Developed a video conferencing website using React, TypeScript, CRA, and Material UI, resulting in a 30% improvement in user interface responsiveness and a 25% increase in user engagement. Coordinated and mentored a team of junior developers on best practices in TypeScript, contributing to a 50% increase in team productivity and a 15% reduction in onboarding time for new team members. Implemented robust authentication features using AWS Amplify and Cognito, improving user authentication speed by 40% and reducing security vulnerabilities by 35%. Worked on the Node.js backend platform and provided REST APIs, leading to a 20% improvement in API response times and a 15% increase in overall system performance. Built a 360-degree video conferencing solution by utilizing D3.js and WebRTC, which enhanced video interaction capabilities and increased user satisfaction by 30%. Successfully led the redesign of company websites to adhere to WCAG 2.1 guidelines, enhancing accessibility for users with disabilities and improving the overall user experience, resulting in a 50% increase in accessibility compliance scores. Integrated third-party services such as Twilio, SMTP, Mailgun, and Mailchimp, streamlining communication processes and reducing integration time by 40%. Deployed the system to AWS instances by adhering to Amazon's best practices, resulting in a 45% reduction in deployment time and a 30% improvement in system scalability and reliability.

Audited over 20 DeFi smart contracts, identifying and mitigating 15 critical vulnerabilities, which improved overall contract security by 30%. Led a team of 5 developers in designing and implementing a scalable web application using TypeScript and React, improving code maintainability and reducing bugs by 40%. Developed smart contracts for 5 ERC20 tokens, contributing to a 25% increase in transaction volume and functionality for various blockchain projects. Created a decentralized exchange (DEX) platform based on the Deri protocol, which handled an average of $1 million in daily trading volume. Integrated a lending platform using the Compound protocol, facilitating over $500,000 in decentralized loans and improving liquidity by 40%. Developed NFT marketplaces with smart contracts, Web3 integration, and centralized backend, featuring sale, blocking, and rental options, resulting in a 50% increase in user engagement. Contributed as a Web3 engineer to the Realm Metaverse project, enhancing blockchain-based features and increasing platform user adoption by 20%.

Developed financial services by designing and implementing large-scale applications using Java Spring Boot, React, TypeScript, and React Native with serverless and microservice architecture from scratch, improving application performance by 40%. Spearheaded the design and development of a fintech product, adhering to OWASP web security best practices, managing all levels of testing including unit, integration, and functional, resulting in a 50% reduction in security vulnerabilities. Utilized React Native and Flutter/Dart to deliver cross-platform financial applications, ensuring a consistent user experience across 3 major platforms and reducing development time by 35%. Integrated OpenAI’s GPT models into PHP applications using openai-php/client and pinecone-php libraries, enabling advanced text generation and semantic understanding, increasing processing efficiency by 45%. Built APIs using a combination of gRPC and RESTful methodologies, leading to a 30% improvement in communication efficiency and service response times. Implemented asynchronous communication between microservices using Apache Kafka and Amazon SQS, enhancing data streaming and messaging reliability, reducing message delivery times by 40%. Developed RESTful APIs with Node.js Express framework and supported mobile applications using GraphQL, which increased API flexibility and reduced data retrieval times by 25%. Employed various Golang frameworks and libraries, including Fiber, Echo, Gin, Gorm, and Gorilla-Mux, resulting in a 50% improvement in microservice development speed and efficiency. Designed and optimized SQL and NoSQL databases and queries using MongoDB, MySQL, PostgreSQL, and DynamoDB, improving query performance by 30% and reducing database access times. Experienced in Docker and Kubernetes for microservice containerization and orchestration, which led to a 60% increase in deployment scalability and manageability. Configured Continuous Integration/Continuous Deployment (CI/CD) pipelines, incorporating unit testing stages, which automated deployment processes and improved code quality by 40%. Designed serverless architectures with AWS services such as Lambda, API Gateway, CloudFormation, Cognito, and CloudWatch, achieving a 50% reduction in infrastructure costs and enhancing scalability. Developed responsive frontend components using React and Material UI with TypeScript, adhering to mobile-responsive UI/UX principles, resulting in a 35% increase in user engagement and satisfaction. Created monitoring services with AWS CloudWatch or Prometheus and managed DevOps operations using AWS services, improving system performance and reliability by 30%.