Mykyta Lalietin
Senior Frontend Developer | React, TypeScript, JavaScript | 9+ years experience in building scalable web apps.
About Me
I'm a Frontend Developer with 9+ years of experience specializing in React, TypeScript, and modern JavaScript. My focus is on building scalable, high-performance applications with clean architecture and pixel-perfect UI.
- Experienced in React Hooks, Redux, React Query, and state management patterns
- Skilled in CI/CD setup, automated testing, and reusable component libraries
- Strong background in SaaS, insurance platforms, and OTT/streaming services
- Passionate about improving development efficiency and user experience
Always open to learning and sharing knowledge, while delivering solutions that bring real value to users and businesses.
Work Experience
Frontend DeveloperMobilunity
Project: “GBU Life”
Feb 2024 – Present · 1 yr 9 mos
ReactReduxTypeScriptJavaScriptreact-testing-libraryGitHTML5react-bootstrapSCSSTanStack React QueryMaterial-UI
- •Designed and developed a robust, responsive web interface for the administrative panel of a US-based insurance company
- •Leveraged React-Bootstrap to create a visually appealing and fully responsive UI
- •Built reusable, modular components to maintain design consistency and accelerate development across multiple features
- •Proactively identified and resolved customer issues, providing efficient solutions to enhance platform reliability
Frontend DeveloperMobilunity
Project: “Successeve”
Jul 2019 – Feb 2024 · 4 yrs 8 mos
ReactReduxTypeScriptJavaScriptreact-testing-libraryImmutable.jsGitLab CI/CDGitFluxHTML5WebpackSCSSDocker
- •Developed a SaaS platform for managing and enhancing customer success (CRM), delivering scalable and efficient solutions
- •Replaced FLUX with a Redux store, refactoring the legacy codebase for improved maintainability and performance
- •Implemented functional React components using Hooks, promoting modularity and code reusability
- •Conducted unit and integration testing with react-testing-library to ensure code quality and reliability
- •Configured and optimized Webpack, integrating plugins for faster builds and enhanced development efficiency
- •Initiated and implemented GitLab CI/CD pipelines for automated builds and deployments
Frontend DeveloperMEGOGO
Project: “Web Department”
Jan 2019 – Jul 2019 · 7 mos
ReactReduxTypeScriptJavaScriptAdaptive StreamingGitHTML5WebpackSCSS
- •Designed and developed a SPA for creating mobile, web, and SmartTV landing pages
- •Built responsive, cross-browser UIs with reusable components
- •Architected and organized client-side business logic for video players, EPG, and advertisements, optimizing performance and reliability
Frontend DeveloperMEGOGO
Project: “SmartTV Department”
Apr 2016 – Jan 2019 · 2 yrs 10 mos
JavaScriptHTML5CSSSCSSGulpGitAdaptive Streaming
- •Supported and enhanced Smart TV OTT/VOD services for 26+ vendors (LG, Samsung, etc.), ensuring stable performance and seamless content delivery
- •Developed Smart TV video players, UI markup, advertisements, and landing pages on the client side, optimizing user experience across devices
- •Performed bug fixing, debugging, and refactoring
Frontend DeveloperDeceti Innovations Inc
Project: “E-commerce Store”
Oct 2015 - Apr 2016 · 7 mos
JavaScriptjQueryHTML5CSS
- •Designed and developed front-end for online e-commerce store (sign industry in North America)
- •Developed cross-browser and cross-platform UI for the online editor
- •Designed components to handle vector image inside the editor
Courses & Certifications
React - The Complete Guide 2025 (incl. Next.js, Redux) | Udemy | 2025
Advanced and Object Oriented JavaScript and ES6 | Udemy | 2024
Design Patterns & Antipatterns & Solid in JavaScript 2024 | Udemy | 2024
Next.js: Advanced Level | Lectrum | 2023
JS + React | fwdays'22 | 2022
MERN Stack Front To Back: Full Stack React, Redux & Node.js | Udemy | 2020
MEGOGO Media Hackathon | MEGOGO | 2018
Technical Skills
JavaScriptReactTypeScriptTanStack React QueryReduxImmutable.jsreact-bootstrapMaterial-UIHTML5CSSSCSSGitWebpackAdaptive Streaming
Education
Master's degree
2008 - 2014
National Technical University of Ukraine 'Kyiv Polytechnic Institute'
Telecommunication systems and networks
Languages
Ukrainian - Native
English - Upper Intermediate