Albert Xu

I am Albert Xu, a full-stack software engineer with experience in backend, web, and systems development. I hold a Master’s degree in Computer Science from the University of California, San Diego (GPA: 3.88/4.0) and a Bachelor’s degree in Computer Science from the University of Liverpool (GPA: 3.93/4.0, top 3%).

Currently, I work at 4Pexonic Inc. in San Diego as a Back-end Engineer, where I developed an academic impact analysis platform tracking citation patterns and research influence using Node.js, MongoDB, and Next.js with Docker containerization. I built two-tier caching with in-process LRU and Redis for bibliometric queries, reducing response times by 40% for complex research trend analysis. I also integrated gRPC microservices for data processing pipelines and implemented secure authentication with bcrypt/session management, configured Nginx SSL to protect academic publication data and researcher information.

Previously, I worked as a Research Engineer at the UCSD Halıcıoğlu Data Science Institute (Oct 2023 - Sep 2024), where I focused on data quality and fairness in machine learning systems. I built a modular “Injector” pipeline with beam-search pruning and Optuna Bayesian tuning, raising downstream model accuracy by 10% and fairness by 15%. I co-authored “Stress-Testing ML Pipelines with Adversarial Data Corruption” (VLDB 2025), introducing the first adversarial benchmark for data-quality robustness. I also ran comprehensive benchmarks on missing-value, selection-bias, and outlier scenarios while optimizing Z-score standardization for skewed data—boosting attack coverage by 30%.

Earlier roles include Web Developer at UCSD’s ECE Department, where I developed the ITA Workshop website with video/document upload functionality using Django and React, serving 1000+ users with Redis server-side caching and optimized SQL indexes for improved page load performance.

My tech stack includes Python, Java, Go, SQL, JavaScript, Django, React, Node.js, Docker, AWS, and gRPC. I’m passionate about delivering robust, high-performance systems and writing clean, maintainable code.

Feel free to connect with me on LinkedIn or explore my GitHub.

You can reach me at the following:

Phone: 858-568-6771
Email: albertxu1010@gmail.com
Location: San Diego, CA