Serhii

SERHII MASHNIN
FRONT END DEVELOPER

CONTACT SUMMARY
Front-End Developer with practical experience in JavaScript, React,
+ 380 97 877 744 44 HTML5, CSS3, SCSS, Tailwind, Zustand, and TanStack Query. Familiar
[відкрити контакти](див. вище в блоці «контактна інформація») with Supabase, SQL, Node.js, and Stripe integration. Background in
running a family construction business, where I developed a landing
Ukraine | Kharkiv
page, set up SEO and Google Ads campaigns, and improved internal
GitHub processes. This mix of technical skills, business insight, and teamwork
experience helps me approach web development with both a
LinkedIn
developer’s precision and an entrepreneur’s mindset.

SKILLS PORTFOLIO
Frontend Development: NICE GADGETS — E-COMMERCE PLATFORM

JavaScript (ES6+), React, HTML5, Full Stack Developer 2025 Demo

CSS3, SCSS, Responsive Design, Implemented responsive layouts and user-friendly features for
the home page, navigation, and product display.
Tailwind, Shadcn
Worked with Supabase and SQL for backend data management,
Tools & Workflow: Git, GitHub,
and integrated Stripe for payments.
VS Code, Jiro for project
Used Tailwind CSS for styling and Zustand for state management.
planning
Contributed to version control and agile teamwork, gaining
Additional Skills: SEO practical experience in real project development.
optimization, Google Ads
targeting & campaign TO-DO APPLICATION Demo Code

management Front-End Developer 2025

Soft Skills: Fast learner, Built a task management application with server-side storage for
persistent data.
problem-solving mindset,
Implemented fetch logic for creating, updating, and editing tasks
teamwork, adaptability
directly from the server.
Styled the interface using the Bulma framework for a clean and
responsive design.
Utilized TanStack Query (React Query) to handle asynchronous

LANGUAGES data fetching and state synchronization.

English: Upper-Intermediate MYBIKE — LANDING PAGE Demo Code

Ukrainian: Native Front-End Developer 2025
Developed a fully responsive and interactive website with HTML
and SCSS, ensuring clean design, strong usability, and
accessibility.
Optimized code structure with modular SCSS, using mixins,
variables, and BEM methodology for scalability and
maintainability.
EDUCATION WORK EXPERIENCE
V. N. KARAZIN KHARKIV FAMILY CONSTRUCTION BUSINESS
NATIONAL UNIVERSITY Project Coordinator & Web Support 2017 – 2024
Master’s degree, specialization
Developed and launched a company landing page to showcase
Applied Physics
2014 - 2016 services and attract clients.
Set up and managed targeted advertising campaigns in Google
ACHIEVEMENTS Ads, improving lead generation and increasing the client base by
40%.
Completed 10,000 km cycling in
one year, demonstrating Redesigned the salary distribution system, which increased
discipline and perseverance.
employee motivation and efficiency.
Maintained a 70-day streak of Coordinated construction projects, communicating with clients
cycling at least 20 km per day. and contractors to ensure quality and deadlines.
Strava link
Oversaw day-to-day operations and maintained smooth team
collaboration.