Stoyan Dimitrov Email & Phone Number

Engineering architect and founding (1st) engineer. Worked across the Dapp stack from low level solidity and go blockchain code, to backend node/nestjs servers and front end react and swift mobile apps.-Designed and build Optimism-Ethereum (L1-L2) canonical bridging if solidity for an ERC20 rebasing token with community governance across chains. https://github.com/eco-association/op-eco-Created cross optimism off-chain ERC20 bridges. Backend in nestjs with alchemy. Bridging stable coins between L2's (Base, Optimism, etc). - Experience with ERC-4337 account abstraction and optimism role-up based payments in USD backed stables. - Created 2D nonce utility for 4337 accounts to encode transaction data. https://github.com/eco/nonce-2d- Built a faucet that drips tokens to users based on their social OAuth accounts. Project employed web3auth sharding of user key into keyshares managed by social auth, local files and passwords- Created a Merkel based ERC20 token distribution system for airdropping to founding users of Eco token. https://github.com/helix-foundation/eco-claim- Build a NFT based ID system for linking social auth to an NFT for identity based token drips https:// github.com/helix-foundation/nft- Created a social identity sharing blockchain in golang with cosmos-sdk. Users were incentivized to share contact information with companies for tokens.- Build react-native and swift iOS apps that allowed users to link banking accounts and cards for in app points.- Interviewed and onboarded engineers onto the teamEco Inc website: https://eco.org/

Working on the intersection of the blockchain and mobile. Employing my skills in Kotlin and Solidity to build dapps and contribute to pre and post ICO projects.-Blockchain mobile app development, video streaming and content curation using crypto-currency-Ethereum solidity contract development using Truffle framework and OpenZepplin contract libraries

San Francisco, Ca, Us

Team lead for the android, android tv, and cast platforms. Developing video streaming technology to provide free entertainment to people for over 2 million MAUs.-Architected the application-Built the chromecast receiver-Built the custom exoplayer for video streaming with ad lacing-Managed developers in SF and Beijing. Ran recruitment from resume review to onsite coding to pair-programming onboarding-Developed/Integrated Apis, google cloud messaging, crashlytics, analytics events, appboy, firebase, branch.io; and other 3rd party services

San Francisco, Ca, Us

Mobile developer in producing the android application for the core business of the company; as well as developing any server side and third party API and interfaces for the mobile application.--Architected mobile application--Developed geolocation and detected user activity to feed data science team with user data for behavioral intervention--Built rails and parse code for API to mobile application--Integrated numerous third party API's; Google Fit, Samsung Health, Parse (push and cloud), Fabric/Crashlytics, Mixpanel, Google analytics...--Worked closely with designers to create a beautiful and engaging UX--Built out, modularized, and open sourced numerous android UI libraries available on maven

Founded a company in January 2014 incorporated in Hong Kong and head-quartered in San Francisco. Bitheon was created in order to deliver high quality analysis and market information on crypto-currencies on mobile. My functional role was as CEO and CTO----------------------Cloud Architecture: http://www.bitheon.com/ ----------------------• Developed node.js server front and back end to poll bitcoin exchanges across the world and build financial datasets• Manage big data on cloud based mongodb service, with over 3 million documents to manipulate into time based chart graphs• Develop cloud based API for mobile clients on multiple heroku dynos. • Develop an emitter based caching architecture for minimizing database queries and API response time while guaranteeing most recent trade data from bitcoin exchange servers• Implement multiple APIs from various bitcoin exchanges----------------Client Architecture: https://play.google.com/store/apps/details?id=com.bithedge ------------• Develop mobile android client application• Implement server API on android client• Develop a home widget provider, widget update service, and data polling service• Develop a bitmap caching system to decrease application response time. Caching system uses hashes of the chart datasets as keys in order to serve multiple widgets that graph the same datasets• Develop a sqlite database storage system for persisting data from user interaction and data requests from cloud • Implement thread safe access of sqlite database across multiple widgets and services----------------------Business----------------------• Manage business and financial activities in Hong Kong and the US• Advertise company and product among US and Hong Kong bitcoin communities.• Develop relationships with digital currency exchanges and brokerages.• Give back to the open-source digital currency community.

Co-Founded a social mobile company focused on spontaneously bringing friends and strangers together for events. Think Tinder meets MeetUp.• Design and develop mobile Android client• Integrate Facebook API into client and server• Design and develop node.js server back-end• Meet and present prototype to investors• Evangelize product

San Jose, California, Us

Developed Android Applications for advanced Imaging Technologies on the company’s Android Camera Stack.• Created camera/video Android application for demonstrating advanced imaging technologies,(Digital Video Stabilization, panorama, video-snapshot, etc)• Created a testing framework in jUnit, using monkey testing for endurance testing.• Created build scripts for automatic testing and building of applications using Hudson, git, and mercurial• Measuring and improving software performance on Android• Flashing/Building AOSP on development tablets and phones from OEM's• Coded JUnit Android tests for camera operation; functional tests , UI test, and tests for custom advanced multi-touch gestures• Created custom animations for android fragment management• Created advanced multi-touch gestures along with UI view overlay such as; circle gestures, parabolic approximation gestures, zoom gestures, etc.

Los Angeles, Ca, Us

Cloud-Based Android Cell-Cytometer Application for Point-of-Care Tele-Medicine• Created a custom camera application that leverages all of the available camera configurations onthe Galaxy S2, I-9100 and AT&T phone versions• Allows for the widest set of camera configurations to be used in order to get high-resolutionmicroscopic images of fluorescent micro-beads and fluorescent white-blood cells from a phonespecific Android microscope attachment• Created native C++ code with Open Computer Vision Library through the android NDK for automatic cell counting• RESTful Server-Client implementation, like those above, for the lab clinicians to be able to share data from their tests; • Consulting services in the commercialization of UCLA licensed smartphone-based medical technology• Employed Rails 3.2, MySQL, JavaScript, jQuery, and Apache Server on Ubuntu Server 11• Created native C++ code with the Open Computer Vision Library through the Native Development Kit, NDK, for acceleration of image processing code from android camera imagesAn Android based lateral-flow test analyzer for medical-resource poorcountries• Developed all code for “Integrated Rapid-Diagnostics-Test Platform on a cell phone”• Published in Lab on Chip Journal• http://pubs.rsc.org/en/content/articlelanding/2012/lc/c2lc40235a• RESTful Ruby on Rails server implementation for geo-tagging infections from Android and iPhone clients, accessible by clinicians from anywhere in the world over a browser• Employed Rails 3.2, MySQL, JavaScript, jQuery, and Apache Server on Ubuntu Server 11• Created native C++ code with the Open Computer Vision Library through the Native Development Kit, NDK, for acceleration of image processing code from android camera images• Enabled FTDI chip driver support on Galaxy S2, powered and controlled ATmega168 microcontroller through USB host

Consulting on software architecture, image processing, and mobile medical device development and commercialization.