Eric Peng Email & Phone Number

New York City Metropolitan Area

New York, United States

• Worked on internal team tooling for engineers and product teams, governing our schema across all applications. Ensured the health of our schema and data structures through maintaining and implementing team tooling features such as the code review process, allowing assigned reviewers to comment, approve, request changes, and reject each entry before integrating new changes into our CI/CD pipeline• Implemented a form validation feature to ensure form inputs aligned specifically with given schema definition, resulting in increased accuracy in schema modifications and reduced human error by 80%• Enhanced the schema modification review page UI by implementing component-driven key change display, vividly rendering modified values, and significantly streamlining the schema modification review process, reducing time to merge by over 24 hours• Adopted Typescript to leverage static typing for improved maintainability and increased code base scalability• Implemented Jest and React Testing Library for unit and integration testing, ensuring component functionality and predictable state mutations, and improving test coverage by 80% by integrating Sonarqube• Incorporated RTK Query into Redux for more efficient and simplified data fetching, improving the global state management environment• Employed Datadog KPIs to monitor the performance and well-being of fetch requests and user activity tracking• Utilized Next.js to pre-render application at build time for efficient render and simplify routing throughout the application• Implement, populate, and query a graph database in Neo4j that contains over 800 schema definitions and implement GraphQL query for frontend data fetching

• Worked on the development of an Intelligence Platform for Clinical Trials that allowed Sponsors and CROs(Contract Research Organization) to monitor and reduce the potential risk of drug studies• Collaborated on the development of a React and NodeJS based (no-code) platform to generates Clinical Trial Analytic Dashboards via configuration.• Contributed to a number of features enhancements and bug fixes of existing analytics dashboard products.• Leveraged Visx and Recharts to build chart component and improve visualization of various metrics, milestones, and overall trial progress.• Participated in design discussions with Data Engineers to define data contracts and APIs needed to connect backend Snowflake data stores with frontend visualizations.• Identify and resolve performance and UI/UX issues, troubleshoot problems, and improve user experience.• Implemented MobX to extend state management within application, establishing automatic tracking of state updates, and simplify overall state management architecture.• Worked in a highly-cross functional agile scrum team to handle platform component development tasks, bug fixes and spike investigations.

• Worked on an open-source migration assistance tool that enables developers to automatically generate GraphQL schemas from imported PostgreSQL metadata, thereby avoiding potential errors during the creation of GraphQL schemas• Integrated UI to utilize an algorithm that exploited SQL commands in order to gather metadata on any relational database and translate, rendering automated GraphQL schemas instantaneously in exportable format.• Provided a secure authentication process by enforcing OAuth 2.0 using PassportJS to provide end-users with the option to use their GitHub account details while automatically persisting sessions, tokenizing requests and securely protecting personal information.• Implemented Next.js’s lifecycle methods to employ server-side rendering in React to pre-populate pages with data and optimize user experience by allowing fast data fetching, page routing, and real-time data management.• Employed Test Driven Development (TDD) using Jest and Testing Library to secure accurate component execution and coherent route handling across the application while preventing potential error from future implementation.• Reduced React component rendering time by a factor of 5 by utilizing memoization, debouncing, and restructuring state distribution through Context API and Hooks.

• Designed and employed NoSQL database to enable flexible data storage, fast retrieval of survey and user data, and to allow for future horizontal scaling of the application.• Implemented React Hooks to enable the use of lifecycle methods and state management within functional components while also applying Redux’s observer pattern and unidirectional data flow to propagate predictable state data and React components.• Improved upon existing REST endpoints and middleware using Express in Node.js in order to execute functionality for group chats by efficiently verifying user login and group chat status while gathering group chat metadata using document data model, facilitating real-time interaction and communication between users.

• Efficiently handled multiple concurrent requests to a variety of endpoints in middleware patterns while verifying user login status and updating frontend data before parsing sensitive user data.• Implemented container pattern in React.js to create single-page applications with reusable components, maximizing maintainability and modularity by separating stateful and presentational components and enforcing one-way data flow.• Configured distinct “rooms” that facilitated real-time interaction and communication between users that were synced to a shared timer, using the quick updates of WebSocket to ensure users shared the same experience.• Constructed a custom webpack configuration file to reduce browser loading time through bundling minification and uglification; enable hot module replacement to improve development efficiency by updating modules at runtime without full refreshing.

• Integrated React Context API and hooks (useContext, createContext, useReducer & Provider hook) to manage state globally to eliminating the need for prop-drilling.• Leveraged Material-UI framework and styled-components to style the application by customizing the prebuilt design components for a responsive and predictable user experience while following Material Design that seamlessly integrates into React.