Tony J.

Led Agile sprints and collaborated with cross-functional teams to deliver high-impact, client-facing features. Improved dashboard performance by 45%, cutting load times from 5 to 2.75 seconds, enhancing user experience. Built scalable RESTful APIs with Auth0 OAuth authentication using Express.js, supporting secure user access. Optimized deployment pipelines with Docker and Kubernetes, reducing deployment time by 40%. Mentored junior developers on clean code and Git workflows, increasing team code quality by 35%. Increased user retention by 20% through targeted A/B testing and data-driven feature improvements. Ensured mobile-first responsive design and cross-browser compatibility for seamless performance across devices. Championed the adoption of continuous integration and deployment (CI/CD) practices to accelerate release cycles and improve software reliability. Collaborated closely with UX designers to create intuitive interfaces that increased user satisfaction and engagement. Automated monitoring and alerting systems to proactively identify and resolve production issues, minimizing downtime. Participated in code reviews and architectural discussions to improve system scalability and maintainability.

Developed UI components using React and Redux for a SaaS product with 50,000 monthly users. Improved onboarding flow by 30%, reducing user time from 10 minutes to 7 minutes. Collaborated cross-functionally with product managers and designers in a team of 10 to deliver pixel-perfect designs across 3 major feature rollouts. Refactored legacy code into reusable components, reducing technical debt by 40% and improving maintainability for the engineering team. Integrated analytics tools (Amplitude, Google Analytics), enabling an 18% improvement in data-driven product decisions. Led QA processes and debugging for major production releases with budgets exceeding $1M, impacting clients in fintech and healthtech sectors. Coordinated with the Lead Front-End Engineer and contributed to Agile deliverables using Scrum methodology across multiple time zones. Implemented webpack optimizations and server-side rendering, reducing initial page load time by 35%, from 4.6 seconds to 3.0 seconds. Contributed to Agile methodologies and implemented DevOps practices such as automated test pipelines to support continuous delivery. Authored frontend documentation and internal UI usage guidelines to ensure consistency and streamline onboarding of new developers. Spearheaded the adoption of modern front-end frameworks and best practices to improve development efficiency and code quality. Worked closely with backend teams to integrate APIs seamlessly, ensuring smooth data flow and consistent user experiences.