Isaac Johnson — Senior Full-Stack Engineer

Emailhello@zackon.top
GitHubgithub.com/zackabrah
LinkedInlinkedin.com/in/isaac-johnson
LocationGrafton, NSW, Australia

Profile

Senior full-stack engineer with 10+ years’ experience delivering production web platforms across insurance, energy, real-time sports betting, mining technology and games. Deep expertise in React, TypeScript, modern JavaScript, design systems and complex interactive interfaces, backed by full-stack experience across Node.js, GraphQL, REST and WebSockets. Particularly strong at turning complex data and product requirements into fast, accessible and maintainable experiences—including real-time 3D visualisation with Three.js.

Selected impact

Created shared React and TypeScript architecture adopted by Origin Energy engineering teams.
Built customer-facing component systems with 90%+ test coverage and reusable WCAG patterns.

Core technologies

Front end

React, TypeScript, JavaScript, Next.js, Redux Toolkit, HTML5, CSS3, Sass, Material UI

Interactive & 3D

Three.js, WebGL, React Three Fiber, GSAP, Phaser, Unity

APIs & data

Node.js, Express, GraphQL, REST, WebSockets, MongoDB, PostgreSQL, Redis, Firebase

Quality & delivery

Playwright, Cypress, React Testing Library, Jest, Storybook, AWS, Docker, GitHub Actions, TeamCity, SonarQube

Practices

Design systems, accessibility/WCAG, performance optimisation, responsive design, CI/CD, agile delivery

Additional

C#, ASP.NET, Webpack, Babel, Kubernetes

Education & recognition

Certificate IV in Entrepreneurship and New Business TAFE Queensland · 2024
Bachelor of Information Technology (Software & Media) Griffith University · 2012–2016
Advanced Diploma of Interactive Entertainment Academy of Interactive Entertainment · 2007–2008
Academic Excellence Griffith University · 2012, 2013, 2014
Sony Foundation Scholarship Full second-year tuition · 2008

Professional experience

Professional Sabbatical, Volunteer Service & Independent Development

Jun 2024–Present

Undertook a planned career break, including volunteer service with Youth With A Mission from January 2025 across community development, education and outreach initiatives.
Maintained current technical practice through independent product work and R&D in React, TypeScript, Three.js/WebGL, React Three Fiber, Phaser, Unity and AI-assisted tooling.

Full-Stack Engineer · Manabotix

Remote

Nov 2023–May 2024

Built a React and Three.js operational visualisation that transformed live mining-fleet telemetry into an interactive 3D monitoring experience.
Designed the front-end data architecture for Python APIs and WebSocket streams, separating high-frequency telemetry updates from wider application state.
Reduced load times on complex 3D scenes through code splitting, asset-loading optimisation and render-loop tuning.
Established a modular, Storybook-driven component system that improved UI consistency, testability and delivery speed.

Full-Stack Engineer · Unibet

Remote · Contract

Sep 2022–May 2023

Delivered product features for a high-traffic, real-time sports-betting platform using React, Redux, Node.js and GraphQL.
Integrated live match-data and betting-odds feeds, designing resilient UI states that remained responsive during peak demand.
Introduced structured error logging across client and server flows, improving production issue diagnosis and incident resolution.
Led dark-mode and accessibility improvements across key betting journeys.

Senior Front-End Developer · Origin Energy

Remote / Hybrid · Contract

Jan 2021–Feb 2022

Built modular React and TypeScript components with 90%+ test coverage for customer self-service portals.
Created a shared React and TypeScript starter kit adopted by engineering teams, standardising project structure, testing patterns and onboarding.
Partnered with QA to integrate Playwright end-to-end coverage and improve reliability across customer-critical flows.

Senior Front-End Web Developer · Compare the Market

Brisbane

Apr 2016–Jan 2020

Replatformed the insurance-comparison product onto a universal React and Node.js architecture, improving performance, reuse and maintainability.
Built a reusable WCAG 2.0-compliant component library in collaboration with UX and accessibility teams.
Developed reusable quote-flow and form-validation architecture across product verticals, contributing to improved form-completion rates.

Front-End Web Developer · glu

Brisbane

Jan 2015–Mar 2016

Delivered bespoke full-stack applications, custom MongoDB services and WordPress products for small and medium-sized business clients; led UI/UX and client-facing website design.
Introduced a Git-based workflow and modular SCSS theming to improve collaboration and consistency.

Web Developer · The Creative Collective

Brisbane

Jan 2014–Dec 2014

Designed and built market-specific WordPress sites, improving user experience, load performance and SEO visibility.

Selected independent ventures

Social Simple

Founder / Lead Engineer · Part-time · Feb 2023–Present

Built AI-assisted content-automation tools for small-business marketing workflows using React, Next.js and the OpenAI API, including a unified dashboard for planning, scheduling and analytics.

Junklab Games

Founder · Independent studio · Jun 2020–Present

Designed and developed original web and mobile games in Phaser and Unity, including Brick Buster. Implemented gameplay systems, analytics and advertising monetisation.