santander Group
- ▸Developed a client onboarding web application for one of Latin America's largest financial groups, scaling across Argentina, Mexico, and Brazil.
- ▸Architected and implemented a Micro Frontend architecture using React and TypeScript, enabling independent deployment and scalability across multiple teams.
- ▸Managed global application state with Redux, ensuring predictable data flow in a complex, multi-market fintech environment.
- ▸Wrote unit and integration tests using Jest and React Testing Library, maintaining high code coverage and reducing production bugs.
React Frontend Developer
Avalith
- ▸Developed the corporate website for Avalith, a technology consultancy firm, using React, Gatsby.js, and Tailwind CSS, focusing on performance and SEO optimization.
- ▸Implemented Static Site Generation (SSG) with Gatsby.js to achieve fast load times and improved search engine indexing.
- ▸Managed application state with Context API and custom React Hooks, keeping the codebase clean and maintainable.
Full Stack Developer
Freelancer
↳ Shaddai Solutions LLC (USA)
- ▸Designed and developed a CRM web application for a US-based client, handling end-to-end development from architecture to deployment.
- ▸Built dynamic, data-driven interfaces using React, Next.js, and Material UI, consuming GraphQL APIs via Apollo Client.
- ▸Delivered multiple web applications for various clients across different industries, managing projects autonomously.
Web Developer
Web Developer — Various Companies
- ▸Built and maintained 20+ websites and web applications for local clients across tourism, hospitality, and services sectors.
- ▸Developed custom WordPress themes and plugins using PHP, JavaScript, HTML5, and CSS3.
- ▸Managed MySQL databases including schema design, query optimization, and data migrations.
Skills
what I work with and what I'm learning
Languages
- JavaScript
- TypeScript
- PHP
- Solidity
Frontend
- React.js
- Next.js
- Vite.js
- Gatsby.js
- Redux
- Apollo Client
- React Query
- Vue.jslearning
Backend
- Node.js
- NestJS
- Express.js
- GraphQL
- Strapi
- Sanity
- Contentful
CSS / UI
- Tailwind CSS
- Shadcn/ui
- Material UI
- Styled Components
- Bootstrap
Database
- PostgreSQL
- MySQL
- MongoDB
- Firebase
- Supabase
Tools & DevOps
- Git / GitHub
- Jest
- Testing Library
- Storybook
- Figma
- Azure DevOps
- Nx
- Dockerlearning
- Postman
Cloud
- AWS
- GCPlearning
About me
Hey, I'm Israel — Senior Full Stack Developer with 15+ years of experience building web applications and 7 years specializing in the React/TypeScript ecosystem.
I've worked with companies like Santander Group, delivering scalable solutions across Argentina, Mexico, and Brazil, and collaborated with distributed teams across Chile, Ecuador, and the US. I care deeply about clean architecture, Micro Frontends, and building products that genuinely impact users.
Lately I've been diving into Web3 and Solidity — because I believe the next generation of apps will live on the blockchain, and I want to be part of that shift.
I'm currently looking for remote opportunities where I can contribute from day one, keep growing, and work with teams that take code quality as seriously as I do.
When I'm not coding, you'll find me playing saxophone 🎷 at my local church or drinking coffee ☕ while reading about what's next in tech.
