Skills
- Node.js
- NestJS
- Express
- microservices
- TypeScript
- AWS (ECS, RDS, S3, Lambda, SNS/SQS)
- REST APIs
- PHP
- GraphQL
- WebSockets
- Swagger/OpenAPI
- PostgreSQL
- MySQL
- MongoDB
- Redis
- Kafka/BullMQ
- Supabase
- JavaScript
- React
- Next.js
- TanStack (query, form, router)
- Zustand
- Zod
- shadcn/ui
- TailwindCSS
- Vite
- Webpack
- LLM/ML
- Anthropic/OpenAI
- RAG
- n8n
- Claude
- Codex
- Qwen
- Docker/Docker Compose
- CI/CD pipeline
- GitHub Actions
- Linux
- Grafana
- Magento 2
- Laravel
- WordPress
- YII2
- Playwright
- Jest
- Cypress
- Vitest
Experience
Full Stack Engineer | Omnicore
- Stabilized high-load Node.js production services by diagnosing and eliminating critical memory leaks, reducing server RAM usage by 28% and ensuring long-term application uptime in high-traffic environments while avoiding unnecessary infrastructure costs
- Improved system reliability during peak traffic periods by designing caching strategies using Redis and Varnish, reducing database pressure and helping maintain stable performance during high-traffic e-commerce events.
- Engineered a highly scalable asynchronous job processing backend using Nest.js, Kafka, and Redis to ingest transaction and real-time checkout records for global multi-tenant e-commerce operations, effortlessly absorbing traffic spikes of 15k+ RPS during global sales surges.
- Built and maintained background processing workflows using BullMQ/Redis for asynchronous tasks such as notifications, emails, exports, webhook handling, and third-party synchronization.
- Optimized the checkout API response time by 24%, contributing to a 12% increase in successful checkout conversions during high-traffic holiday sales (Black Friday/Cyber Monday).
- Spearheaded front-end performance initiatives that boosted Core Web Vitals by 30%, directly increasing conversion rates for global retail brands (Puma, Adidas, New Balance, MDFashion, Ultrashop).
- Reduced technical debt by refactoring complex legacy code into modular, reusable, and easier-to-maintain components, improving development speed and reducing regression risk.
- Planned and implemented configurable Redis and Varnish caching mechanisms, reducing server load by 30% and saving infrastructure costs.
- Node.js
- Express
- Nest.js
- Redis
- BullMQ
- TypeScript
- React
- Next
- PHP
- Magento2
- YII2
- Laravel
Full Stack Engineer | VIS-A-VIS
- Integrated backend services with AWS S3, Lambda, SNS and SQS for file storage, asynchronous processing, decoupled messaging, and event-driven workflows.
- Applied strict design patterns, automated testing, and performance optimization best practices for major enterprise clients, including Raiffeisen bank and Vodafone.
- Documented and preserved REST APIs using Swagger/OpenAPI, improving integration clarity for frontend developers, QA, and external consumers.
- Improved resilience of third-party integrations by handling timeouts, retries, duplicate events, delayed webhooks, and failure scenarios more safely.
- Optimized API and page performance via custom Redis and Varnish caching strategies, improving response times by 45% while reducing cloud database provisioning costs.
- Developed highly complex, multi-step application forms featuring intricate validation logic and bulletproof global state architectures.
- Node.js
- Express
- Nest.js
- Redis
- BullMQ
- TypeScript
- React
- Next
- AWS (S3, Lambda, SNS/SQS)
- Swagger/OpenAPI
- PHP
- Laravel
Full-Stack Developer (WordPress) | UpWork
- Designed and constructed bespoke WordPress ecosystems completely from scratch, including custom theme development, database configurations, and scalable frontend architectures.
- Audited and optimized resource allocation AWS S3, reducing monthly cloud infrastructure costs by 33%.
- Directed performance optimization initiatives that significantly reduced page load times and maximized Core Web Vitals, directly improving client SEO rankings and user engagement.
- Delivered robust code quality prioritizing bulletproof cross-browser compatibility, high scalability, and clean component structures for effortless long-term maintenance.
- JavaScript
- React
- Next.js
- TypeScript
- TailwindCSS
- Node.js
- Express
- PHP
- WordPress
- JavaScript
- LESS
- jQuery
- MySQL
Web Developer | Bayel
- Developed and scaled a responsive web platform using PHP, JavaScript, HTML, and CSS, leveraging SEO best practices and increase in organic traffic by 40%.
- Built a high-converting web presence while managing targeted Google Ads campaigns that boosted click-through rates by 20% and significantly reduced customer acquisition costs.
- Built and maintained website with php, HTML, CSS, JavaScript.
- HTML
- CSS
- TypeScript
- JavaScript
- PHP
- jQuery
Projects
Adidas
A website for Adidas Ukraine, developed in collaboration with the Adidas global team. The app offers a seamless shopping experience, personalized recommendations, and exclusive content for Ukrainian customers.
- Vue
- Nuxt
- TypeScript
- Express
- node.js
- Docker
- MySQL
- Redis
Puma
Puma is the official online store for Puma products in Ukraine. The platform offers a wide range of athletic footwear, apparel, and accessories, providing customers with a seamless shopping experience and exclusive deals.
- React
- JavaScript
- PHP
- Magento2
- MySQL
- Redis
- Docker
Answear
Answear.ua is a leading online fashion retailer in Ukraine, offering a wide range of clothing, footwear, and accessories. The platform provides a user-friendly shopping experience with personalized recommendations and exclusive deals.
- React
- React Router
- TypeScript
- Next
- Node.js
MD Fashion
MD Fashion is a popular online fashion store in Ukraine, offering a wide selection of clothing, footwear, and accessories. The platform provides a seamless shopping experience with personalized recommendations and exclusive offers.
- Vue
- jQuery
- JavaScript
- Yii2
- PHP
- MySQL
- Redis
- Docker
New Balance
New Balance is the official online store for New Balance products in Ukraine. The platform offers a wide range of athletic footwear, apparel, and accessories, providing customers with a seamless shopping experience and exclusive deals.
- Vue
- jQuery
- JavaScript
- Yii2
- PHP
- MySQL
- Redis
- Docker
Pyshna Krasa
Pyshna Krasa is a popular online store in Ukraine, specializing in plus-size clothing for women. The platform offers a wide selection of fashionable and comfortable clothing options, providing customers with a seamless shopping experience and personalized recommendations.
- React
- TypeScript
- Konva.js
- jQuery
- PHP
Reserved
Reserved.com is a popular online fashion retailer in Ukraine, offering a wide range of clothing, footwear, and accessories. The platform provides a user-friendly shopping experience with personalized recommendations and exclusive deals.
- React
- TypeScript
- PHP
- Magento2
- MySQL
- Redis
- Docker
Ultra Shop
Ultra Shop is a leading online retailer in Ukraine, offering a wide range of products including electronics, home appliances, and fashion. The platform provides a seamless shopping experience with personalized recommendations and exclusive deals.
- Vue
- JavaScript
- Yii2
- PHP
- MySQL
- Redis
- Docker
Raifaizen Bank Aval
Raifaizen Bank Aval is a leading financial institution in Ukraine, offering a wide range of banking services to individuals and businesses. The platform provides a seamless online banking experience with personalized recommendations and exclusive offers.
- Vue
- JavaScript
- PHP
- Laravel
- MySQL
- Redis
- Docker
Vodafone
Vodafone is a leading telecommunications company in Ukraine, providing a wide range of mobile and internet services. The platform offers a seamless online experience for customers to manage their accounts, access exclusive deals, and stay connected.
- Angular
- TypeScript
- PHP
- MySQL
- Redis
- Docker
Languages
- English (B2)
- Ukrainian (C2)
- Russian (C2)
- Spanish (A1)