David Xu
Software Developer & Digital Transformation Associate
Based in Amsterdam, Netherlands. Welcome to my personal portfolio/blog where I share and showcase projects I've been working on. This is a casual space for me to document my journey as a junior developer. Currently I am working on expanding my skills in full-stack development and exploring opportunities in tech. I have a active travel planning app project which I am documenting on the blog section.
Feel free to explore my work experience and projects below! This portfolio showcases my journey as a software developer, highlighting key projects and professional experiences that have shaped my skills in digital transformation and software development.
Work Experience
Developer | Founder
Travel Buddy • October 2025 - Current
Currently solo developing an all in one travel planning application, main focus is to give the user a stress planning experience for trip while also experiencing the local culture.
Established the core architecture and implemented key features for the application.
Planned the features user stories and breaking it into smaller tasks for easier implementation.
Documented the development in the blog on my personal website to share the journey and learnings.
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Software Developer | Solutions Engineer
European Medicines Agency • October 2023 - June 2025
Designed and implemented an in-house document translation platform, reducing translation turnaround time from days to minutes and saving 120k euros annually in administrative costs.
Developed a pharmaceutical phonetic calculation algorithm calculation enable it to be quantified for comparison across other pharmaceutical names, improving accuracy in internal workflows and reduced the manual labor up to 90%.
Created a dashboard using RShiny with Posit enable it to be quantified for comparison across other pharmaceutical names, improving accuracy in internal workflows.
Managed and maintained a MS Power Automate tool for files automation checking speeding the process by 66%.
Established standardized documentation practices in Atlassian Confluence, improving team collaboration and project tracking across multiple digital transformation initiatives.
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Co-Founder
dVox • June 2021 – June 2022
Co-founded and developed a decentralized micro-blogging application, called dVox, on Ethereum open-source blockchain utilizing, the smart contract technology, with at its peak of 40 users at once.
Implemented and designed the UI/UX for the mobile application for both iOS and Android.
Integrated the Google firebase as the user management and security.
Co-planned and launched the marketing along with designing the application's trailer video.
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Software Engineer Intern
8by8 • June 2021 – August 2021
Contributed to pre-launch testing for the mobile MVP, identifying and documenting 5 critical issues that improved release stability and reduced post-launch bugs.
Implemented front-end improvements based on user feedback, leading to a more seamless user-friendly experience.
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Digital transformation Intern
Tufts University of Medicine • January 2021 – June 2021
Developed marketing solutions for Dr. David Lee to showcase and promote his research focus on cirrhosis and introduce the research team to attract more funding, public interest and raise general awareness.
Created a plagiarism checking tool for the research team, comparing to the previous publications. This sped up the teams efficiency by 80%.
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Projects
Travel Buddy
An all-in-one travel planning app focused on giving users a stress-free planning experience while connecting them with local culture and unique experiences.
dVox
A decentralized micro-blogging application built on the Ethereum blockchain, allowing users to own their content through smart contract technology.
Document Translation Platform
An in-house translation platform for the European Medicines Agency, reducing translation turnaround from days to minutes and saving 120k€ annually.