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Serhii Brykov
Frontend Developer

WORK EXPERIENCE
Front-end developer May 2024 - for now
The WhyKingz
Played a key role in improving and updating existing
functionality, including optimization of the mobile application
ABOUT ME and web project, as well as updating core libraries.
Developed the cash system functionality for the project (deposit
and withdrawal operations), implemented synchronization with
I have an extensive background in front-end the backend, and integrated with the cash API.
development (4+ years), focusing on key Contributed to updating the cryptocurrency module libraries
technologies such as JavaScript and popular (migration from web3 to reown).
frameworks including React.js, Vue.js, and Developed an admin panel for monitoring all activities within the
Next.js. Additionally, my expertise extends to project.
state management libraries such as Redux Handled front-end–related tasks using Node.js.
Toolkit, Redux, and Zustand. I also possess
Front-end developer January 2022 - May 2024
significant experience in React Native
development for mobile platforms. IT Lab-Studio

In my career, I've gained practical backend Developing and maintaining user interfaces for web applications
in the cryptocurrency industry.
development skills, working with Symfony Creating web pages with structured content, styling, and
Framework, MySQL, PHP, Prisma ORM, interactive elements.
NestJS, and Node.js. Collaborating with back-end developers to ensure seamless
My achievements include successful integration between the front-end and server-side
functionalities.
collaboration with diverse development
Resolving bugs, implementing new features, and providing
teams, optimization of projects for maximum ongoing maintenance for existing codebase.
productivity and quality, as well as the
creation of innovative web and mobile Front-end developer February 2021 - January 2022
applications that meet the demands of the Freelance
modern market.
Design, development, stabilisation and release of mission-critical
I am always open to learning new application, significantly improving customer operations.
technologies and enhancing my skills, ready Software improvements by reducing technical dept up through
to join a team committed to achieving high- the implementation of architectures, design patterns, SOLID
performance results in software principles and software development best practices.
development. Software design assessment in order to achieve the best cost-
benefit ratio for projects.

CONTACT ME More details about the projects on the next page.

SKILLS SUMMARY
[open contact info](look above in the "contact info" section)
JavaScript Api Platform
[open contact info](look above in the "contact info" section) TypeScript MySQL
React.js Node.js
LinkedIn Next.js Express
Redux Toolkit Nest
Redux MongoDB
EDUCATION Redux Saga SASS
Zustand HTML5
Front-End Development, React Native Figma
PHP GIT
Beetroot Academy, Symfony Cascading Style Sheets (CSS)
2021-2022
GITHUB REPOSITORIES
Personnel Management and Labor Go to repo
Economics,
LANGUAGES
Zhytomyr Polytechnic State
University, Bachelor Ukrainian - native
English - B1+, Intermediate
2017-2019 Russian - fluent

PROJECTS

NDA - Gambling Enhancement of the user interface and optimization of the project by
project updating it in line with modern requirements. Integration of cash APIs
and development of a custom cash functionality.
Technologies: React, React Native, Redux-Saga, Node.js, and others.

NDA - Admin panel Development of a user interface for tracking user activities across
projects. Interaction with the backend for data exchange and business
logic implementation.
Technologies: React, Redux-Saga, Node.js, and others.

NDA - Messenger Participation in concept development; interface creation; utilization of
(similar to Telegram) libraries for various purposes (creating dynamic interaction between
users, multi-level application structure, localization (I18Next), etc.);
configuring user authentication system; testing and optimizing
application performance.
Technologies: React Native, JavaScript, WebSocket, third-party
libraries for graphics, and more.

NDA - Support Chat Front-end development, interface design, creation of iFrame for
integration on various websites, chat logic implementation, speed
optimization and user experience enhancement, working with sockets.
Technologies: React, JavaScript, WebSocket, third-party libraries for
graphics, and more.

NDA - Cryptocurrency Front-end development, interface creation, interaction with the
Exchange Platform server-side, graphics and adaptive design, integration of various APIs.
Technologies: React, JavaScript, PHP, Symfony, WebSocket, Redux
Toolkit, third-party libraries for graphics, and more.

NDA - Cryptocurrency Trading interface development, interaction with the server-side,
Exchange Platform integration of various APIs, implementation of two-factor
authentication system, encryption, UX/UI improvements, adaptive
design, testing and optimization of website performance.
Technologies: React, JavaScript, PHP, Symfony, WebSocket, Redux
Toolkit, GraphQL, as well as various third-party libraries for graphics
and other tasks.

NDA - Cryptocurrency Page layout, ensuring website adaptivity, integration with backend
Exchange Platform code.
Technologies: HTML, CSS, React, JavaScript, as well as various third-
party libraries for graphics and other tasks.

NDA - Cryptocurrency Development of management panels, transaction lists, integration with
Exchange Platform backend code, implementation of authentication system, testing and
optimization of website performance.
Technologies: React, JavaScript, WebSocket, Redux Toolkit, as well as
various third-party libraries for graphics and other aspects.

NDA - Book Selling Integration of an external template on the WordPress platform, layout
Website and design, content population, SEO optimization.
Technologies: WordPress.

PROJECTS

NDA - Online Store Creation of web interface components, working with forms, validation,
and interaction with APIs for data storage and retrieval, state
management using Redux Toolkit, adaptive design, implementation of
authentication system, testing and optimization of website
performance.
Technologies: React, Next.js, Redux Toolkit, various third-party
libraries for graphics, and more.

NDA - Online Store Graphics and adaptive design, project support.
Technologies: Vue.js, as well as various third-party libraries for
graphics and other aspects.

NDA - AI-methodologist Development of an AI-powered platform and PWA for generating
educational and methodological materials using RAG and a proprietary
knowledge base.
Built an AI chat system with conversational memory and integration of
OpenAI, Anthropic, and Google models.
Developed an administrative panel for user management, content
moderation, and knowledge base administration.
Designed and implemented prompt engineering workflows, content
generation templates, and quality assurance tools.
Implemented authentication, API integrations, state management, and
application performance optimization.
Technologies: TypeScript, React.js, Next.js, Zustand, ai-sdk (Google,
OpenAI, anthropic)