John Quintal is a freelance software engineer with more than 20 years of industry experience, with expertise in web development and a broader background spanning software design, systems integration, and full-stack delivery. He has worked across a wide range of technologies over the years, including React, Node.js, Next.js, React Native, Laravel, CakePHP, C#, Perl, MSSQL, MySQL, GraphQL, and AWS, giving him a practical view of how to build software that fits real business needs. His recent work includes building a drag-and-drop CMS for a vehicle sales platform, supporting client-specific React components, and helping deliver custom software for organisations ranging from banks to industrial clients. He has also developed CI/CD pipelines, Docker-based monorepo tooling, serverless applications, and integrations with services such as Twilio, DocuSign, and identity verification platforms. John brings a steady, problem-solving approach to projects, with a strong focus on maintainable code, useful features, and getting things shipped without unnecessary drama. He is comfortable joining an existing codebase, improving it, and working across the stack where needed. For clients looking for someone dependable who can handle web work especially well, while still drawing on a broader engineering background, he is a solid choice.

John C. Quintal

John Quintal is a freelance software engineer with more than 20 years of industry experience, with expertise in web development and a broader background spanning software design, systems integration, and full-stack delivery. He has worked across a wide range of technologies over the years, including React, Node.js, Next.js, React Native, Laravel, CakePHP, C#, Perl, MSSQL, MySQL, GraphQL, and AWS, giving him a practical view of how to build software that fits real business needs. His recent work includes building a drag-and-drop CMS for a vehicle sales platform, supporting client-specific React components, and helping deliver custom software for organisations ranging from banks to industrial clients. He has also developed CI/CD pipelines, Docker-based monorepo tooling, serverless applications, and integrations with services such as Twilio, DocuSign, and identity verification platforms. John brings a steady, problem-solving approach to projects, with a strong focus on maintainable code, useful features, and getting things shipped without unnecessary drama. He is comfortable joining an existing codebase, improving it, and working across the stack where needed. For clients looking for someone dependable who can handle web work especially well, while still drawing on a broader engineering background, he is a solid choice.

Available to hire

John Quintal is a freelance software engineer with more than 20 years of industry experience, with expertise in web development and a broader background spanning software design, systems integration, and full-stack delivery. He has worked across a wide range of technologies over the years, including React, Node.js, Next.js, React Native, Laravel, CakePHP, C#, Perl, MSSQL, MySQL, GraphQL, and AWS, giving him a practical view of how to build software that fits real business needs.

His recent work includes building a drag-and-drop CMS for a vehicle sales platform, supporting client-specific React components, and helping deliver custom software for organisations ranging from banks to industrial clients. He has also developed CI/CD pipelines, Docker-based monorepo tooling, serverless applications, and integrations with services such as Twilio, DocuSign, and identity verification platforms.

John brings a steady, problem-solving approach to projects, with a strong focus on maintainable code, useful features, and getting things shipped without unnecessary drama. He is comfortable joining an existing codebase, improving it, and working across the stack where needed. For clients looking for someone dependable who can handle web work especially well, while still drawing on a broader engineering background, he is a solid choice.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
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Language

English
Fluent

Work Experience

Senior Software Engineer at Vyro
January 1, 2024 - January 1, 2024
Developed a drag-and-drop CMS integrated with Vyro's Vehicle sales and inventory platform, enabling non-technical users to create pages using React components (Vehicle Search filters, Forms, Vehicle Cards) with real-time content updates. Used Chakra UI to create themable components aligned with showroom branding without code changes. Supported client-specific components, contributing to CMS deployment for Giltrap and the Commonwealth Bank to facilitate vehicle loans.
Full-Stack Software Engineer (Casual Contract) at Ascension Cloud Solutions
January 1, 2023 - January 1, 2023
Added features and maintained apps built on ReactJS, NodeJS, MySQL, and GraphQL. Built a CLI tool to scaffold a Docker-containerised NextJS and NestJS monorepo. Created a CI/CD pipeline to deploy a React site and NodeJS API to AWS EC2 using CodeDeploy and Bitbucket Pipelines.
Web Developer at Devika
January 1, 2019 - January 1, 2023
Developed and maintained projects using React, React Native, NodeJS, NextJS, and configured for TypeScript/JavaScript workflows. Contributed features and fixed issues for major client ClevaQ. Built serverless applications on AWS (DynamoDB, SQS, EC2) ensuring seamless integration and performance.
Senior Web Developer at Digital Carpenter
January 1, 2016 - January 1, 2019
Researched and implemented identity verification with Vix Verify, online signatures with DocuSign, and IVR with Twilio. Developed a standalone IVR system using Laravel and Twilio API, including voiced menu options to improve customer interaction.
Web Developer at Studio IQ
January 1, 2010 - January 1, 2016
Developed web applications using CakePHP, MSSQL, C#, and Flash/ActionScript; built commercial sites (e.g., fraternityclub.com.au) to improve engagement. Contributed to IQ LINK, a mine site solution platform, leveraging CakePHP and MSSQL for safety documents, visitor onboarding, and chemical safety datasheets.
Senior Interactive Developer at Internetrix
January 1, 2006 - January 1, 2010
Maintained, developed, and deployed the flagship CMS Freestyle. Developed and deployed a web-based email marketing tool Connect. Both applications were written in Perl, HTML and JavaScript with a MySQL database.
Computer Science Tutor at School of Computer Science and Software Engineering
January 1, 2005 - January 1, 2006
Computer Science Lab tutor and assignment marker for 1st, 2nd, and 3rd year subjects (including a Web development subject).
Software Designer and Developer (Summer Work Experience) at Nortel Networks Technology Centre
January 1, 2004 - January 1, 2005
Developed software to integrate with mobile device testing software, including a DLL whose exported functions were used by a Visual Basic application to monitor and automate the test suite.

Education

Bachelor of Computer Science (with Distinction) at University of Wollongong
January 11, 2030 - April 2, 2026
Electrical Engineering (Advanced Diploma) (with Distinction) at Illawarra Institute of Technology - Wollongong
January 11, 2030 - April 2, 2026
Electrical Trade (Cert III) (with Distinction) at Illawarra Institute of Technology - Wollongong
January 11, 2030 - April 2, 2026
Occupational Studies - Electrical/Electronic (Certificate I) (with Distinction) at Illawarra Institute of Technology - Wollongong
January 11, 2030 - April 2, 2026

Qualifications

BHP Medal for Best Academic Results in Engineering and Manufacturing
January 11, 2030 - April 2, 2026
TAFE Achievement Award for outstanding achievement within the Faculty of Engineering and Manufacturing
January 11, 2030 - April 2, 2026

Industry Experience

Software & Internet, Professional Services, Media & Entertainment