Сергій

Serhii Svidlo
Frontend Developer
[open contact info](look above in the "contact info" section) [open contact info](look above in the "contact info" section)

[open contact info](look above in the "contact info" section) github.com/sergeisvidlo4

Ukraine | Open to relocation | Remote

SUMMARY
Frontend Developer with experience in building web applications using JavaScript, TypeScript, React, Next.js, HTML,
CSS/SCSS, Tailwind CSS, REST API integration, and Zustand. In one of my projects, I implemented localization and currency
switching with English/Ukrainian translations, USD/EUR/UAH price formatting, and localized UI elements across catalog,
cart, favorites, search, and navigation.
I also have basic full-stack experience with Node.js, Express, SQL, PostgreSQL, and backend API architecture. I understand
the fundamentals of SDLC, Agile/Scrum, Git workflow, deployment, and code quality tools such as ESLint and Prettier.

PROFESSIONAL EXPERIENCE
INFUSE 10/2025 – 05/2026 | Kharkiv, Ukraine
Frontend Developer
Contributed to the development of an internal business platform used by operational and marketing teams across the
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company.
Created and enhanced interface modules for managing internal workflows, campaign-related data, and day-to-day
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business processes.
Worked with React, JavaScript, TypeScript, HTML, and CSS/SCSS to implement new functionality and improve existing
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screens.
Connected frontend features with backend services and REST APIs, ensuring reliable data exchange across platform
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modules.
Translated business requirements into practical UI solutions together with product and operational stakeholders.
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Improved platform usability by simplifying workflows, resolving interface issues, and refining existing functionality.
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Participated in feature planning, testing, bug fixing, and ongoing platform maintenance within a cross-functional
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development team.

INFUSE 03/2022 – 09/2023 | Kharkiv, Ukraine
LV Team Lead
Prepared regular performance reports using Excel and Google Sheets.
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Analyzed verification errors, workload distribution, and recurring process issues.Identified bottlenecks and introduced
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process improvements to increase team efficiency and data accuracy.
Provided feedback, training, and support to team members based on performance results.
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Communicated team results, risks, and operational issues to management.
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INFUSE 09/2019 – 03/2022 | Kharkiv, Ukraine
Lead Generation Specialist
Researched and identified potential B2B leads using online sources and internal tools.
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Collected, verified, and updated contact and company information.
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Worked with lead databases, CRM systems, and spreadsheets.
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Supported marketing and sales teams with accurate lead data.
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Maintained attention to detail and data quality while working with large amounts of information.
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PROJECTS
Nice Gadgets E-commerce App 2026 – 2026
PM / Frontend Developer
Worked as a Project Manager in a team of 6 people and helped organize the development process.
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Created and managed tasks in Jira, tracked progress through To Do, In Progress, In Review, and Done statuses.
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Coordinated communication between team members and helped resolve blockers, merge conflicts, and review
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comments.

Participated in frontend development and implemented localization for English and Ukrainian languages.
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Added language and currency switching functionality using Zustand for global state management.
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Updated price formatting and currency display for USD, EUR, and UAH.
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Localized UI elements across catalog, product cards, cart, favorites, search, and navigation.
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Worked with GitHub branches, Pull Requests, code review, and merge conflict resolution.
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DEMO GitHub
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React Todo App with API 2026 – 2026
Developer
Developed a single-page Todo application with React and TypeScript.
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Implemented REST API integration for loading, creating, updating, deleting, and filtering todos by status.
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Added form validation, loading states, error handling, optimistic UI updates, and user feedback for failed requests.
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Implemented inline editing of todo titles with Enter, Escape, blur events, and automatic deletion of empty todos.
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Managed component state using React Hooks and worked with asynchronous requests.
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Covered main application flows with Cypress end-to-end tests and fixed failing test cases.
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DEMO GitHub
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MyBike 2026 – 2026
Frontend Developer
Built a responsive landing page based on a design layout.
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Implemented semantic HTML structure and clean SCSS styles.
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Created adaptive layouts for desktop, tablet, and mobile screens.
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Used BEM methodology to keep class names and styles organized.
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Worked on spacing, typography, visual consistency, and maintainable code.
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DEMOsvg GitHub
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EDUCATION
Bachelor's Degree of Computer Science 2014 – 2018 | Kharkiv, Ukraine
Kharkiv National University of Radio Electronics

SKILLS
HTML5, CSS3, Sass/SCSS, BEM
• Tailwind CSS, Bulma, Responsive
• JavaScript, TypeScript
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Web Design
React, Next.js, React Hooks, React
• REST API, Fetch API, JSON, CRUD
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Router Zustand, State Management
• Operations

Forms, Search, Filtering, Sorting
• Loading States, Error Handling
• Node.js, Express, SQL
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Node.js, Express, SQL
• ESLint, Prettier, Chrome DevTools
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LANGUAGES
English — Upper-Intermediate (B2)