Yuqi Z.

Software Engineer II at Moloco | Self Motivated & Enthusiastic Engineer

San Mateo, California, United States

About

5+ years of experience in software engineering ๐Ÿ‘จ๐Ÿผโ€๐Ÿ’ป ๐‹๐š๐ง๐ ๐ฎ๐š๐ ๐ž: JavaScript, TypeScript, Java, Python, Go ๐…๐ซ๐š๐ฆ๐ž๐ฐ๐จ๐ซ๐ค๐ฌ, ๐“๐จ๐จ๐ฅ๐ฌ, & ๐“๐ž๐œ๐ก๐ง๐จ๐ฅ๐จ๐ ๐ข๐ž๐ฌ: React, Next.js, Node, Express.js, Spring, Flask, FastAPI, Gin, RESTful API, GraphQL, gRPC, WebSocket, Kafka, Spark, Airflow ๐‚๐ˆ/๐‚๐ƒ: Github Action, Jenkin ๐‚๐จ๐ง๐ญ๐š๐ข๐ง๐ž๐ซ๐ข๐ณ๐š๐ญ๐ข๐จ๐ง: Docker, Kubernetes ๐‚๐ฅ๐จ๐ฎ๐๐ฌ: AWS, GCP ๐ƒ๐š๐ญ๐š: Cassandra, MongoDB, PostgreSQL, MySQL, BigQuery, BigTable, Firestore, DynamoDB, GCS, S3, Redis ๐Š๐ž๐ฒ ๐€๐œ๐ก๐ข๐ž๐ฏ๐ž๐ฆ๐ž๐ง๐ญ๐ฌ: - Successfully developed and migrated PayPal Help Center from CSR to SSR, improving SEO, reducing errors, and achieving cost savings over 5 million dollars. - Engineered the Venmo Chatbot, integrating with GCP and implementing backend communications via REST APIs and gRPC. - Developed Texas transportation projects application and built data pipeline using Spark and Kafka to support machine learning services. ๐€๐๐๐ข๐ญ๐ข๐จ๐ง๐š๐ฅ ๐„๐ฑ๐ฉ๐ž๐ซ๐ข๐ž๐ง๐œ๐ž: - 2 years in data analytics and machine learning. - Enthusiastic about new AI technologies. Always eager to learn new things. Stay hungry. Stay foolish. Connect with me at [email protected] or on LinkedIn.

Experience

  • Software Engineer II at Moloco
    Aug 2024 - Present ยท 2 yrs

  • PayPal ()
    • Full Stack Engineer
      Jan 2022 - May 2024 ยท 2 yrs 5 mos

      โ€ข Developed Help Center using React.js, Node.js, Next.js, and Java, following agile methodologies and best practices. โ€ข Co-led the migration of the Help Center from Client-Side Rendering to Server-Side Rendering, resulting in: - 50% average increase in SEO impressions, clicks, and keyword rankings globally. - 27.5% reduction in non-US traffic to US FAQs, decreasing from 40% to 29%. - 85% year-over-year decrease in page errors and 37% improvement in page performance. โ€ข Led PayPal 1099K Tax project (2022 โ€“ 2023), collaborating with teams in the US, UK, and India, resulting in the release of Help Center Tax Holds widgets in Jan 2023. โ€ข Engaged in PayPal Search Generative AI project, integrated PayPal AI API using SSE (server-sent events) to handle real-time streaming data. โ€ข Integrated PayPal CMS (Content management system) into Help Center article service using GraphQL and REST APIs. โ€ข Implemented Kafka to broadcast recommended articles from CMS and saved in the web server cache. โ€ข Developed Help Center article service APIs and published them to PayPal Platform-as-a-Service. โ€ข Implemented PayPal FPTI (First Party Tracking ID) Analytics module to track user events, assisting in data analytics and defects troubleshooting. โ€ข Created dashboards in Looker and Splunk to monitor users and APIs events, enabling proactive monitoring and faster issue detection. โ€ข Implemented Unit Tests using Jest and Functional Tests using Cypress for new components. Increased UT over 95% and FT over 90%. โ€ข Set up CI/CD pipelines in Jenkins and deployed the Help Center web application using Kubernetes, streamlining deployment processes and ensuring scalability and high availability.

    • Back End Developer
      Aug 2021 - Jan 2022 ยท 6 mos

      โ€ข Developed Venmo AI Chatbot service in Java. โ€ข Designed and implemented a conversational interface with Google Dialog-flow, enhancing user interaction and satisfaction. โ€ข Integrated Google Dialog-flow into the Venmo Chatbot service using Google Cloud Functions, ensuring seamless communication and data processing. โ€ข Leveraged PayPal Platform-as-a-Service to retrieve data from various services through REST APIs and gRPC.

  • Full Stack Engineer at Texas Department of Transportation
    Jul 2020 - Aug 2021 ยท 1 yr 2 mos

    โ€ข Developed a transportation projects application using Angular, Spring framework, and Oracle DB, streamlining project management and data processing. โ€ข Built a data pipeline to extract data from multiple files, transform it into JSON format, and load it into Kafka message queues. โ€ข Integrated Red Hat Process Automation Manager and DocuSign for business process automation and rule management. โ€ข Utilized RxJS and ag-Grid to handle API requests and display data in tables, improving data visualization and user interaction.

  • Full Stack Engineer at ITLIZE
    Jan 2020 - Jul 2020 ยท 7 mos

    โ€ข Developed an internal admin platform using React and Spring framework under a microservices architecture, improving system scalability and maintainability. โ€ข Broadcasted admin updates among microservices using RabbitMQ, ensuring real-time communication and data consistency. โ€ข Implemented Spring Security for user authentication and authorization, enhancing the platform's security and compliance. โ€ข Utilized Redux to manage state and data flow, reducing application complexity and improving performance. โ€ข Developed REST APIs with Flask and Spring framework to facilitate seamless data exchange between services. โ€ข Deployed applications on AWS, leveraging cloud services to ensure high availability and scalability.