JavaScript, Python, React, Vue, Node.js, Express.js, Django, MongoDB

Chelsea Liu

Ħ +1-347-***-**** ć ******@***.*** ] Linkedin.com/in/chelsealiu0822 a github.com/ChelseaLiu0822 Education

New York University Sep. 2023 - May 2025

Master of Informatics in Applied Urban Science and Informatics NYC, NY, USA Beijing Forestry University Sep. 2019 - Jun. 2023

Bachelor of Management in Information Management and Information System Beijing, China Skills

Programming Languages: JavaScript, Python, Java, C#, R, Visual Base. Frameworks: React, Vue, Node.js, Express.js, Django, Selenium, PySpark, Element UI, Scrapy, Playwright. Databases: MySQL, MS SQL, HBase, Hive, MongoDB.

Tools: Git, Trello, Figma, Axure, Eslint, Postman, Docker. Work Experience

Software Engineer Jun. 2025 - now

Grove Collective Foundation New York, USA

• Developed responsive and accessible front-end interfaces using React, TypeScript, and Tailwind CSS, supporting interactive educational content delivery.

• Designed and integrated RESTful APIs with Express.js and Node.js, enabling seamless front-end and back-end communication.

• Built real-time data visualization components using Chart.js and React Hooks, facilitating user engagement with community metrics.

• Implemented MongoDB-backed user authentication and authorization workflows with JWT and Express middleware, improving system security.

• Created data scraping framework and data pipeline with Python, and pushed structured content into the MongoDB and PostgreSQL databases for frontend consumption. Software Engineer Dec. 2024 - May. 2025

Dollaride New York, USA

• Developed a financial analysis web platform using React, WordPress, Node.js, and MongoDB to measure the impact of clean energy policies on small businesses, enabling real-time performance monitoring and data visualization.

• Built and managed RESTful APIs to ensure secure and efficient data flow between the frontend and backend services, facilitating seamless user interactions and scalable data integration.

• Created interactive geospatial dashboards using ArcGIS and JavaScript, supporting planning and equity analysis for urban electric vehicle (EV) charging infrastructure.

• Designed and implemented server-side logic with Node.js, integrated with frontend components in React, and de- ployed cloud-native applications using Google Cloud Platform to support high availability and fault tolerance. Software Engineer Jun. 2024 - Dec. 2024

United Nations Geneva, Switzerland

• Contributed to the maintenance and enhancement of the Humanitarian Programme Cycle (HPC) information systems used across UN operations to support coordinated humanitarian planning.

• Developed and debugged user interface components using JavaScript and React, ensuring cross-browser compati- bility and consistent user experience.

• Assisted in backend maintenance using Express.js, including updates to RESTful API endpoints for improved data accessibility and integration with external systems.

• Participated in QA testing, bug tracking, and documentation to ensure the stability and usability of HPC tools in live environments.

Software Engineer Feb. 2022 - Sep. 2023

Mei Tuan. Beijing, China

• Developed and maintained web-based financial applications using React for the frontend, Node.js and Express for backend services, and MongoDB for database storage.

• Designed and implemented RESTful APIs to enable smooth data exchange between the front-end and backend systems.

• Collaborated with backend engineers to define API requirements and ensure data consistency and system reliability.

• Participated in system architecture discussions, contributed reusable UI components, and helped standardize frontend development practices.

Software Engineer Jun. 2020 - Dec. 2021

Thoughtworks Software Technologies (Beijing) Ltd. Beijing, China

• Developed and maintained financial software using Java and Spring Boot.

• Implemented new features for the Mercedes CMS using React and WeChat Mini Program.

• Collaborated with UI designers and Product Managers to enhance software usability based on client feedback.

• Developed dynamic animations in JavaScript to improve the user experience for Mercedes-Benz digital platforms. Projects

Image Management System for Apple Tree Leaf Disease Sep. 2022 - Jun. 2023

• Led the design and develop of an Image Management System for detecting Apple Tree Leaf Diseases.

• Collaborated with a team of four, iterating on features in every sprint.

• Implemented CNN-based image classification for disease recognition, integrating open-source models via Tensor- Flow.

”Jane Book” book retrieval system Sep. 2022 - Dec. 2022

• Built search model and recommendation model using python+NLP+VSM.

• Optimized recommendation model using hash algorithm and VSM by vector dimensionality reduction. BJFU Tuan Nov. 2022 - Dec. 2022

• Used WXML+WSS+js to build the front-end page of the WeChat applet and built the cloud function.

• Designed and built the database, wrote the back-end code using JS and completed the front-end and back-end con- nection.

Building Materials Trading System Sep. 2021 - Dec. 2021

• Developed a shopping system for building materials using Vue, ElementUI, and Express.js.

• Utilized Baidu Map API to display logistics information.

• Optimized Largest Contentful Paint (LCP) by refactoring legacy components. High-performance distributed RPC based on Spring, Netty, Zookeeper May 2020 - Aug. 2020

• Developed a high-performance, lightweight distributed RPC framework, which used high-performance network communication based on Netty, object management based on Spring and dynamic proxy generation, and imple- mented the creation and monitoring of server nodes based on Zookeeper.

• Based on Netty to perform high-performance network communication, solved short connection problems, built long connections, solved the performance bottleneck of synchronous blocking calls, achieved asynchronous calls, sup- ported heartbeat monitoring mechanism, solved Java native serialization performance bottlenecks, and implemented JSON-based sequences. Used dynamic proxy to process requests solved process requests, solved process commu- nication problems, and solved TCP/IP unpacking and sticking problems. Used BeanPostProcessor mechanism and ApplicationListener mechanism to implement client self-starting and annotation-based service invocation, and de- veloped a service registry based on ZooKeeper. Provided client service discovery function, service node monitoring, and dynamic management function, built the annotation-based zero-configuration framework.

Contact this candidate