Cat

Danylo
Mosienko

Danylo Mosienko
01 / Summary
Web Developer focused on Frontend with Backend experience. I build high-performance applications and adaptive interfaces, combining technical engineering with a design-driven mindset. Proficient in using AI tools for code optimization and workflow automation. My background in digital design and system administration allows me to handle full-cycle project tasks and technical infrastructure.
02 / Technical Stack

Web Dev (Core)

JavaScript (ES6+), TypeScript, React, Next.js, Node.js, Zustand/Redux Toolkit, TanStack Query, HTML/CSS (SCSS/SASS, Tailwind CSS, Shadcn UI), REST API, WebSockets.

Development Tools

Git, GitHub, Webpack, Vite, PNPM/Bun (NPM/Yarn), DevTools, Linux CLI, Postman.

Engineering & Architecture

Clean Code (SOLID, DRY), Feature-Sliced Design (FSD), SSR/SSG/ISR Optimization, Web Performance Optimization, CI/CD (GitHub Actions).

AI & Automation

AI Prompt Engineering and leveraging advanced AI tools (LLMs, Copilot, Cursor, Claude Sonnet) for refactoring, deep optimization, and routine automation.

Testing & CMS

Vitest / Jest (Unit Testing), Playwright (E2E). WordPress, OpenCart, MODX, Tilda, and custom integrations.

Design & Media

Figma (UI/UX Prototyping & Wireframing), Adobe Photoshop (Web & Advertising Design, Advanced Visual Processing), DaVinci Resolve (Video Production).

Systems & Infrastructure

Docker & Docker Compose, Nginx, Linux/Windows System Administration, Server Hardware & Network Infrastructure, Systems Troubleshooting & Optimization.

03 / Experience

Full-Stack Developer & Technical Specialist | 2021 – Present

Core Technical Engineering & Adaptation

  • Tier 1-2 GEO Engineering: Performing full-cycle technical preparation and deep adaptation of landing pages for high-traffic markets. Extensively restructuring codebases, implementing custom technical solutions, and performing deep JS/API engineering to ensure maximum stability and conversion.
  • Performance Optimization: Maximizing load speeds and performance (Google PageSpeed), ensuring infrastructure stability, SEO improvement, and configuring advanced caching with comprehensive asset optimization.
  • Automation & AI: Developing custom scripts for system integrations and functional enhancements. Leveraging neural networks for data analysis, rapid development, and process optimization.

Web Development & CMS Management

  • Full-Cycle Development: End-to-end development of new projects and editing existing sites, improving functionality, user experience, and overall technical support.
  • Platform Management: Full-cycle development and maintenance using WordPress, OpenCart, MODX, and Tilda (custom features & bug fixing).
  • Content Localization & Copywriting: Technical translation and adaptation of ad copy for diverse cultural contexts, ensuring high engagement and linguistic accuracy.

Design & Multimedia Production

  • Graphic Design (Photoshop): Advanced raster graphics production. Full cycle of retouching, complex photo montage, and asset creation for web, social media, and UI.
  • UI/UX Design (Figma): Prototyping interfaces and designing visual elements with a focus on cross-device responsiveness and user interaction.
  • Video Production: Advanced video editing, motion graphics, and high-quality content creation using DaVinci Resolve for various digital formats.

Technical Operations & Systems

  • System Administration: Comprehensive management of software environments, OS setup (Windows/Linux), and ensuring overall operational stability.
  • Infrastructure Support: Hardware diagnostics, PC/Server configuration, network troubleshooting, and resolving complex technical issues.
04 / Background

Education

Specialist Degree in Electrotechnical Engineering.

Languages

English (B2),
Ukrainian (Native),
Russian (Native),
Slovak (Learning).

Other

Driving License (Category B).

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