Oleksandr Shulha Email & Phone Number

Abbott Park, Illinois, Us

San Francisco, California, Us

Berlin, Deutschland, De

- Started from scratch to build a robust setup, attracting 500K users, with 150K+ monthly users, generating over $5M monthly for Berlin Brands Group.- Created not just a sleek and user-friendly mobile app for iOS and Android, but also constructed a complete system with a robust CMS and a resilient back-end, adept at tackling high-load challenges.- Designed and built the entire app architecture, implementing numerous React Native bridges and listeners from native code (Kotlin, Swift) of the SDK for Smart devices control.- Implemented and optimized Continuous Integration/Continuous Deployment (CI/CD) processes, putting significant effort into deploying everything to CircleCI for streamlined development workflows.- Extensive experience in successfully deploying applications to Google Play and Apple Store, navigating and overcoming the challenges associated with these platforms.- Differentiated our app by seamlessly integrating with voice platforms like Alexa and Google, allowing users to control their devices through voice commands.- Assembled and led a team of 12 engineers, contributing to significant accomplishments. Handled over half of the management tasks, showcasing dedication to the project's success.Klarstein: https://ownrock.com/cases/klarsteinKlarstein App Store: https://apps.apple.com/us/app/klarstein/id1479571307Klarstein Google Play: https://play.google.com/store/apps/details?id=com.chaltec.klarsteinrnBlumfeldt: https://ownrock.com/cases/blumfeldtBlumfeldt App Store: https://apps.apple.com/sk/app/blumfeldt/id1500812746Blumfeldt Google Play: https://play.google.com/store/apps/details?id=com.chaltec.blumfeldtrn

Toronto, On, Ca

- Achieved over a 5x improvement in the Time to Interactive (TTI) for the Intelex mobile app.- Led a team of 8 people that advanced the development of the Intelex mobile app.- Developed a substantial feature for the Intelex mobile app: the offline mode with seamless data synchronization. - Developed a variety of features focused on push notifications for critical situations in factories, and assisting users in proactively avoiding potentially dangerous cases.- Created the architecture using Appium for end-to-end tests, ensuring the app's robust functionality.- Configured and maintained CI/CD deployment through Jenkins on real devices and with real smartphones for end-to-end tests.Intelex - App Store: https://apps.apple.com/us/app/intelex-mobile/id1097232446Intelex - Google Play: https://play.google.com/store/search?q=intelexMore about Intelex: https://www.intelex.com/

SpotOption was a company that provided a binary options trading platform. They offered a white-label solution to brokers, enabling them to customize and operate their own binary options trading platforms.My key accomplishments include:- I refactored the codebase, replacing all jQuery and vanilla JavaScript with ReactJS in the development process.- Improved application's performance 10+ times through analyzing/optimizing ORM queries, denormalizing data, and adding caching mechanisms resulting in faster data availability for the end user.- Optimised application memory consumptions by introducing streaming API for export which significantly extended limits for resulting files and reduced infrastructure cost.- Suggested and refactored the Front-End to lazily load large pages, like the dashboard, reducing The First Contentful Paint (FCP) and Time to Interactive (TTI) by over 20 times. This approach also significantly alleviated server load.- I actively contributed to the migration of the Back-End from Zend Framework to Symfony.- Established and consistently maintained a robust level of coverage for unit tests.SpotOption was closed, but you can find more information about them here: https://en.wikipedia.org/wiki/SpotOption

London, England, Gb

- Designed and implemented a new client-server application from scratch in a startup environment in a small team of 3 people, resulting in its successful launch and sale as a fully documented production-ready system.- Identified and fixed a memory leak, resulting in improved user experience by preventing the occurrence of intermittent Out of Memory errors.- Developing and maintaining features for the client-server application, featuring a central server that manages multiple local servers using Remote Procedure Calls (RPC) protocol.- Built 4 CRM websites from scratch for various clients, overseeing everything from design to functionality. Employing the latest tools and technologies, I ensured each website was user-friendly and aligned with the unique needs of each client.

Purchase, New York, Us

- Built two promotional campaign websites for PepsiCo, showcasing creativity and technical proficiency.- Implemented interactive mini-games using JavaScript(Canvas), enhancing user engagement and contributing to the overall success of the promotional campaigns.- Successfully met tight deadlines, delivering both websites on time.- Worked with different teams at PepsiCo, addressing specific campaign needs.

- Built several websites for clients. This included talking to them to understand what they needed, making the websites look good and work well, and helping clients after the websites were live by fixing issues and making updates.- Actively sought different work experiences to learn as much as possible. I took on different roles, tried new things, and learned new skills. This helped me be adaptable in different professional situations.

Master'S Degree, Internet Programming

Bachelor'S Degree, Internet Programming