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Hi, I'm Yaroslav Khazivaliiev, an experienced and driven Frontend Developer with 4 years of hands-on experience building projects from scratch and maintaining existing ones. I have successfully worked on projects for renowned clients such as Nissan and collaborated within international English-speaking teams. I take pride in actively contributing to app design and development, as well as being involved in planning and preparation phases. I am passionate about using modern technologies such as React, Next.js, and Node.js to create high-quality, performant applications. Continuously learning and adapting, I enjoy taking on new challenges, from frontend to backend development, and delivering solutions that meet business needs and exceed expectations.…Hi, I'm Yaroslav Khazivaliiev, an experienced and driven Frontend Developer with 4 years of hands-on experience building projects from scratch and maintaining existing ones. I have successfully worked on projects for renowned clients such as Nissan and collaborated within international English-speaking teams. I take pride in actively contributing to app design and development, as well as being involved in planning and preparation phases. I am passionate about using modern technologies such as React, Next.js, and Node.js to create high-quality, performant applications. Continuously learning and adapting, I enjoy taking on new challenges, from frontend to backend development, and delivering solutions that meet business needs and exceed expectations.

Yaroslav Khazivaliiev

Front-End Developer, Full Stack Developer, Web Developer, +2

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Hi, I'm Yaroslav Khazivaliiev, an experienced and driven Frontend Developer with 4 years of hands-on experience building projects from scratch and maintaining existing ones. I have successfully worked on projects for renowned clients such as Nissan and collaborated within international English-speaking teams. I take pride in actively contributing to app design and development, as well as being involved in planning and preparation phases. I am passionate about using modern technologies such as React, Next.js, and Node.js to create high-quality, performant applications. Continuously learning and adapting, I enjoy taking on new challenges, from frontend to backend development, and delivering solutions that meet business needs and exceed expectations.…Hi, I'm Yaroslav Khazivaliiev, an experienced and driven Frontend Developer with 4 years of hands-on experience building projects from scratch and maintaining existing ones. I have successfully worked on projects for renowned clients such as Nissan and collaborated within international English-speaking teams. I take pride in actively contributing to app design and development, as well as being involved in planning and preparation phases. I am passionate about using modern technologies such as React, Next.js, and Node.js to create high-quality, performant applications. Continuously learning and adapting, I enjoy taking on new challenges, from frontend to backend development, and delivering solutions that meet business needs and exceed expectations.

Available to hire

Hi, I’m Yaroslav Khazivaliiev, an experienced and driven Frontend Developer with 4 years of hands-on experience building projects from scratch and maintaining existing ones. I have successfully worked on projects for renowned clients such as Nissan and collaborated within international English-speaking teams. I take pride in actively contributing to app design and development, as well as being involved in planning and preparation phases.

I am passionate about using modern technologies such as React, Next.js, and Node.js to create high-quality, performant applications. Continuously learning and adapting, I enjoy taking on new challenges, from frontend to backend development, and delivering solutions that meet business needs and exceed expectations.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Spanish; Castilian

Intermediate

Ukrainian

Fluent

Russian

Fluent

Work Experience

Software Development Engineer - React.js at Fielda

January 31, 2023 - August 19, 2025

Worked from August 2021 to January 2023 maintaining and improving a software product including bug resolution that reduced the error rate by 30%. Fixed critical user workflow bugs and refactored legacy class components to functional components to improve code maintainability. Successfully migrated the application to a newer major version of Ant Design library, improving design consistency and functionality.

Software Development Engineer - Next.js at Nissan AOP (Internal/Confidential Project)

April 30, 2024 - August 19, 2025

Co-developed a Next.js application from scratch as one of two lead frontend developers, contributing also to backend development. Achieved 100% test coverage for both backend and frontend. Conducted research and analysis during planning to select the best tools and libraries. Completed over 105% of originally planned Stage 1 tasks within the timeframe, demonstrating strong efficiency.

Software Development Engineer - React.js at Nemours (Internal/Confidential Project)

November 30, 2023 - August 19, 2025

Implemented error handling for all asynchronous requests, resolving critical application failures. Configured react-hook-form usage and rectified significant errors, saving development time and preventing future issues.

Full-Stack Developer (Frontend/Backend - 70/30) - Next.js at AI-assistant for athletes (contract reviewer) - Confidential Project

September 30, 2024 - August 19, 2025

Delivered project on time with several tasks from the next development phase completed ahead of schedule. Adapted the system for seamless AI integration and reengineered a third-party library to enhance PDF document functionality. Collaborated closely with backend developer on backend architecture and features.

Full-Stack Developer - Astro.js at Visible Magic Website

October 31, 2024 - August 19, 2025

Developed Visible Magic's website using Astro.js, a new technology for the team. Leveraged Astro.js features to deliver a fast, user-friendly, fully adaptive website with minimal JavaScript usage. Implemented effective SEO strategy and developed blogging system with collections to enhance content organization and visibility.

Frontend Developer - Pixi.js + React.js at Collection Card Game - Confidential Project (on hold/not finished yet)

December 31, 2024 - August 19, 2025

Developed a demo application using Pixi.js and BoardGame.io within a short timeframe. Demo featured multiplayer matches between two players using WebSockets and was launched via a Telegram bot using ngrok. Built game menu/client with React and the game itself with latest Pixi.js, ensuring full responsiveness across mobile devices.

Software Development Engineer at Kanini Software Solutions Inc - Nashville, TN

April 30, 2024 - August 19, 2025

Worked at Kanini, a technology agnostic digital transformation enabler specializing in Data Analytics & AI, Product Engineering, and more, from August 2021 to April 2024. Roles included software development and collaboration on digital transformation projects.

Full-Stack Developer - React.js at NDA - Confidential project

November 1, 2024 - Present

Developing a dApp based on the Sui blockchain to allow users to perform various actions with their own and other users' tokens. The project is ongoing.

Full-Stack Developer - Next.js at Era-Trade

May 1, 2024 - Present

Independently developed the application from scratch to deployment and release. Implemented secure trading functionality connecting various exchanges (Binance, ByBit) with plans for future integrations. Ensured full responsiveness and optimized performance using Next.js features.

Employee at Visible Magic Inc - Sheridan, WY

June 30, 2025 - August 19, 2025

Employed at Visible Magic, a Web3 product development company, from July 2024 to June 2025, specializing in blockchain infrastructure and software product design, construction, management, and maintenance for clients and partners.