03/18/2026 updated
100 % available
Senior Fullstack Developer
Uzhhord, Ukraine
Only remote
Bachelor of Software EngineeringAbout me
I am a results-driven Full Stack Engineer with over 6 years of commercial experience building scalable, high-performance web applications. My expertise lies in bridging the gap between complex backend logic and intuitive frontend interfaces.
JavaScriptApplication Programming Interfaces (APIs)Agile MethodologyHTML5Browser CompatibilityBusiness Process ImprovementCascading Style Sheets (CSS)Software as a ServiceStatic Program AnalysisProfilingCode ReviewE-CommerceFirefoxGitHubUser Interface Design
✅ Front-End Development:
• Creating responsive, accessible UIs using HTML5, CSS, and Tailwind
• Leveraging React, Redux, Zustand, and RTK for dynamic state management
• Applying best practices for component structure, code reusability, and maintainability
• Building dashboards, admin panels, and client-facing interfaces for SaaS platforms
✅ Full Stack & Backend Integration:
• Consuming REST APIs and WebSockets for dynamic data exchange
• Implementing secure user authentication, real-time sync, and notification systems
• Collaborating with backend engineers to ensure optimal data flow and performance
• Deploying and testing integration with Replit, Firebase, and Node.js services
✅ Extension Performance & Security:
• Ensuring lightweight performance and memory efficiency using async operations
• Implementing permission control, secure messaging, and CSP compliance
• Handling sensitive data securely and preventing unauthorized access
• Profiling background scripts and optimizing DOM interactions
✅ UI/UX Excellence:
• Collaborating with design teams to build clean, user-friendly experiences
• Conducting usability tests and user feedback loops for continuous improvement
• Creating reusable design systems using Shadcn, MUI, and Styled Components
• Animating UI with Framer Motion for a modern user feel
✅ Testing & Quality Assurance:
• Writing unit and integration tests with Vitest and Jest
• Conducting code reviews and static code analysis for early bug detection
• Ensuring cross-browser compatibility (Chrome, Firefox) and mobile responsiveness
✅ Collaboration & Agile Workflow:
• Managing project workflows using Git, GitHub, and GitLab
• Leading sprints and maintaining consistent delivery using Agile methodologies
• Providing mentorship to junior devs and contributing to open-source tools
• Communicating effectively with cross-functional teams and stakeholders
? Industry Experience
? Productivity: Task managers, tab organizers, and developer productivity tools
? SaaS Platforms: Admin dashboards, data viewers, and analytics tools ? E-Commerce: Price tracking, wishlist management, and scraper tools ₿ Crypto/Web3: Wallet integrations, transaction monitors, and DAO toolkits
?️ Fitness: Web apps for training logs, habit tracking, and scheduling
? Tech Stack & Tools
• Front-End: React, JavaScript, TypeScript, HTML5, CSS, SCSS, Tailwind
• Extensions: Chrome Extension API, Plasmo, extension.js
• Backend: Node.js, Firebase, Replit, REST API, WebSockets
• UI Libraries: Shadcn UI, MUI, Chakra UI, Styled Components
• Dev Tools: Git, GitHub, GitLab, Vercel, Replit
• Testing: Vitest, Jest
? Roles & Skills:
⚛️ React / React JS / Front-End Developer
? Full Stack Developer (React, Node.js, API, Firebase, Replit)
? JavaScript / TypeScript Developer
? API Integration / Web Developer / UI Specialist
? Let’s talk about your project today!
Experience
Professional experience5 - 10 years
Freelancer since2020
Languages
GermanBasic knowledgeEnglishFluent
Project history
Led team to build high-performance e-commerce showcase from scratch. Designed full-stack solution with Next.js and Drizzle. Engineered complex GSAP scroll-animations achieving 90+ Lighthouse score. Architected event-driven microservices ecosystem using Go and Fastify with real-time synchronization.
Built responsive admin dashboards and educational platforms. Optimized performance through lazy loading and code splitting. Developed secure UI workflows for blockchain real estate and B2B wholesale platforms. Reduced UI development time by 30% through reusable component library.
Developed responsive and modern UI components for e-commerce and service-based platforms using React and TypeScript. Collaborated with backend engineers to connect UI flows with REST APIs ensuring high-performance data fetching.