# Isaac R. > Staff Engineer @ worldcoin Location: San Francisco, California, United States Profile: https://flows.cv/isaacr I learned how to code at eight and joined a large company as a full-time engineer at 19. Engineer with extensive experience living in San Francisco, building something new! ## Work Experience ### Staff Software Engineer @ Tools for Humanity Jan 2025 – Present | San Francisco Bay Area ### Co-Founder @ Dawn Jan 2023 – Jan 2025 | San Francisco Bay Area Dawn enables a seamless experience when using dapps with its powerful Safari Extension. No need for inbuilt browsers. Website: https://www.dawnwallet.xyz Open Sourced our key management: https://github.com/dawnwallet/dawn-key-management ### Owner @ Studio Labs, LLC Jan 2021 – Jan 2023 | San Francisco Bay Area I relocated to San Francisco with my company, self-petitioning for my visa. At Studio Labs, I worked on self-custodial wallets like Light and Balance. ### Software Engineer @ Rakuten Jan 2020 – Jan 2021 | Barcelona, Catalonia, Spain After joining full-time in 2015 at 19, I returned to Rakuten to relocate within the organization to San Francisco. Due to a problem with content encryption, we had to recode the player using Shaka Player (Google). I also refactored the entire app to start using Swift, transitioning away from Objective-C. ### Software Engineer @ Durcal Jan 2019 – Jan 2020 | Barcelona, Catalonia, Spain I helped Durcal implement new features that handled over 300K DAU. ### Creator @ Personal Projects Jan 2017 – Jan 2019 | San Francisco Bay Area During this time, I was traveling back and forth to San Francisco to launch multiple personal projects, aiming to find product-market fit with them. Squapp: Squapp makes it easy to share what you're up to, explore new activities, and see what your friends are doing. Grape: A real-time location-based game that lets you see who's with you at a venue and discover who visits it the most Roda: We aimed to solve First-Mile/Last-Mile transportation challenges with short-range electric vehicles. After launching and not finding PMF, I decided to return to Barcelona. ### Software Engineer @ Verse Jan 2016 – Jan 2017 | Barcelona, Catalonia, Spain First iOS engineer, and fourth employee. I developed the initial version that was launched to the market, attracting the first users. Square later acquired it. ### Software Engineer @ Rakuten Jan 2015 – Jan 2016 | Barcelona, Catalonia, Spain Joined Rakuten as the youngest full-time engineer at 19. Developed a DRM-protected mobile player using PlayReady (Microsoft) and Widevine (Google) instead of the native version (Fairplay). Coded an innovative payment solution and the offline downloads feature, beating Netflix to market (https://techcrunch.com/2015/09/10/wuaki-moves-ahead-of-netflix-with-offline-downloads-starting-first-with-mobile-devices/) ### Creator @ Personal Projects Jan 2010 – Jan 2015 | Barcelona, Catalonia, Spain Launching projects since I'm 13. Primarily focused on iOS and Android applications, with full-stack experience. Highlights: Series.ly: A social network to order, organize, and track your movies. Ranked #1 in 26 countries, generating over $100k in revenue. Impossible Game: A Flash game I launched as a Facebook application, attracting 20 million users. etc... ## Contact & Social - LinkedIn: https://linkedin.com/in/koideapps --- Source: https://flows.cv/isaacr JSON Resume: https://flows.cv/isaacr/resume.json Last updated: 2026-04-01