ksotnykov

Delivered blockchain projects for secure transaction management and soft data storage. Developed front-end applications with React, Redux, MUI, and TypeScript, including unit test coverage. Built robust back-end systems using Node.js, Koa, Sequelize (PostgreSQL), and web3 libraries. Developed a React Native mobile application from the ground up and successfully deployed it to the App Store through an automated GitLab CI pipeline. Created a proof-of-concept (POC) application leveraging NestJS and WalletConnect to demonstrate innovative blockchain solutions. Spearheaded infrastructure optimization by introducing Docker, GitLab CI, and automated code quality tools such as ESLint and Prettier. Expanded knowledge in Solidity to support smart contract development, contributing to enhanced project capabilities.

Led the development of a document management service featuring electronic signature functionality using Cypher, enhancing document security and efficiency. Created a document generation and signing system, fully managing the project with one team member under supervision, resulting in streamlined document processing. Contributed to an internal employee portal with role-based hierarchy, focusing on front-end development and ElasticSearch integration, improving user access control and search functionality. Utilized technologies such as Node.js, Vue.js, Docker, PostgreSQL, Redis, and CI/CD pipelines to enhance application performance and deployment efficiency. Distributed tasks among team members and contributed to mobile application development, leading to improved team productivity and application functionality.

Contributed to the development of a messaging platform with audio/video call features and social media login integration, enhancing user engagement. Designed and implemented front-end interfaces for chat and conference systems, handling both UI and business logic, which improved user interaction and system efficiency. Led a front-end team of three developers, overseeing task distribution and ensuring timely delivery, which resulted in meeting project deadlines consistently. Utilized Vue.js, GraphQL, and OAuth to build scalable and interactive solutions, leading to improved application performance and user satisfaction.

Developed a website for a skyscraper using Vue.js and Fabric.js, allowing users to explore floor layouts, individual room plans, and panoramic views with point-based highlights of key facilities, enhancing user engagement and satisfaction. Implemented new features like room-specific panoramas and technical details using Vue.js and Fabric.js, improving user experience and providing detailed insights into room specifications.

Created websites of varying complexity, incorporating animations and modern web design, which improved user engagement and satisfaction. Specialized in responsive and interactive UI development using HTML, CSS, Bootstrap, and jQuery. Worked independently on a car rental project in Canada, building the front-end with Vue.js and converting it into a PWA to enhance offline functionality. Integrated the application with back-end APIs and ensured seamless data flow.