Head of Development Blockchain Security Tool Team
2018 - PRESENTErnst & Young (EY)- Applied for three patents related to blockchain efficiency and security.
- Developed a full-features backend for testing the functionality of smart contracts.
- Researched the patterns for insecure blockchain implementations.
- Developed smart contracts, and gave a review on Solidity smart contracts.
Technologies: Smart Contracts, React, Truffle, Node.js, Solidity, Ethereum, BlockchainHead Of Development
2018 - PRESENTLeadCoin- Hired a professional team in a short time.
- Developed full stack app.
- Integrated a CI and CD.
- Wrote smart contracts.
Technologies: Smart Contracts, React, Node.js, Bitcoin, Ethereum, SolidityCTO & Fullstack
2017 - PRESENTBackupBox Inc.- Developed a secure REST API using NodeJS and deployed it to Google Cloud Platform.
- Managed a team of UI/UX and front-end developers who developed a desktop app and a single page web app using React and Angular.
- Used BigData technologies to handle billions of files.
- Deployed load-balancers and auto-scaling components.
- Implemented continuous integration and auto deployment after successful tests.
- Created a health-check monitoring system for logging, alerting, and fixing issues in real-time.
- Built custom made NodeJS modules and published to NPM.
- Wireframed and implemented custom-made designs using SCSS, Vanilla Javascript, RTLer, and Webpack.
Technologies: SCSS, Amazon Web Services (AWS), Google Cloud, Docker, JavaScript, Node.js, Big Data, Full-stackConsultant, Public Speaker, and Mentor
2016 - PRESENTFreelance- Lectured at the All-Things-DATA Conference (the biggest data event in Israel) about using web-scraper to improve marketing campaigns.
- Spoke at the GeekTime Cyber Conference about the most critical security risks in Web-App.
- Mentored several startup accelerators.
- Served as a consultant to several startups about moving from idea to the first 100 users.
- Validated startup ideas by quickly prototyping MVP's (minimum-value-product).
Technologies: Machine Learning, Big Data, Cybersecurity, CSS3, Agile, Full-stackCEO & Full-stack Developer
2009 - PRESENTOpen Screenshot- Developed the first Chrome extension that gave users the option to share and edit their screen using HTML5, JavaScript, and jQuery.
- Created a custom-made image editor that supports drag & drop, adding texts, and undo/redo using advanced CSS3 and HTML5.
- Built a plugin system that any corporation can extend to it's own needs.
- Implemented an oAuth mechanism so users can login securely using their preferred social network profile.
- Developed a back-end to store and serve the images.
- Designed the extension and did the UI/UX.
- Marketed the extension using Gorilla Marketing techniques.
- Released the code as open-source and maintained it.
Technologies: Cloudflare, MySQL, PHP, ASP, JavaScript, Chrome Extensions, Full-stackCTO & Fullstack
2014 - 2016GiftWizard Inc.- Managed a team of full-stack developers.
- Set priority for tasks and gave an estimation of cost and time using Microsoft Project, Trello, and Asana.
- Designed a micro-services architecture, using custom-made Docker Images, VPN, and internal network communication. Preserved the design decisions using Draw.io and LucidChart diagrams.
- Developed machine-learning algorithms using Neo4j, BigQuery, and Elastic Search for a recommendation engine.
- Created a zero-downtime system that serves millions of end-users.
- Built an auto-recovery system that discovers failed components and automatically backs up and restores them.
- Programmed REST API using NodeJS, and implemented caching and load-balancing using NGINX and HAProxy.
- Developed proxy servers for implementing security and API throttling to external services using NodeJS.
Technologies: Machine Learning, DNS, MongoDB, MySQL, Redis, React, Angular, Google Cloud, Docker, JavaScript, Node.js, Full-stackCTO & Full Stack
2013 - 2014Remarketing Ltd- Developed single page web-app using templates, AngularJS, custom-made services and plugins.
- Built a secure REST API that connected to billions of records in real time. Was responsible for performance, stability and security.
- Created a remarketing tag pixel. The pixel collected a large amount of data and used it in real-time.
- Deployed and built continuous integration scripts.
Technologies: Amazon Web Services (AWS), Angular, AWS, Docker, MySQL, JavaScript, Node.js, Full-stackFull-stack Developer
2008 - 2010Pashbar Inc.- Built an eCommerce platform for choosing a seat and buying event tickets.
- Built the back-end and implemented real-time messaging, before socket.io and WebRTC API's even existed.
- Developed the rating and recommendation engine.
- Created secure admin dashboards.
Technologies: Servers, MySQL, jQuery, Vanilla JS, Full-stackDesktop App Developer
2005 - 2009Shaalvim Institute- Developed a system to manage all the students in Shaalvim.
- Create Visual Basic Forms, macros, toolbars, and menus for this app.
- Connected Microsoft Access to Microsoft Word & Excel, for printing & mail merging letters.
- Secured the VBA by using digital signature code signing,.
Technologies: Apps, Desktop, BASICScript Automations freelancer
2000 - 2005ILDC Holdings Inc.- Created new functions for Microsoft Excel, by using VBA macros. The functions help to find fraud by combining data from multiple records.
- Developed a Reports Generation system. The system took data from many sources (XML, JSON, REST, and similar) and use it for generating new Excel Reports.
Technologies: Visual Basic for Applications (VBA)