Roman Ishchenko

Developed user-friendly SaaS and Fintech platforms using React.js, Node.js, and Django. Architected and consumed REST APIs supporting microservices and front-end components. Automated data ingestion and notifications via REST API calls and webhook endpoints with retry mechanisms. Enhanced webhook triggers for CRM and analytics automation. Implemented responsive designs using Styled Components and MUI. Utilized React Hooks and state management techniques for scalable front-end architecture. Focused on code reusability and performance optimization and integrated AI capabilities using Python and OpenAI tools to automate workflows and improve decision-making. Collaborated closely with UI/UX teams to create pixel-perfect and reusable components with animations.

At Spyrosoft, I developed cloud-based SaaS platforms to enhance web performance and drive revenue growth by building infrastructure from scratch using React.js and Django. I engineered front-end features improving user engagement and developed modular, testable components. Collaborated with UI/UX teams to deliver interactive interfaces, designed scalable REST APIs and webhook listeners integrating payment providers automating business processes with a 30% reduction in manual tasks. Improved event-driven automation leveraging AWS Lambda and serverless architecture combined with GraphQL for better scalability. Enhanced operational efficiency in healthcare and logistics sectors using OpenCV, RESTful APIs, and cloud platforms. Conducted performance optimizations using RUM and Google Analytics, resulting in faster website loading times. Increased code coverage by 40% with comprehensive test suites and boosted revenue by 20% through optimized checkout processes integrating Stripe, PayPal, an

Created serverless invoice management systems using React.js, Flask, AWS Lambda, and DynamoDB, integrated OCR for automated invoice processing. Developed webhook services for real-time updates in e-commerce and finance apps. Built automation routines using webhook events and RESTful API calls. Connected cloud tools via automation platforms like Zapier and custom Lambda handlers. Designed reusable component libraries for development speed and consistency. Participated in agile development, code reviews, and deployments. Developed mobile applications and optimized frontend/backend performance with techniques such as code splitting and lazy loading. Integrated payment systems (Stripe, PayPal) supporting subscriptions and automated payment reminders. Incorporated ML models and AI services for predictive analytics, NLP, and process automation across finance, healthcare, and e-commerce sectors.