Matisse VerDuyn, Developer in Jacksonville, FL, United States
Matisse is available for hire
Hire Matisse

Matisse VerDuyn

Verified Expert  in Engineering

Full-stack and API Developer

Jacksonville, FL, United States
Toptal Member Since
February 5, 2014

Matisse is an experienced full-stack web application developer specializing in Node.js, Vue, SQL, and NoSQL. A problem solver and entrepreneur at heart, Matisse has founded multiple startups and is always eager to learn new things and take on new challenges.


Node.js, JavaScript, Vue, MySQL, PostgreSQL, Amazon Web Services (AWS)...
Freelance (via Toptal)
Adobe Photoshop, Amazon Route 53, AWS Certificate Manager, Amazon S3 (AWS S3)...
Freelance (via Toptal)
Amazon Web Services (AWS), MariaDB, AWS Certificate Manager, Amazon API Gateway...




Preferred Environment

Amazon Web Services (AWS), Vue, MySQL, Node.js, JavaScript, PostgreSQL, REST, Responsive Web Design (RWD), APIs, Full-stack

The most amazing...

...application I've created used the Major League Baseball (MLB) PITCHf/x database to predict the pitch sequence and potential outcomes of at-bats.

Work Experience


2022 - PRESENT
  • Built a platform for passively collecting a company's own social media data and history as the user scrolls and interacts to build a graph of its extended network, then using that graph to identify potential high-quality leads.
  • Created an internal CRM for handling interactions as nodes and then connecting those nodes to manage relationships.
  • Developed a suite of productivity tools for content managers, including planning, organization, and static blogs.
Technologies: Node.js, JavaScript, Vue, MySQL, PostgreSQL, Amazon Web Services (AWS), Amazon DynamoDB, AWS Lambda, Amazon S3 (AWS S3), HTML, CSS, REST, Responsive Web Design (RWD), React, Full-stack, Web Development, APIs

Front-end Senior Software Engineer

2015 - PRESENT
Freelance (via Toptal)
  • Developed multiple administration panels, membership-subscription, and marketplace web applications for productivity, commerce, domotics, video streaming, and communication.
  • Simplified front-end framework development with custom state management libraries and CSS themes.
  • Built offline touch panel web applications for home automation, security, and control of multiple types of IoT devices.
  • Designed a system to generate text-only equivalent applications as counterparts to visible UIs.
Technologies: Adobe Photoshop, Amazon Route 53, AWS Certificate Manager, Amazon S3 (AWS S3), Amazon CloudFront CDN, JavaScript, CSS, HTML, Angular, Vue, Responsive Web Design (RWD)

Back-end Senior Software Engineer

2015 - PRESENT
Freelance (via Toptal)
  • Built administration panels for managing content, databases, moderation, file uploading, video streaming, and companion customer-facing websites.
  • Implemented payment systems for both membership-subscription and marketplace sites via Stripe and PayPal.
  • Developed custom authentication with multi-factor authentication and notification services via email and SMS.
  • Simplified complex code bases and migrated small-to-medium infrastructures to microservices and cloud solutions.
  • Designed the architecture of an application deployed offline in multiple physical locations.
  • Created an application for home automation, security, and IoT device management via multiple drivers and APIs.
Technologies: Amazon Web Services (AWS), MariaDB, AWS Certificate Manager, Amazon API Gateway, Amazon Route 53, Amazon S3 (AWS S3), Amazon DynamoDB, MySQL, Node.js, REST

Web Developer

2009 - 2017
Oppo Boppo, LLC
  • Developed an MLB PITCHf/x spider, data mining, and predictive analytics.
  • Built iOS games for brain training, education, and entertainment.
  • Created custom small business pay-per-page static websites.
  • Developed WordPress websites for small businesses, including eCommerce with PayPal.
  • Built landing and splash pages with email collection for mailing lists.
  • Scraped art gallery data and thumbs from the client's old website, all HTML, to reformat for their new website's database.
Technologies: JavaScript, MySQL


2012 - 2016
  • Built a fast and reliable web page archiver with social bookmarking, URL index, and search.
  • Created a portable and easily reusable back-end for a social network with members, followers or following, blocking, flagging, and comments.
  • Developed a Google Analytics integrated profile statistics dashboard.
  • Integrated a RESTful API with developer access through tokens and token secrets.
  • Implemented PayPal recurring payments at multiple payment levels with free trials.
Technologies: Amazon Web Services (AWS), JavaScript, MySQL

Perfect formatting and readable text that adapts automatically to every screen size. Aureum uses the golden ratio to simplify responsive web design, which keeps class definition requirements to a minimum, making HTML and stylesheets cleaner and more manageable.


Save a complete copy of any webpage. Permamarks was a web archiving tool that enabled users to create a full, working archive of their bookmarks while preserving the integrity of the CSS rules and certain JavaScript functionality.


Send password-protected photos to anyone. Scramblage uses a proprietary algorithm to encrypt images, keeping them shareable as PNGs of the same dimensions but not viewable unless you know the password to decrypt.


An MLB pitch sequence research and prediction tool. Using pitch data, the PITCHf/x database, StatFreak could predict the next pitch type and location during a live at-bat, given the history of the pitcher and their relationship to the batter and other similar batters.

Backyard Bandits

A game where a gang of squirrel backyard bandits are after the player's dog bones. Players can move the dog around the screen to catch the pesky critters in the act, collect acorns to purchase upgrades and unlock new characters, grab power-ups for an in-game boost, and avoid getting sprayed by a skunk.


A game where Pixit-making machines push Pixits from pumps at the top of the assembly lines and collect them in bins at the bottom. The problem is the machines aren't as reliable as they used to be, and sometimes, Pixits don't match the color of their bin, so players need to sort out the duds.

SQ Game

The player has a set of lights, but they're turned off. One by one, the player tries to turn them on, only to realize there's more to it than a few easy clicks—the wires have been crossed. The player must find and remember the connections to complete the round in the fewest moves possible.


Node.js, Vue, React, PayPal API, jQuery


Amazon CloudFront CDN, Adobe Photoshop


CSS, HTML, JavaScript, PHP, C, C++, Perl, Objective-C


Responsive Web Design (RWD), REST, Responsive


Amazon Web Services (AWS), AWS Lambda, Rackspace, Rackspace Cloud


MariaDB, MySQL, Amazon DynamoDB, Amazon S3 (AWS S3), PostgreSQL




AWS Certificate Manager, Amazon Route 53, Amazon API Gateway, Full-stack, Web Development, APIs, PayPal, Web Scraping

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.


Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring