Collaborated with the CTO to implement a comprehensive testing infrastructure, utilizing Jest, Supertest, and Playwright for unit, integration, and end-to-end testing. This initiative significantly reduced errors and enhanced code reliability. Transformed a desktop application codebase from JavaScript to TypeScript, leading to a 40% improvement in code maintainability and a 25% reduction in runtime errors. Introduced GitHub CI/CD workflows, Eslint, and Request for Comments (RFC) processes, resulting in more efficient code reviews and deployments. Additionally, managed external APIs such as Stripe for payment management and Jira for issue tracking, greatly improving project tracking and payment processing. This diverse skill set ensures the ability to contribute effectively and drive impactful results for the team.