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Arseniy
Tisyachnik

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11
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About me
I'm a Full-Stack Developer with hands-on experience in JavaScript, React, Node.js/Express, HTML/CSS, and Git. I build responsive, functional web applications - including a full e-commerce project with product catalog, shopping cart, and REST API integration. Technical skills: Frontend: React.js, HTML5, CSS3, responsive design Backend: Node.js, Express.js, REST APIs Tools: Git, GitHub, VS Code, npm In 2024 I completed the Freshcode web development bootcamp, finishing as 2nd best student in my group. I'm currently studying Programming at ZIEIT (Ukraine). I'm highly self-disciplined, a fast learner, and motivated to take on real freelance projects. I work well independently and communicate clearly in English (B2) and German (B1). I'm open to junior-friendly projects, small-to-medium tasks, and long-term collaboration with clients who value reliability and growth potential.

Work experience

ATTA
March 2026 – May 2026
Job title
FullStack Web Developer
Work experience & achievements
Developed a high-performance e-commerce ecosystem using Next.js 15 (App Router) and a microservices-oriented Fastify architecture. Key Technical Achievements: Frontend: Built with React 19, TypeScript, Zustand, and TanStack Query. Features a responsive UI, i18n support, and animations (Framer Motion, Lenis). Backend: Robust REST API via Fastify, Prisma ORM, and PostgreSQL. Optimized for security (CORS, Helmet, Rate Limiting). Core Logic: Architected a multi-step checkout with complex validation (Zod), Nova Poshta integration, and dual-payment processing. Admin & Ops: Secure JWT-authenticated dashboard with real-time Recharts analytics, S3/Sharp image processing, and automated Telegram order notifications. DevOps & QA: Hybrid deployment (Cloudflare Pages/VPS), comprehensive Vitest coverage (unit/smoke tests), and Sentry error tracking. Project: atta-porcelain.com
MANO
April 2026 – May 2026
Job title
FullStack Web Developer
Work experience & achievements
Designed and developed a scalable, custom-built e-commerce platform. Technical Stack: Frontend: React.js and JavaScript for a responsive, seamless user experience. Backend: Node.js, Express.js, and custom REST API architecture. Database: PostgreSQL for efficient management of products, users, and orders. DevOps/Tools: Git, Docker, and seamless API integrations for payments and analytics. Key Achievements: Modular Architecture: Engineered a maintainable system designed for easy scalability and clean code implementation. Advanced CMS: Built a comprehensive admin dashboard for full control over product catalogs, real-time order tracking, and user data. Data-Driven Analytics: Implemented a module to monitor sales, user behavior, and conversion funnels to drive business insights. Security & Performance: Optimized endpoints for fast load times and secure data handling. Project: mano-ceramics.com

Education

ZIEIT
Graduation year: 2026
Level of study
Bachelor
Major / Field of study
Computer Science