Using inter-beat interval measurements from wearable devices, such as the Apple Watch, resolve users' daily HRV score for the day to help advise the type of workout, recovery, or other activities they should be tackling for the day. Whether it be an all-out personal-record breaking workout, or a recovery day, with HRV data the users would be able to get the most tailored plan for their day. The project included working with the engineering, product, and design teams to generate the HRV scores within their app, to connect with other providers like Spren, and also began talks with various builders to create custom wearable hardware for HRV and other measurements.

An art game where players grow a tree over time in a glass terrarium environment underwater. The earth is in a post apocalyptic state, where the only place anything can grow is under the protection of the deep sea. The terrariums have certain controls for temperature, air mixtures, seasons and more which affect the tree's growth, which is in turn determined by it's seed's genetic code. This genetic code is encrypted as a NFT on the blockchain, and the timeline of environmental factors are also minted into the blockchain to take a snapshot in time. The marketplace is used to trade terrarium equipment for different types of environmental controls, as well as buy/sell/trading produce from the trees, including new seeds. The whole game is governed by seed holders in a DAO, and the marketplace is inclusive of third party game objects, as well as a place for third party entities to license anything from the game for anything else.

This is currently under development and built using Unity and utilizes Ethereum, IPFS, and other technologies.

Created a Flutter app that can encrypt (AES-256) any type of file and store it on IPFS/Filecoin for free. It could be run on any device.

Originally it was built as a Ruby on Rails web-app, with a traditional Postresql backend, but shifted to a more web3 and platform inclusive app.

Joined the Healthi Team as the VP of Product/CTO to rebuild the product team with former co-founders of Priime, Joe and Andrew. Hired lead designer, designers, senior mobile engineers, QA engineers, devops, project/product managers. Also helped build the marketing team, registered dietitian team, and more.

Focused on product stabilization and growth. The tech required an overhaul and stabilization, which was done with zero impact to the business and set the product up for long-term success. Modernized the user experience, design, and interface. Worked on development and project processes, team culture, and maintained the highest level of product quality.

Worked on product growth through user research, industry research, and product prototyping and testing.

Created an e-commerce store and test result interface for Million Marker from scratch. Leveraged Ruby on Rails and best security practices to create a modern e-commerce site with payments through Stripe, interfacing with a medical testing lab for fulfillment and tracking, and finally delivering lab test results to end-users.

Developed the PRM Protocol whitepaper from scratch. This protocol is built on the Ethereum blockchain, and maintains proof of ownership through phash indexing, staking, and a modified Token-Curated-Registry mechanic that incentivized good behavior. I worked through all legal considerations with our legal counsel to ensure SEC compliance or future compliance, raised a small private token pre-sale, and worked with leading blockchain experts to proofread and ensure it's validity and usefulness.

For Land Rover's latest campaign, I worked on their nationally televised commercial by producing and shooting the stills portion of the television commercial and other marketing collateral.

Developed a highly responsive and powerful RAW photo editing process on the iOS' new Metal technology, that could render CIFilter changes 10x faster than the leading competitors by using Metal and avoiding the GPU to CPU bottleneck. Supported editing actual RAW images up to 150 megapixels with render times of less than 100ms on even an iPhone SE.

I photographed Land Rover's flagship car in Iceland for their latest marketing campaign. The premise was "a road less traveled" and was focusing on the idea of being more tangible and relatable to the target audience.

A photo discovery and consumption tool that would learn what photos are interesting to the viewer at that time, and surface more of that type of content. Content pulled from photographers that were followed already on Flickr, but also a few degrees deep of other followers of those you follow. Fully built with Ruby on Rails and JQuery, it allowed for quick and beautiful viewing, fast commenting and liking, and was the "go to" consumption of Flickr photos. It eventually went on to become the start of Priime, though the ultimate product changed.

Created live stat push notifications for live sport events that would update users on iPhone. The notifications came faster and more accurately than any other sport app out there. The notifications included both stats and other information, including personalized messages that included the person's interest, favorite players, rivalries, fantasy games, as well as news that would be relevant to friends and family. This was built on a custom backend system built with ruby, rabbitmq, and other technology.

Created a blogging system from scratch on a Ruby on Rails product, which included posting blog posts via email. It was used by professional athletes and media outlets.

Unlock/Lock a Windows workstation using proximity of a bluetooth device, such as the Trello phone. Worked closely with the WIDCOMM bluetooth stack.

Created a windows app that would generate a One-Time-password for multi-factor authentication that was run on any Windows machine. This was fully customizable as a white-labled solution.

Spoke at an event at McGill University to business school students about startups, investors, and tech.

With so many services competing for your pixels, it’s getting harder and harder to keep up with the best images from your contacts. It’s something developer Arthur Chang calls “photo consumption fatigue,” and he believes he has a solution.

"Art Chang is an amazingly talented photographer who creates beautiful images that contain deep personal meaning and reverence for the people and places he connects with. He’s also one of the most eloquent people we know when it comes to discussing why photography matters and what it means to build community through mobile photography. "

Founder and CEO of Priime, Inc.

Arthur is the CTO and VP of Product for Sunshine Health Studios (DBA Healthi), working on product design, planning, growth, and engineering. He combines his education (B.S. in Computer Science at UC Santa Barbara, College of Engineering), experience in software engineering, and the founding of multiple startups, with his passion for community and consumer products to drive design, development, growth, and continued product success.

Advisory role for Snapwire. Focused on product development, engineering, and the photography community.

Helping jumpstart the expansion of Fittr India into the United States and globally.

Tasks included:

1. Building the framework of Fittr Inc. employment, team, and structure
2. Creating the short term and long term roadmap
3. Putting the framework together for the product (storyboards, wireframes, prototype)
4. Establishing objectives and milestones for the future of expansion
5. Creating the foundation for the leadership team

Fanvibe was acquired by beRecruited in June of 2011 and the new role at beRecruited has become the lead of product and engineering.

Responsibilities involve product design and management, as well as technology development.

beRecruited is the nation’s largest online college athletics recruiting platform, connecting high school athletes to college coaches.

beRecruited.com has active athlete profiles representing more than 22,000 U.S. high schools and 180,000 high school teams. In the past two years, beRecruited athletes have reported commitments to more than 2,000 NCAA, NAIA and NJCAA institutions.

Product and technical co-founder of Y Combinator backed Fanvibe. Aquisition in 2011 by beRecruited.

Design and development of real-time sports platform providing live sport stats notifications, sport predictions and social backend system on a cloud hosted environment.

Development of iOS platform support for Fanvibe and NBA.com iOS products.

Management and development of a live updating Fanvibe.com web frontend with engineering and design team.

Design and development of robust and scalable API providing Fanvibe’s social sports platform features to mobile applications and web front-ends for partner products such as the official NBA GameTime mobile properties and NBA.com.

Continuous product design to optimize opportunities within dynamically changing needs, trends, and markets.

Developing and optimizing Yardbarker.com front and back end components and features to help further enhance sport social media and networking to the world. Improving and implementing new technologies including Ruby on Rails, advanced Javascript, CSS, XML, SQL, and libraries such as Prototype, JQuery, Scriptaculous, and more. Utilized tools from Facebook, Twitter, Google, and more.

Yardbarker acquired by Fox Sports.

Co-Founder and developer of Browseology. Created real-time collaboration solution with zero barrier of entry. Maintain and develop destinations for the technology, as well as new features and distribution options.

Research and develop enterprise security products for desktop and mobile platforms. Develop applications for identity and access management using cryptographic algorithms, security-conscious client and server side procedures, and secure user-friendly user interfaces. Technologies used include Visual Studio 2005, MFC, CryptoAPI, WIDCOMM Bluetooth Stack, certificate authentication, IIS 7, Exchange 2007, Windows Mobile, using many different programming languages including C, C++, Java, and more.

Volunteered with logistics and photography for many Relay for Life events around Ventura County, Santa Clara County, and other regions.