Oleksandr

Oleksandr Myronchuk
Middle Frontend Developer
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SUMMARY
Frontend Developer with over 3 years of commercial experience in building modern, high-performance
web applications.
Specialized in the React.js ecosystem, scalable architectures, and internal CRM/ERP systems, with a
strong focus on performance optimization and clean, maintainable code.

Proficient in developing responsive and dynamic applications using React.js, Next.js, and TypeScript,
applying advanced state management and component-driven development principles.
Experienced in developing Telegram Mini Apps and Chrome Extensions for automation, entertainment,
and productivity tools.

Proven track record of mentoring junior developers, improving project architecture, and resolving
complex performance bottlenecks.
Driven by a passion for delivering high-quality, performance-optimized applications that solve real
business challenges and provide outstanding user experiences.

AREAS OF EXPERTISE
• Building scalable web applications with a focus on performance, maintainability, and responsiveness.
• Creating reusable UI components and interactive interfaces optimized for real-world use.
• Implementing new product features that align with business requirements and solve real user problems.
• Designing and implementing CRM and ERP systems with modern frontend architecture.
• Developing Telegram Mini Apps integrated with backend services and external APIs.
• Developing Chrome Extensions for entertainment, automation, and productivity.
• Collaborating effectively with backend, QA, and design teams to deliver cohesive product solutions.
• Mentoring junior developers, performing code reviews, and maintaining clean coding standards.
• Migrating legacy codebases to modern frameworks while maintaining functionality and improving
performance.

TECHNICAL SKILLS & PRACTICES
Frontend: React.js, Next.js, Redux Toolkit, TypeScript, JavaScript (ES6+), React Query, Tailwind CSS, Styled
Components, SCSS, Rsuite, REST API, Strapi, Webpack
Tools & Workflow: Git, GitHub, Bitbucket, npm, yarn, i18next, Swiper.js, Formik, React Hook Form, ESLint,
Prettier, Figma, Jira, Trello, Notion
Additional: Telegram Mini Apps Development, Chrome Extensions Development, SEO Optimization,
Microservices Architecture, API Integrations
Methodologies: Agile, Scrum, Component-Driven Development, Code Review Culture
JOB EXPERIENCE
Frontend Developer | Star Way
Feb 2023 – Present
Developed and maintained complex applications using React.js, Next.js, and TypeScript.
Focused on scalable architecture, performance-first development, and clean, maintainable code.
Collaborated with backend and design teams to deliver stable, responsive, and user-friendly interfaces.

Key Contributions:
• Improved application performance by ~40% through refactoring, bundle optimization, and eliminating
rendering bottlenecks.
• Mentored junior developers, conducted technical reviews, and successfully raised overall code quality.
• Designed and implemented scalable UI/UX systems for internal dashboards and CRM/ERP solutions.
• Initiated and led the adoption of modern frontend technologies — React.js, Next.js, TypeScript, Redux
Toolkit, React Hook Form, Tailwind CSS — significantly improving maintainability, scalability, and team
productivity.
• Developed Telegram Mini Apps integrated with CRM/ERP systems and backend services, ensuring high
performance, scalability, and smooth user interaction.
• Developed a completely new company website using Next.js with a modern React/TypeScript stack,
resulting in major improvements to performance, SEO, user experience, and long-term maintainability.

Frontend Developer | WhiteDev

Nov 2023 – Feb 2025
Developed and maintained web applications using Next.js and TypeScript.
Built and supported Chrome Extensions for entertainment, gaming, and productivity.
Enhanced UI/UX, cross-browser compatibility, and extension stability.

Key Contributions:
• Created reusable UI components and improved rendering and load performance.
• Integrated external APIs, analytics, and third-party services.
• Ensured modular, scalable architecture using TypeScript and modern patterns.
• Developed backend functionality using Strapi (custom APIs, content models, permissions) and integrated
it with React/Next.js frontend applications.

EDUCATION
Bachelor’s Degree, Information Technology — Sumy State University (2020–2022)
Junior Specialist, Information Technology — Zhytomyr Agrotechnical College (2016–2020)

LANGUAGES
Ukrainian — Native (C2)
English — A2-B1 (actively improving)