Bohdan Yang Email & Phone Number

• Architected an accounting software solution using React.js/Next.js, TypeScript, and Node.js, improving financial management efficiency by 30%.• Developed a B2B/B2C transaction system using React.js, driving a 20% increase in customer satisfaction and business growth by enabling seamless transactions between users and businesses.• Optimized application performance with PostgreSQL by tuning queries and improving database schema design, reducing query execution time by 20%.• Improved performance by identifying bottlenecks, optimizing state management, and implementing lazy loading techniques, reducing page load time by 25%.• Designed and deployed scalable, cost-effective cloud solutions on AWS, leveraging EC2, S3, RDS, Lambda, and API Gateway.• Created serverless applications using AWS, reducing operational overhead and ensuring high scalability.• Automated development workflows with CI/CD pipelines, streamlining build, test, and deployment processes.• Led the development of a React Native mobile application, enhancing the platform's multi-device compatibility and expanding reach to mobile users.

• Spearheaded the development of a Partner-widget using React.js/Next.js, Typescript and Node.js, facilitating seamless integrations for insurance providers, enhancing collaboration efficiency by 20%.• Built a secure onboarding platform for customers, integrating robust authentication mechanisms, which led to a 30% increase in user trust and transactions.• Designed and maintained CI/CD pipelines using Jenkins and GitHub Actions, automating development processes and reducing deployment time by 40%.• Worked extensively with microservices architecture for payments and third-party integrations, streamlining payment processes and improving business efficiency.• Implemented Redux for state management, scaling large React applications and improving maintainability.• Designed and implemented scalable data storage solutions using MongoDB, ensuring efficient handling of high-volume datasets for the transaction system.• Managed global state in complex applications using React Context API, improving data flow and minimizing component re-renders.• Contributed to the development of a mobile app using React Native, ensuring seamless integration with the existing web ecosystem.

• Developed and maintained dynamic, responsive web applications using React and Next.js, improving user interface performance and overall user experience by 30%.• Built scalable backend APIs with Node.js and Express, integrating third-party services and databases like PostgreSQL and MongoDB for efficient data management.• Deployed and managed serverless functions on Azure, optimizing application performance by leveraging Azure Functions and Azure Logic Apps for event-driven workflows.• Implemented real-time data features using WebSockets in React applications, allowing seamless, live updates for high-traffic platforms.• Leveraged Azure DevOps for CI/CD pipelines, automating testing, integration, and deployment, reducing release cycles by 40%.

• Delivered multiple web applications using React.js, TypeScript, and Node.js, driving a 25% increase in user engagement and strengthening the company’s digital presence.• Implemented unit and end-to-end tests with Cypress and Jest, improving code quality and catching bugs earlier in the development cycle.• Collaborated cross-functionally with design, backend, and QA teams to deliver high-quality, user-centric software solutions.• Developed and maintained data-driven web applications with React.js and MySQL, enhancing backend management of posts and events.• Leveraged Azure DevOps for smoother development operations and improved deployment workflows, resulting in enhanced productivity.• Conducted browser compatibility testing, providing critical insights that shaped the development of features tailored to user needs.