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JunWang222/README.md

Jun (Jenny) Wang 👋

MSCS @ NYU Courant | Data Infrastructure | Distributed Systems | Backend Engineering

About Me

  • 🎓 M.S. in Computer Science @ NYU Courant (GPA: 3.89/4.0), graduating Dec 2026
  • 🚀 Google Summer of Code Contributor @ Apache Software Foundation (Apache Wayang)
  • 💻 Former Software Engineer Intern @ NetEase
  • 👩‍🏫 Course Assistant for Big Data Application Development and Fundamental Algorithms @ NYU
  • 🔍 Interested in data-intensive systems, distributed computing, backend infrastructure, and performance optimization

Experience

Apache Software Foundation — Google Summer of Code

  • Extended Apache Wayang with SQL execution support for Trino, Presto, BigQuery, and DuckDB
  • Built platform plugins, operator mappings, and execution operators for core relational operations
  • Developed 35+ live-engine integration tests across SQL pushdown, joins, aggregation, sorting, sinks, and Parquet reads
  • Built cost-profiling and calibration workflows for optimizer-driven platform selection

NetEase — Software Engineer Intern

  • Built backend infrastructure for a robotics simulation platform
  • Developed a unified HTTP API client layer replacing direct MySQL access across 30+ services
  • Built a YAML-driven API testing framework, reducing per-case authoring effort by ~95%
  • Improved FastAPI / SQLAlchemy session handling for long-running background tasks

Selected Projects

GPU Hash Table Optimization

  • Designed high-concurrency CUDA/C++ kernels for a fixed-size open-addressing hash table
  • Supported workloads with 100M+ keys
  • Improved insert/delete latency by 42%
  • Achieved up to 10× higher throughput with adaptive search strategies

NYC Taxi Demand Forecasting

  • Built a large-scale Spark/HDFS pipeline over 60M+ records
  • Developed feature engineering and forecasting workflows for urban demand prediction

Tech Stack

Languages: Java · Python · C · C++ · SQL
Data & Distributed Systems: Spark · Kafka · HDFS · Apache Wayang
Backend & Infrastructure: FastAPI · Flask · Docker · Kubernetes · REST APIs
Databases: MySQL · PostgreSQL · BigQuery · Snowflake
Systems: CUDA · Linux · CI/CD · Git

Interests

I’m particularly interested in building scalable data platforms, distributed systems, backend infrastructure, and high-performance software.

Pinned Loading

  1. wayang wayang Public

    Forked from apache/wayang

    Apache Wayang is the first cross-platform data processing system.

    Java

  2. JabRef/jabref JabRef/jabref Public

    Desktop app for managing BibTeX and BibLaTeX (.bib) libraries

    Java 4.8k 3.7k

  3. debezium debezium Public

    Forked from debezium/debezium

    Change data capture for a variety of databases. Please log issues at https://github.com/debezium/dbz/issues.

    Java

  4. Efficient-GPU-Hashing-with-Preallocated-Open-Addressing-and-Kernel-Level-Tuning Efficient-GPU-Hashing-with-Preallocated-Open-Addressing-and-Kernel-Level-Tuning Public

    Cuda