# Vilya Levitskiy > Software Engineer, Business owner Location: San Francisco Bay Area, United States Profile: https://flows.cv/vilya I’m a Full-Stack Software Engineer specializing in scalable real-time systems, distributed architecture, and performance optimization. I thrive on building products end-to-end — from system design to production deployment — and have a strong track record of delivering reliable, high-impact solutions. As the founder and developer of RideReady, I independently architected and launched a cross-platform mobile application using React Native and Firebase, designing a data architecture capable of supporting thousands of concurrent users. I built secure authentication, real-time synchronization, complex scheduling logic, and a modular UI system to ensure scalability and maintainability. Previously, I worked on distributed cloud infrastructure at LogDNA (Mezmo), where I improved core system performance and reliability, and at Mosaic, where I developed Scala APIs, helped transition a monolithic platform to microservices, and reduced regression testing time by over 80% through automation. My technical toolkit includes JavaScript, Python, Ruby, Java, Scala, and SQL. ## Work Experience ### Independent Software Developer @ RideReady Jan 2022 – Present | Newark, CA - Designed and developed a cross-platform mobile application using React Native - Integrated Firebase Authentication with secure user session handling - Built real-time data synchronization using Firebase Realtime Database - Structured scalable database schemas to support thousands of concurrent users - Implemented dynamic scheduling logic with recurring events and custom date overrides - Developed reusable UI components for modular interface architecture - Managed complex application state tied to real-time updates - Implemented CRUD operations with validation and error handling ### Software Engineer @ RideReady Jan 2020 – Present 1 Designed and built full mobile application independently from architecture to implementation 2 Developed cross-platform app using React Native with modular component structure 3 Implemented secure authentication using Firebase Auth 4 Built real-time synchronization with Firebase Realtime Database 5 Designed scalable data architecture supporting thousands of concurrent users 6 Implemented recurring scheduling engine with override logic 7 Created reusable UI component system for maintainable codebase 8 Managed complex application state tied to real-time updates 9 Implemented full CRUD functionality with validation and error handling ### Software Engineer @ Mezmo Jan 2019 – Jan 2020 1 Contributed to development of distributed cloud log-management platform 2 Improved performance and scalability of core system services 3 Expanded internal engineering libraries across multiple languages 4 Collaborated with engineering teams to improve platform reliability ### Software Engineer @ Mezmo Jan 2019 – Jan 2020 | Mountain View, California ### Software Engineer @ Mosaic (joinmosaic.com) Jan 2017 – Jan 2018 ### Software Quality Assurance Engineer @ Mosaic Jan 2017 – Jan 2018 1 Built REST APIs in Scala for complex financial system integrations 2 Refactored legacy monolithic architecture toward microservices model 3 Automated regression testing, reducing QA time from 15 hrs to under 3 hrs ### Software Engineer @ Personal Project Jan 2017 – Jan 2017 | San Francisco Bay Area Developed a web application for playing, storing and sharing audiobooks in a strict 10 days time frame Built a RESTful JSON Rails API for loading and storing data Made an audio player which plays continuously while users navigate through the website. Implemented an interactive and dynamic search function using JavaScript and AJAX Leveraged Redux cycle that implements single source of truth paradigm Allow users to friend other users by utilizing Rails Active Record’s models Developed an AVL Tree Visualization in Vanilla JavaScript Worked on a React Native mobile application which tracks users geolocation ### QA Engineer @ Thermo Fisher Scientific Jan 2015 – Jan 2015 | South San Francisco • Designed automated test suits in Java for the medical web-based application using TestNG framework with Selenium. • Designed, approved and executed all types of test cases for manual testing of a Linux based medical instrument for DNA amplification. • Analyzed software logical flow of the instrument • Tested cooperation of two software systems (the instrument and the server) • Assigned and regressed software defects ### Software Quality Assurance Engineer @ Thermo Fisher Scientific Jan 2015 – Jan 2015 1 Tested Linux-based medical device systems for reliability and compliance 2 Helped deliver production-ready regulatory-compliant diagnostic device ### QA Engineer @ Teachscape Jan 2013 – Jan 2014 • Developed an automation framework in Scala with Scalatest tool, maintained scripts written in Java with Selenium TestNG for a web-based application used for maintaining and monitoring teachers’ professionalism. • Designed and executed test cases performing usability, functionality and UI quality testing • Assigned tasks to outsourced QA team in India and verified correct and timely execution; reported results to management • Analyzed and improved software requirements specification • Performed database testing using SQL • Used Git version control system, JIRA bug tracking and TestRails test case management software ### Software Quality Assurance Engineer @ Teachscape Jan 2013 – Jan 2014 1 Built automated test frameworks in Java for web platforms 2 Improved testing coverage and release stability ### QA Engineer @ Swivl Jan 2012 – Jan 2013 | San Carlos, CA • Demonstrated flexibility and accurate task execution under minimal supervision in a small start-up environment • Tested Swivl iOS mobile application for iPhone/iPad including GUI, video recording, interaction with Swivl hardware and firmware updating process • Performed testing of Swivl iPhone (iOS) accessory including firmware operation (buttons, indicators, microphone, correct program execution and mode switching) as well as mechanical performance (range, speed, responsiveness) • Performed stress and wear testing of Swivl system under different power conditions and in the presence of interfering infrared and radio signals ### Software QA Engineer @ Aeria Games & Entertainment Jan 2012 – Jan 2012 • Developed and executed test plans for Regression, Functionality and GUI testing on daily basis • Tested over 50 Aeria Games websites and web based client/server applications including Marketing Tracking System, Content Management System and Billing System • Verified Release Candidates and participated in deployment process (Jenkins tool) working closely with release manager • Reported and tracked bugs until complete resolution using JIRA • Verified test reports created by an offshore QA team • Performed Browser Compatibility testing (IE, Mozilla, Chrome, Safari) on Windows, Mac OS and mobile platforms (Apple iOS, Android) • Accelerated resolution of software issues by generating easily reproducible bug reports and providing constructive feedback to developers • Inspected client-server traffic using Fiddler tool • Tested integration with Facebook and Twitter • Verified correct Online Translation / Localization using Pootle tool. • Analyzed and improved documentation ## Education ### Juris Doctor (J.D.) in International Law and Legal Studies South Ural State University (SUSU) Jan 2006 – Jan 2011 ### Computer Software Engineering App Academy Jan 2017 ### Full Stack Web Development App Academy ### Data Structures & Algorithms College of San Mateo ### UC Berkeley Extension ### Advanced Java APIs UC Berkeley Extension ### Law Degree in International Law and Legal Studies South Ural State University (SUSU) ## Contact & Social - LinkedIn: https://linkedin.com/in/vilyalevitskiy --- Source: https://flows.cv/vilya JSON Resume: https://flows.cv/vilya/resume.json Last updated: 2026-03-29