Oleh Kolesnyk
Senior Front-end Developer
Gdansk
Summary
Logical and results-driven Web Developer dedicated to building and optimizing user-focused websites for customers with various business objectives. Judicious and creative when crafting effective websites, apps and platforms to propel competitive advantage and revenue growth. Technically proficient and analytical problem solver with calm and focused demeanor.
Overview
4
4
years of professional experience
1
1
Certification
Work History
Front-End Web Developer
Welltech
02.2022 - Current
- Platform Development: Played a key role in developing a platform designed to attract customers and facilitate the purchase of mobile applications.
- Technologies Used: Employed a wide range of technologies including Next.js, styled-components, TypeScript, React Query, Playwright, and Webpack to ensure high performance and scalability.
- Internal Tools and Plugins: Developed a Figma plug-in to streamline the transfer of design content to the platform, enhancing efficiency and reducing manual work.
- Content Display Tool: Created a separate tool for displaying content on the platform, ensuring seamless integration and optimal user experience.
- Quality Assurance: Conducted thorough testing using Playwright to ensure the platform's reliability and functionality across various scenarios.
- Collaboration: Worked closely with cross-functional teams, including designers and backend developers, to align on project goals and deliverables.
- Admin Panel Development: Currently working on an admin panel designed to help create unique flows and configurations for our templates. This includes integrating product-specific rules and ensuring a seamless user experience. Developed and maintained Wellfunnel, an internal tool used for creating links that facilitate the user acquisition process for web projects.
Middle Front-end Developer
Halo-lab
12.2020 - 02.2022
- Medical Platform: Developed a comprehensive admin panel for a medical platform, allowing for efficient management of data and user interactions.
- Main Store Module: Designed and implemented a module for the main store, enhancing the platform's functionality and user interface.
- Technologies Used: Leveraged React and Next.js along with RESTful API requests to build robust and scalable components.
- Internal Projects: Led the development of an internal project, including the backend using Nest.js and MongoDB, as well as the frontend, ensuring a seamless user experience.
- API Integration: Integrated various APIs to enhance the platform’s capabilities and streamline data flow.
- Code Optimization: Focused on optimizing code for performance and maintainability, implementing best practices and design patterns.
Front-end Developer (Vue.js / React)
Asferro
02.2020 - 12.2020
- Business Applications: Developed a range of business applications, tailoring solutions to meet specific client needs and business objectives.
- Frameworks: Utilized both Vue.js and React to build dynamic and responsive user interfaces.
- GraphQL and RESTful APIs: Implemented GraphQL and RESTful API requests to facilitate efficient data retrieval and manipulation.
- TypeScript Integration: Employed TypeScript for type safety and improved code quality, ensuring robust application development.
- Cross-functional Collaboration: Worked closely with backend developers and UX/UI designers to ensure cohesive and efficient project execution.
- Project Management: Managed multiple projects simultaneously, meeting deadlines and maintaining high standards of quality.
Education
Master of Science - Mechanical Engineering Technologist
Odessa National Polytechnic University
Odessa 04.2001 -
Skills
JavaScript expertise
Nodejs basics
Git Version Control
HTML5 Mastery
React Proficiency
TypeScript Fundamentals
Redux State Management
Jest Testing Framework
CSS3 expertise
Progressive Web Apps
UI and UX principles
Languages
Ukrainian, Russian
Native language
English
Intermediate
B1
Certification
Front-end Pro-Hillel Computer School (IT School): Link to certification - https://certificate.ithillel.ua/view/21488867/en
Timeline
Front-End Web Developer
Welltech
02.2022 - Current
Middle Front-end Developer
Halo-lab
12.2020 - 02.2022
Front-end Developer (Vue.js / React)
Asferro
02.2020 - 12.2020
Front-end Pro-Hillel Computer School (IT School): Link to certification - https://certificate.ithillel.ua/view/21488867/en
01-2020
Master of Science - Mechanical Engineering Technologist
Odessa National Polytechnic University
04.2001 -
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