Serge

Markelov

Main responsibilities: - Developed new modules and refactoring existing ones for a large data SaaS application. - Conducted code reviews. Achievements worth mentioning: - In the process of optimizing the number of module rerenders, I developed and implemented approaches to reduce the number of rerenders by 4-5 times. - By eliminating unnecessary memoization, I simplified the code in the components and significantly reduced the amount of memory consumed by the application by 5-10% (for a highly loaded application, this represents a substantial saving). - Based on the implemented optimizations, I prepared and delivered internal reports. These reports led to the development of new guides by my colleagues and me, which further reduced the number of rerenders and the amount of outdated code.

Main responsibilities: - Created an interface using a UI kit with React/TypeScript. - Created components with animations, developing a library of components in Storybook. Achievements worth mentioning: - Developed a library of basic interface components in Storybook using React and TypeScript patterns, reducing the time for repetitive actions and increasing the speed of event project development by 50-100%.

Main responsibilities: - Created a pixel-perfect layout based on Figma layouts, incorporating JS/Three.js/GSAP animations and interactivity. - Collaborated in large and small teams on an outsourced basis, with interaction via git. - Implemented interactive GSAP/Three.js animations in single-page applications (SPAs) using React and Vue. Achievements worth mentioning: - Boosted the landing page conversion of the pop-up trading network by 170%. - Implemented gamification in the employee admin dashboard, increasing animation performance and reducing the loaded mass by 3-4 times. - Developed an analog of StoryBook for creating individual project components, reducing compilation time from several minutes to several seconds, and enhancing the speed of layout and animation development. - Rewrote the effect animation using Three.js shaders and transferred calculations from the CPU to the GPU, allowing for an increase in the number of animated elements from hundreds to several thousand, whi

Main responsibilities: - Created a pixel-perfect layout based on Figma layouts, incorporating JS/Three.js/GSAP animations and interactivity. - Developed templates from designed PHP pages for landing on WordPress. - Built a layout for a React SPA. Achievements worth mentioning: - Boosted online orders for a 3D printing agency by 340% by developing a custom calculator from scratch to compute the cost of 3D printing online: https://markeloff.site/portfolio/3d-quoter/ - Increased the conversion rate of a digital promotion agency by 185% by creating a new website from scratch, incorporating WOW effects and animations, and enhancing the level of trust in the site while increasing the average time on the site: https://providesite.markeloff.site/

Main responsibilities: - Crafted website layouts from scratch, incorporating animation and landing on WordPress. - Developed pixel-perfect layouts based on Figma and Adobe layouts, ensuring visual consistency and user experience. - Performed website maintenance, addressing layout and UX issues on various websites. - Built responsive website layouts using Bootstrap 4 for optimal user experience across devices.