Andrew Hol(z)brook

Professional Profile

A comprehensive overview of my professional journey and approach

Resume

Download my detailed professional history

Professional Highlights

  • 10+ years of software development experience
  • Expert in full-stack development and system architecture
  • Proven track record of leading successful projects

Work Experience

A chronological history of my professional journey

Chatbooks

March 2019 - December 2024

Senior Frontend Engineer

Supported web and cross-platform initiatives.

Key Achievements:

  • Optimized Flutter codebase by transitioning a mobile-first design to a fully responsive, desktop-ready solution, significantly improving cross-device performance.
  • Implemented Swagger/OpenAPI for streamlined code generation with React Query, simplifying mutation handling and improving API integration efficiency.
  • Launched a greenfield Next.js project, making key architectural decisions for scalable state management and form handling, laying the foundation for future development.
  • Led the development of a web cart, driving cross-functional collaboration and delivering a seamless shopping experience with improved performance.
  • Transitioned marketing site from WordPress to React + Prismic, modernizing the user experience and optimizing content management workflows.

Sling TV

February 2018 - March 2019

Senior Software Engineer

Developed core features using AngularJS, SASS, and Redux

Key Achievements:

  • Developed core features using AngularJS, SASS, and Redux, driving increased user engagement.
  • Consolidated AngularJS libraries, improving maintainability and reducing bundle size.
  • Modernized state management by transitioning to Redux, reducing bugs and improving application consistency.

MasterControl

January 2014 - February 2018

Software Engineer II

Individual contributor taking on a variety of software development tasks.

Key Achievements:

  • Received Innovation Award for the QuickNav feature, significantly reducing task completion time.
  • Designed stateful UI architecture using ngrx/store, optimizing user experience and system performance.
  • Led a team of junior developers, boosting team velocity and ensuring high code quality.

Projects

Detailed showcase of my work and contributions

Flutter Desktop

Chatbooks

Optimized Flutter codebase by transitioning a mobile-first design to a fully responsive, desktop-ready solution, significantly improving cross-device performance.

Flutter Dart Responsive Design

Next.js Marketing Site

Chatbooks

Launched a greenfield Next.js project, making key architectural decisions for scalable state management and form handling, laying the foundation for future development.

Next.js React TypeScript React Query Chakra UI

Web Cart

Chatbooks

Delivered a web cart, driving cross-functional collaboration and delivering a seamless shopping experience with improved performance.

React Redux Sass

WordPress to React Migration

Chatbooks

Transitioned marketing site from WordPress to React + Prismic, modernizing the user experience and optimizing content management workflows.

React Prismic CMS Express.js AngularJS

QuickNav

MasterControl

Received an Innovation award by utilizing JQuery, iframes, fuzzy filtering, and keyboard input to vastly improve efficiency of QA, Developers, and even the customer.

JQuery TypeScript CSS

Technical Expertise

My skills and technical capabilities

Key Technical Skills

React
Flutter
Next.js
Responsive Design
TypeScript
Tailwind CSS

Core Proficiencies

🏗️

Frontend Architecture

Designing scalable frontend architectures with modern frameworks and best practices.

✨

UI/UX Design

Creating intuitive and responsive user interfaces with a focus on user experience.

🎯

Technical Leadership

Leading development teams, making architectural decisions, and mentoring developers.

Technical Skills

🎨

Frontend Development

React
TypeScript
Next.js
Chakra UI
Tailwind CSS
HTML5/CSS3
📱

Mobile & Cross-Platform

Flutter
Dart
Responsive Design
🔄

State Management

Redux
React Query
ngrx/store
Context API
⚡

Performance & DevOps

Webpack
SEO
CI/CD
Testing
Code Optimization
🛠

Tools & Methods

Git
Agile/Scrum
Test-Driven Development
Code Review
Technical Writing
👥

Leadership

Mentoring
Project Planning
Technical Leadership