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MM@mikemarciniak
Senior React Native engineer passionate about building magical mobile experiences.
United KingdomI am a Senior React Native engineer with a strong focus on creating magical mobile experiences and scaling systems. My journey in mobile development has been marked by a commitment to building reliable applications, utilizing native components, and ensuring data security. I have extensive experience in translating Objective-C to Swift and vice versa, and I am proficient in both Expo and pure React Native setups using TypeScript.
Throughout my career, I have contributed to various projects, including decentralized crypto exchanges and centralized wallets, where I played a pivotal role in mentoring junior developers and enhancing user experiences. My responsibilities have ranged from building KYC flows to implementing feature flags and A/B testing, all aimed at improving user retention and satisfaction. I thrive in collaborative environments, working closely with product and design teams to bring innovative ideas to life.
In addition to my technical skills, I have a passion for projects that benefit others and a keen interest in clear strategic planning. I enjoy the challenge of working in diverse industries, including music, automotive, and finance, and I am always eager to learn and grow in my field.
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Work history, roles, and key accomplishments
LBLoud Beings
Oct 2024 - Mar 2025 (5 months)
Developed a JavaScript-based game exploring John Lennon's Dakota apartment through text commands. Integrated a custom API for dynamic game setup and a Spotify integration responsive to game progress.
TOToken.com
Oct 2017 - Aug 2024 (6 years 10 months)
Built two major applications, Monolith (a decentralized crypto exchange) and token.com (a centralized wallet with video feed capabilities). Led hiring, mentoring, and architectural responsibilities including KYC flow, login systems, and video feed optimization.
Connected Space
Feb 2016 - Jul 2017 (1 year 5 months)
Developed an application connecting to an ODB (on-board diagnostics) device in cars to stream relevant data. Implemented geo-fencing for push notifications and designed custom graphs with animations.
Betway
May 2013 - Jan 2016 (2 years 8 months)
Primarily developed casino games using ActionScript and JavaScript for publication on App Store and Play Store. Contributed to the development of betway.com, gaining experience with Angular and basic C#.
We Love Mobile
Feb 2011 - Apr 2013 (2 years 2 months)
Developed several mobile websites to promote various clients, including Coca-Cola, Nintendo, Peugeot, and Nestea. Gained foundational experience in mobile device compatibility and web development.
Degrees, certifications, and relevant coursework
UGB.Sc., Web Technologies
Completed a Bachelor of Science in Web Technologies, focusing on the principles and practices of web development. Gained foundational knowledge in various web technologies and programming concepts.
Certificate, Web Design
Studied web design principles and techniques, gaining practical skills in creating and developing web interfaces. Focused on foundational aspects of visual design and user experience for the web.
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