Guillermo Guerra | Senior Frontend Engineer

About / Summary

A concise view of the engineering focus behind the work shown below.

Senior Frontend Engineer focused on React, Next.js, TypeScript, design systems, and production-grade UI platforms.

I build scalable frontend systems, reusable component libraries, API-driven interfaces, and business platforms connected to real production data.

My work spans current React and Next.js production projects, enterprise Vue 3 design systems, WordPress corporate sites, and AI-assisted development workflows.

Featured Projects

Selected case-study-style work focused on production UI architecture, business workflows, reusable systems, and real-world frontend edge cases.

For Crew Only

Current / Latest Work

Current production frontend project across API-driven product, checkout, cart, package, and special-request workflows. I focus on production-grade React and Next.js architecture, reusable components, design system improvements, accessibility, and data-backed edge cases connected to GraphQL and Salesforce-driven production data.

Reusable forms, modals, cards, filters, status lists, package flows, special requests, and data-driven UI
Async loading, validation, error, and empty states designed around real-world frontend edge cases
Production frontend architecture for checkout, cart, product, and operational workflows

React
Next.js
TypeScript
GraphQL
Salesforce Data Integration
Design Systems
Accessibility / ARIA

G-Kloud

Production Business Platform

Visit site

Production business platform built from scratch for proposal, invoice, admin, and internal workflow management.

Modular Next.js, React, and TypeScript frontend architecture with reusable UI patterns
Proposal and invoice workflows, admin tools, business process automation, and production deployment
Scalable component system designed to support future business workflows and internal tools

Next.js
React
TypeScript
Tailwind CSS
Node.js
Vercel

Hall of Beauty Med Spa

Delivered Production Project

Delivered production booking and marketing platform for a Med Spa business, built around service discovery, booking intent, and responsive conversion paths.

Booking flow with service selection, scheduling, availability logic, and clear validation states
Marketing site structure designed for trust, responsive UX, and conversion-focused user flow
Production deployment with Next.js, React, TypeScript, Tailwind CSS, and Vercel

Next.js
React
TypeScript
Tailwind CSS
Vercel
Booking UX

Bortech

In Progress

Active client project focused on frontend architecture, reusable UI patterns, and business workflow implementation. Details are intentionally limited while the project is active.

In-progress frontend architecture for business workflow screens and reusable components
Reusable UI patterns designed to support evolving client requirements
API and data integration work kept at a general level while the project remains active

Frontend Architecture
Reusable Components
Business Workflow UI
API Integration

NCLH Design System / Booking Platform

Enterprise Case Study

Enterprise frontend work across multi-brand booking flows, shared Vue 3 component libraries, and configurable design-system patterns.

Vue 3 and TypeScript modernization with reusable UI components, design tokens, Storybook, Chromatic, and versioned npm packages
Booking flow components and interactive deck plan experiences with SVG-based cabin and deck selection interactions
REST API integration with Scala / Play Framework services and close collaboration across product, design, backend, and business stakeholders

Vue 3
TypeScript
Design Tokens
Storybook
Chromatic
npm Packages
REST APIs

Belzona / WordPress Corporate Sites

Corporate / Marketing Sites

Corporate and marketing website work spanning WordPress templates, reusable components, plugins, dynamic content, and responsive frontend implementation.

Custom WordPress templates, plugins, Advanced Custom Fields, Pods, and reusable content structures
Adobe XD to responsive frontend implementation for corporate, marketing, and product-driven pages
Dynamic content and API/data integration patterns for maintainable business websites

WordPress
PHP
JavaScript
SCSS
ACF
Pods
Adobe XD

View project archive

Experience

Professional history by role and company. Project-specific detail lives in Featured Projects above.

Mar 2026 - Present
Frontend Engineer
Freelance / Contract
Delivering contract frontend engineering for client platforms and production business workflows.
- Current and recent work includes For Crew Only, G-Kloud, Hall of Beauty, and Bortech
- Builds React, Next.js, TypeScript, GraphQL, REST, Salesforce-connected, and Node.js-backed frontend workflows
- Owns reusable UI architecture, design-system improvements, deployment support, and production state handling
- Uses GitHub Copilot, OpenAI, and Claude as part of an AI-assisted development workflow
- React
- Next.js
- TypeScript
- GraphQL
- REST APIs
- Node.js
- Vercel
Aug 2022 - Mar 2026
Frontend Engineer
Norwegian Cruise Line Holdings
Built enterprise booking platform UI and multi-brand design-system foundations for cruise brands.
- Modernized Vue 3 and TypeScript frontend architecture across customer-facing booking flows
- Contributed reusable component libraries, design tokens, Storybook, Chromatic, and versioned npm packages
- Implemented booking flow and SVG deck plan interactions integrated with REST APIs backed by Scala / Play Framework
- Collaborated with product, design, backend, and business stakeholders on complex production UI requirements
- Vue 3
- TypeScript
- Design Systems
- Storybook
- Chromatic
- REST APIs
- Scala / Play Framework
Jun 2021 - Aug 2022
Full-Stack Developer
Belzona LLC
Built custom WordPress corporate and marketing sites with reusable templates and dynamic content systems.
- Created WordPress custom templates, reusable components, plugins, and maintainable content structures
- Used Advanced Custom Fields, Pods, JavaScript, SCSS, PHP, and WordPress theming patterns
- Converted Adobe XD designs into responsive frontend implementations for corporate and product pages
- Integrated APIs and dynamic data sources for product-driven and marketing-focused website experiences
- WordPress
- PHP
- JavaScript
- SCSS
- ACF
- Pods
- REST APIs
Jan 2017 - Jun 2021
Web Developer / Technical Lead
Get On Domain
Delivered client web applications and business tools using JavaScript, PHP, CodeIgniter, MVC patterns, and Bootstrap.
- Built dashboards, protected routes, and API-driven business functionality for client projects
- Implemented access-control logic, dynamic content, and custom workflow screens
- Led client project delivery across requirements, implementation, QA support, and production handoff
- Improved usability and maintainability through clearer navigation, frontend structure, and page behavior
- JavaScript
- PHP
- CodeIgniter
- MVC
- Bootstrap
- REST APIs

Skills / Technical Stack

The tools, frameworks, and delivery practices I use across production frontend systems.

Frontend Platforms

React
Next.js
Vue 3
TypeScript
JavaScript

Data & APIs

GraphQL
REST APIs
Salesforce Data Integration
Node.js
Next.js API Routes

UI Systems

Design Systems
Design Tokens
Reusable Component Libraries
Storybook
Chromatic
Accessibility / ARIA
Tailwind CSS
SCSS

Delivery & Collaboration

Vercel
Git / GitHub
Jira
Figma
WordPress
PHP
CodeIgniter
Scala / Play Framework

AI-Assisted Development

GitHub Copilot
OpenAI
Claude

Contact

Open to senior frontend engineering roles and production-focused contract work across React, Next.js, TypeScript, design systems, and API-driven UI.