# Tangtai Chen

> Fullstack Software Engineer | TypeScript, React | Node.js, RestfulAPI | Web and Mobile Development

Location: San Francisco, California, United States
Profile: https://flows.cv/tangtai

Fullstack Engineer with 5+ years of experience in developing user-centric web and mobile applications. Strongly committed to delivering high-quality software solutions, with extensive experience in designing and implementing front-end interfaces, backend services, and RESTful APIs. Adept at managing the full software development lifecycle, from conception to deployment, ensuring seamless integration and exceptional user experiences across mobile, web, and backend platforms.

## Work Experience
### Full Stack Engineer @ Sepsis Scout
Jan 2019 – Jan 2024 | San Francisco Bay Area
- Developed a multi-platform React Native mobile application for data acquisition, enabling the collection of data that powered the creation of a high-performance ML sepsis detection algorithm.
- Created a real-time React.js dashboard to monitor patient status, facilitating data-driven decisions and enhancing the efficiency of medical trials.
- Built RESTful API services with 100% unit test coverage, ensuring reliable data and seamless business logic integration across platforms.
- Built a full-stack web application with Next.js, funded by NIH, to help medical professionals visualize and understand the inner workings of machine learning models, and collect feedback on model explainability.
- Established a CI/CD pipeline using Fastlane and GitHub Actions, cutting software deployment time by 50% for both mobile and web applications.
- Designed a PostgreSQL database for time-series data, hosted on Google Cloud, to enhance data management across development stages.
- Implemented a health monitoring system using Sentry.io, significantly reducing production downtime through rapid error detection and tracing.
- Integrated an analytics funnel in front-end applications, increasing user engagement by 25% through data-driven optimizations.
- Conducted a wearable device benchmark using statistical methods in Python, directly informing device selection and protocol development.
- Engineered native mobile apps for Android and iOS for wearable devices, ensuring reliable data collection using various protocols.

### Design Engineer @ Patchd Medical
Jan 2017 – Jan 2019 | Sydney, Australia to San francisco, USA
- Designed mechanical systems for wearable IoT devices, improving user experiences through iterative feedback loops.
- Sourced materials and vendors for wearable IoT devices, ensuring compliance with medical standards and enhancing product safety.
- Created UI wireframes and prototypes, identifying key features through user trials,  optimizing user experience.
- Built a mobile app for wearable devices, facilitating seamless Bluetooth data reception and local storage in collaboration with embedded engineers.
- Designed and built web applications, visualizing user feedback and collected data, informing product iteration decision making.
- Collected and tagged data with wearable devices, trained an LSTM neural network activity classifier, and demonstrated results on a web application.

### Internship at production support team @ Faiveley Transport
Jan 2015 – Jan 2016 | Unit 1, 175 James Ruse Drive, Rosehill 2142
• Capture manufacturing and testing processes in the workshop, and create working instructions via VKS, aiming to improve those processes.
 • Design of minor components to improve the production process, with CAD and 3D-printing.
 • Detailed documentation of a maintenance process, and analysis of the results to suggest improvements and new production line layout.


## Education
### Bachelor’s Degree in Mechanical Engineering
The University of Queensland
Jan 2012 – Jan 2016


## Contact & Social
- LinkedIn: https://linkedin.com/in/tangtai-chen
- GitHub: https://github.com/tangtai

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Source: https://flows.cv/tangtai
JSON Resume: https://flows.cv/tangtai/resume.json
Last updated: 2026-03-20