• Developed an internal application using JavaScript, CSS, HTML, React.js, and Python for market data monitoring and analysis, utilized across 8 teams

• Improved popups utilizing JavaScript, React, Webpack, and DevTools, resulting in a 500 ms reduction in load time

• Optimized application performance using JavaScript, third-party APIs, and DevTools, reducing peak CPU usage by 19% and peak memory usage by 17%

• Implemented business logic using Python and the Tornado framework, processing up to 10 million data points per day

• Conducted code reviews, ensuring adherence to coding standards and identifying performance enhancements

• Skilled in source control management and collaborative development for efficient teamwork and project management

• Contributed to large-scale web applications using JavaScript, CSS, HTML, Redux, and React.js for customer onboarding, enabling the creation of over 50,000 new accounts daily

• Redesigned and improved the user experience by implementing A/B experiments with JavaScript, JSON, and Node.js, resulting in a 5% increase in the activation rate

• Wrote comprehensive unit tests and functional tests using Nemo.js, Jest, and React Testing Library, ensuring product quality with more than 95% test coverage.

• Participated in more than 400 code reviews and provide feedback to increase code quality and transfer knowledge

• Collaborated with project managers, designers, and stakeholders to align goals and resolve issues, achieving a 94% on-time delivery rate for tasks.

• Implemented business logic with JavaScript, Node.js, and Express.js in the back-end application

• Proficient in consuming RESTful APIs using HTTP methods to integrate backend services into frontend applications

• Experienced with CI/CD software and processes including automated testing, version control, and deployment pipelines

• Triaged live issues and utilized product logs and development tools for debugging to resolve the issues

• Conducted source control management and code review using Git and GitHub

• Created clear, concise, and accessible documentation, leading to a 4x increase in developer productivity