Анатолій

Anatolii Semochko
Albania (Remote) | [open contact info](look above in the "contact info" section) | LinkedIn
Summary
Senior Full Stack Engineer with over 12 years of experience designing scalable web and e-commerce solutions and a strong focus on blockchain
development. Skilled in JavaScript/TypeScript with expertise in React, Next.js, Node.js and hands-on experience integrating smart contracts using
web3.js and Solana. Proven track record optimizing performance and building responsive interfaces in distributed teams, now targeting senior Web3
full-stack roles.
Speacking languages
• English (Strong B2)
• Ukrainian (native)
• Polish (C1)
• Russion (C2)
Stack of technologies
• Backend Development: PHP, Symfony, Yii2, Prestashop, Joomla, MySQL, Mongo DB, PostgreSQL, Redis, JavaScript, Node JS, Express,
TypeScript, Microservices architecture, WebSockets services, RabbitMQ queues services, Elasticsearch, Sphinx
• Frontend Development: HTML5, CSS3, Boostrap, React, VueJS, Angular, jQuery
• Blockchain & Web3: Solana, web3.js, Smart Contracts (design, development, integration), NFT (design, development), Metaplex service
integration, Crypto Wallets (design, development, integration)
• AI / ML Integration: OpenAI API, AI Agents, Prompt/Context engineering, Tools engineering, RAG integration
Projects Experience
Digital data registration platorm based on blockchain infrastucture (Solana)

AI logistic assistent-manager system

Logistic transportation systems

Development of a delivery management systems

Route optimization

Carrier API integration

Data parsing and aggregating systems

Booking platform

Online booking for sporting events

Classifieds site

Payment system integration

Working Experience
Platinium Group | Full Stack Developer (Contract, Full-time) Sep 2019 - Apr 2026
• Full-time contract employment in a distributed international team
• Full Stack Developer position
• Development and maintenance of scalable web3-enabled applications and e-commerce platforms, integrating smart contracts
• Performance optimization
• Docker-based environments
• Git versioning
• Backend based on Node JS and TypeScript, PHP, Symfony, MySQL, REST API
• Frontend based on React, Next.js, VueJS, Angular, jQuery, Bootstrap
• RabbitMQ queues
• Cloud storages
Echo UA | Full Stack Developer (Contract, Full-time) Aug 2018 - Aug 2019
• Full-time contract employment in a distributed team building solutions with web3.js
• Full Stack Developer position
• Development and support of web applications
• Implementation of analytics and data processing systems
• Docker-based environments
• Git versioning
• Backend based: PHP, Symfony, MySQL, REST API, integrating ethers.js for smart contract interactions
• Frontend based on: Angular, jQuery, Bootstrap
Logisic System | Full Stack Developer (Full-time) Mar 2011 - Jul 2018
• Full-time employment
• Full Stack Developer position
• Development and support of web applications