Resume | Enrique Estrada

About

Senior Front-End Developer & UI/UX Engineer with 10+ years of experience building scalable, high-performance web applications.

Specialized in:

•React & modern JavaScript front-end architectures (SPAs, dashboards, enterprise apps)
•Custom WordPress & Headless CMS (Strapi)
•Laravel-based integrations
•UI/UX design and design systems

Focus areas:

•Performance optimization and Core Web Vitals
•State management & server state (Redux, Zustand, React Query)
•Resilient API integration (retries, error boundaries, fallback UI)
•Clean, scalable UI architectures
•Accessibility (WCAG 2.1, keyboard, focus management, ARIA) and long-term maintainability

Industries:

•Sports betting & gaming platforms
•SaaS products and marketing platforms
•Healthcare and banking applications

AI-assisted development:

AI-assisted development using Cursor, Claude, and ChatGPT to speed up debugging, refactoring, and delivery while maintaining high code quality standards.

Travel availability:

•U.S. (tourist visa) · Canada (eTA)

Technical Skills

Frontend Development

•React, Next.js (SSR, SSG, ISR, App Router), Remix
•State management (Redux, Zustand, React Context)
•Modern JavaScript (ES6+, Async/Await, Closures, Event Loop)
•Advanced CSS (Flexbox, Grid, Animations, Custom Properties, Semantic HTML, BEM, design tokens)
•Performance (Code Splitting, Lazy Loading, Core Web Vitals, virtualization for large lists, memory leak prevention)
•Accessibility (WCAG 2.1, ADA, Section 508, keyboard navigation, focus management, ARIA)
•SEO & Web Best Practices

UI/UX Design

•Design systems & component libraries
•End-to-end application design & UX architecture
•User research (interviews, usability testing, heuristic evaluation)
•Design-to-code translation
•Tools: Figma, Adobe XD, Balsamiq, Sketch

Development Tools

•Testing (Jest, React Testing Library, Cypress, unit & integration tests)
•Data fetching (React Query, TanStack Query, SWR, resilient patterns)
•Git & GitHub (branching, workflows, CI/CD)
•Modern build tools (Vite, Webpack)
•Node.js-based tooling
•WordPress (custom themes & plugins)
•Laravel framework
•Headless CMS (Strapi)
•REST APIs & GraphQL (retries, error boundaries)
•Storybook (component docs, visual regression)
•SQL databases (MySQL)

Professional Skills

•Agile / Scrum environments
•Cross-team & async communication
•Troubleshooting & root-cause analysis
•Security & scalability awareness
•AI tools for productivity and development

Portfolio

Strapi

BetAnySports

Role:Senior Front-End Lead

Tech:

StrapiReactRemix

Focus:Headless CMS, data fetching, scalable SPA architecture, Core Web Vitals

View Project

Wordpress

Insiders

Role:Senior Front-End Lead

Tech:

Wordpress

Focus:Custom theme, SEO, responsive design, content-driven marketing site

View Project

Wordpress

Godds

Role:Senior Front-End Lead

Tech:

Wordpress

Focus:High-traffic affiliate site, performance optimization, cross-browser compatibility

View Project

React

Crypto Tutorials

Role:Senior Front-End Lead

Tech:

React

Focus:React SPA, API integration, component architecture, state management

View Project

Wordpress

My Bookie

Role:Senior Front-End Lead

Tech:

Wordpress

Focus:Enterprise sportsbook UI, accessibility (WCAG), multi-brand consistency

View Project

CSS Variables

CSS Vars Practice

Role:Virtual Exercise

Tech:

CSS Variables

Focus:Design tokens, theming, CSS custom properties, dark/light mode

View Project View Source Code

Vanilla JS, Node.js

Vanilla JS API Fetch

Role:Virtual Exercise

Tech:

Vanilla JS, Node.js

Focus:Fetch API, async patterns, error handling, loading states

View Project View Source Code

Vanilla JS, Node.js

My PWA

Role:Virtual Exercise

Tech:

Vanilla JS, Node.js

Focus:Progressive Web App, service workers, offline-first, manifest

View Project View Source Code

React

React Shopping Card

Role:Virtual Exercise

Tech:

React

Focus:React state management, cart logic, component composition

View Project View Source Code

Work Experience

Confidential - Freelancer

Senior Web Developer

Current

•Working as a senior individual contributor on confidential client projects, delivering modern, high-performance front-end solutions aligned with business and product requirements
•Developing and maintaining production-ready user interfaces using React and TypeScript, with strong focus on code quality, performance, and long-term maintainability
•Building reusable, component-based architectures to support scalable and evolving applications
•Collaborating closely with product, design, and technical stakeholders to translate requirements into clean, efficient implementations
•Contributing across the full development lifecycle, from feature implementation to optimization and refinement of existing systems
•Writing unit and integration tests (Jest, React Testing Library) to ensure component reliability and reduce regression risk

Core stack: React, Astro, WordPress, TypeScript, Tailwind

Brand Builders Sportsbook

Senior Web Developer Lead

May 2024 - Aug 2025

•Led and managed a cross-functional team of 7 professionals, including front-end developers, designers, and marketing/content specialists within the online gambling industry
•Hired specifically to elevate the company's front-end and design practices, transitioning teams away from legacy workflows toward scalable, maintainable front-end architectures
•Played a key role in the development and evolution of the company's main brand platform (BetAnything.eu), supporting brand growth, performance, and content scalability
•Built and maintained high-traffic, marketing-driven platforms including affiliate websites, brand pages, and campaign landing pages
•Defined and implemented component-based front-end architectures to reduce maintenance effort and improve long-term productivity
•Oversaw delivery and maintenance of commercial websites, marketing platforms, and brand assets at scale
•Coordinated Agile/Scrum workflows across concurrent initiatives to improve delivery cadence and cross-team collaboration
•Provided hands-on technical leadership and mentorship, supporting developers through architectural decisions and modernization efforts
•Worked closely with stakeholders to align technical execution with marketing, product, and business goals
•Established testing practices (Jest, React Testing Library, Cypress) for component and E2E coverage, improving delivery confidence and reducing production bugs

Stack: React, Astro, WordPress, TypeScript, Tailwind

Prevent Security - BetUs Sportsbook

Senior Front End Developer - WordPress

Mar 2023 - May 2024

•Served as Senior Front-End Developer and technical lead, guiding a cross-functional team of 8+ developers and designers across high-traffic digital platforms
•Led the development of custom WordPress themes from scratch for multiple high-profile brands operating as large-scale sports media and editorial platforms
•Defined front-end architecture and component-based systems to support scalability, maintainability, and rapid content production
•Delivered 10+ high-impact WordPress projects, coordinating timelines, priorities, and quality across concurrent initiatives
•Collaborated closely with designers, content managers, and stakeholders, acting as a bridge between design, content, and engineering teams
•Mentored junior and mid-level developers through code reviews, technical guidance, and best-practice adoption
•Contributed to projects using Laravel for backend-driven features and React.js for interactive UI components
•Promoted agile workflows, continuous improvement, and shared ownership, resulting in stronger team alignment and productivity

Core stack: WordPress, PHP, Laravel, JavaScript, React, Advanced CSS

Assemble Studio

Front End Developer

Aug 2021 - Aug 2022

•Worked as a hands-on front-end and email developer delivering HTML email campaigns, banners, landing pages, and websites for pharmaceutical clients, adhering to strict brand, UX, and compliance requirements
•Collaborated closely with design teams to refine UX/UI practices and ensure consistency across regulated, content-heavy communications
•Contributed across the full project lifecycle, from requirements analysis and UX/UI design through final implementation
•Produced wireframes, prototypes, and design deliverables using tools such as Figma, Adobe XD, Sketch, and Balsamiq
•Developed reusable front-end components and templates to support scalable and maintainable delivery
•Created internal tooling using Node.js to improve development workflows, modularity, and team productivity
•Worked with dynamic content management solutions to support personalized, data-driven campaign execution at scale

Accenture

Web Developer Senior Analyst

Jul 2020 - Jul 2021

•Worked as a hands-on front-end and email developer within an enterprise marketing department during the pandemic
•Built and maintained HTML email templates, landing pages, websites, and digital marketing assets for high-volume, brand-driven communications, ensuring cross-client compatibility, performance, and visual consistency
•Developed reusable email and front-end components using HTML, CSS, and JavaScript
•Worked extensively with Salesforce Marketing Cloud at enterprise scale, including AMPscript, Data Extensions, dynamic content, and campaign deployments
•Supported audience segmentation, personalization, and end-to-end campaign launches
•Collaborated closely with designers, marketers, and stakeholders throughout the full campaign lifecycle
•Delivered marketing assets for enterprise clients, including Citi and Wells Fargo

Business Solutions - JazzSports Sportsbook

Technical Lead Manager

Nov 2017 - Dec 2019

•Led and mentored two cross-functional teams composed of front-end developers, designers, and marketing/content specialists (casino & sportsbook)
•Served as technical lead and point of reference for front-end and UI decisions across multiple high-traffic digital platforms
•Guided the modernization of front-end and design practices, helping teams transition away from outdated workflows and legacy approaches
•Defined technical direction, reviewed implementations, and supported teams in building scalable, component-based front-end architectures
•Oversaw delivery and maintenance of high-traffic commercial websites, email platforms, animated banners, and marketing assets
•Standardized processes, workflows, and best practices across teams to improve consistency, quality, and long-term maintainability
•Coordinated Agile/Scrum workflows across multiple disciplines and concurrent initiatives
•Provided ongoing technical mentorship, coaching developers and designers to raise overall team maturity and execution quality

Stack: WordPress, PHP, Advanced CSS, JavaScript

Prime Ideas - MyBookie

Technical Lead Front End

Feb 2016 - Oct 2017

•Led front-end development for high-traffic sportsbook and marketing platforms, operating as the primary technical reference for frontend and UI decisions.
•Played a key role in the development of a custom sportsbook platform and real-money payment flows, focusing on performance, reliability, and long-term maintainability.
•Defined and implemented reusable, component-based frontend architectures to reduce maintenance overhead and support platform growth.
•Mentored junior developers through code reviews and technical guidance, helping establish stronger frontend standards and best practices.

Core stack: WordPress, PHP, JavaScript, Advanced CSS

Double Digit

Front End and Email Developer

Sep 2015 - Feb 2016

•Owned the implementation of email campaigns, landing pages, banners, and client-facing websites in a fast-paced agency environment with tight deadlines.
•Ensured cross-browser and cross-email-client compatibility while maintaining performance and design integrity across multiple concurrent projects.
•Built modular, reusable UI patterns to enable faster iteration and consistent delivery across campaigns.
•Collaborated with design and project teams to translate creative concepts into structured, production-ready frontend solutions.

Experian Marketing Services

Front End and Email Developer

Aug 2012 - Oct 2015

•Delivered and maintained large-scale email and web campaigns for enterprise clients, ensuring cross-client compatibility, performance, and visual consistency across high-volume communications.
•Built reusable front-end and email components to support scalable delivery across multiple brands and campaigns.
•Collaborated closely with designers and stakeholders throughout the full lifecycle, translating requirements into reliable and maintainable UI implementations.
•Contributed to internal tooling and template systems to improve development efficiency, consistency, and long-term maintainability.