• Engineering owner of TigerGraph query language (GSQL) in charge of the build pipeline, query interpreter, data loader, infrastructure, and security vulnerabilities managing all relevant works end to end, from knowledge sharing and workload balancing to comprehensive design and code review, or self-driving.

• Designed and managed the development of the new data streaming workflow bringing 50% setup reduction and fine-grained monitoring API to provide a streamlined and user-friendly data ingestion experience (Java, C++).

• Automated the various steps of the development cycle, such as branch-aware submodule pulling, early CVE detection, and LOC analysis, to aim for higher engineering productivity and product reliability.

• Led the development of cross-region metadata replication to provide a disaster recovery option for higher system reliability (Java, C++).

• Designed and implemented the runtime evaluation of graph entities/properties (dynamic querying) to make GSQL more versatile with the capability of parameterization (Java, C++).

• Implemented error reporting mechanism of the pattern matching query compilation (query transformation) to aim for the next generation GSQL syntax (Java).

• Migrated existing Java project into Gradle by rewriting the whole project build pipeline to bring higher productivity to the team with better dependency management and 5x faster build performance.

• Contributed to in-depth benchmarking of TigerGraph against LDBC Social Network Benchmark as the original author of benchmark queries in GSQL.

Implemented management systems for several organizations, including the advertising management system for J mediacomm, JoongAng Ilbo.

Implemented management systems for multiple organizations, including the online reservation system for Big-O Show, EXPO 2012 YEOSU KOREA Foundation.