Full Stack Web Developer

Led the development of customer-facing web applications serving over 5 million users, using React, Next.js, and Node.js, improving performance by 30% through optimized rendering and lazy loading. Designed and implemented RESTful APIs using Node.js and Express, integrating with Salesforce's internal data services and third-party systems; reduced API response time by 40% through caching and query optimization. Engineered scalable backend services in Go and Python, handling over 20K concurrent requests during peak usage. Built and maintained CI/CD pipelines with GitHub Actions and Docker, reducing deployment time by 50% and enabling weekly production releases. Managed infrastructure and cloud services using AWS (Lambda, RDS) and Terraform, ensuring 99.9% system uptime. Collaborated with cross-functional teams including product, UX, and QA to deliver new features ahead of schedule, increasing user satisfaction score by 12%. Led migration of legacy frontend codebase to TypeScript and React Hooks, reducing bugs in production by 25%. Mentored junior developers through code reviews and pair programming, contributing to a 15% improvement in team velocity.

Designed and implemented core backend services for an open-source data integration platform using Python and PostgreSQL, improving data pipeline throughput by 40%. Built robust data ingestion and transformation pipelines integrating with over 30 data sources, enabling enterprise customers to scale ETL operations across terabyte-scale datasets. Developed a microservices architecture using Docker and Kubernetes, reducing deployment complexity and achieving 99.5% system uptime. Introduced asynchronous job processing and scheduling using Redis, decreasing ETL task execution time by 35%. Led backend performance audits and implemented caching strategies with Redis and SQL optimization, reducing average API response times from 800ms to under 300ms. Collaborated with frontend and DevOps teams to design APIs and streamline deployment using GitLab CI/CD. Wrote extensive unit and integration tests using pytest, increasing test coverage from 62% to 91%, resulting in significantly fewer production regressions. Participated in open-source community engagement, contributing to the plugin ecosystem and improving external contributor onboarding.

Developed and maintained responsive user interfaces for restaurant management platform using React, JavaScript (ES6+), and Redux, customer usability and increasing user engagement by 20%. Collaborated with UX designers and backend engineers to implement new features, improving order processing workflows and reducing average transaction time by 15%. Optimized frontend performance by implementing code splitting, lazy loading, and reducing bundle size by 30%, resulting in faster page load times and improved user retention. Built reusable React components and maintained style consistency using Sass (SCSS) and CSS modules, contributing to a scalable and maintainable codebase. Participated in code reviews and agile ceremonies, promoting best practices and contributing to a 25% reduction in frontend bugs reported post-release. Assisted in migrating legacy frontend code to modern React architecture with hooks and functional components. Worked closely with QA teams to develop automated tests using Jest and React Testing Library, improving frontend test coverage by 40%.