Career Profile
Hello! I’m passionate about privacy-preserving data sharing and solving real-world optimization problems such as in distributed systems or ML systems. I’m currently pursuing a Master’s degree in Information Technology at Carnegie Mellon University, and I’m looking for a full-time software engineer position starting in December 2023.
Experiences
- Collaborating with Professor Fanti to evaluate deep generative models for time-series data generation and long-range forecasting
- Built AWS-based Microservice Architecture with Kubernetes(k8s) and enabled Infra as Code(IaC) by Terraform
- Designed and implemented active-passive multi-region infrastructure for the reliability of large-scale cloud services
- Designed and built a web dashboard for developers to manage isolated k8s clusters based on React/Backstage
- Designed and developed RESTful backend services using PostgreSQL, AWS DynamoDB, Golang, and Typescript
- Earned Certified Kubernetes Administrator(CKA) and operated AWS EKS clusters for cloud-based applications
- Drove a slashing project from design to implementation to mitigate Nothing-At-Stake attack in Proof-of-Stake systems, and released it to Mainnet; thereby enhanced the consensus security of open sourced IoTeX blockchain
- Improved the performance of log searching API by introducing bloom filter indexer for a long range query
- Developed smart contracts to enable a transaction privacy in blockchain using zkSNARKs and token economy, so-called cyclone protocol and managed the product from frontend to backend, leading to production
- Implemented and published an academic paper regarding an extensible and modular PoS staking architecture in IoTeX blockchain
Projects
Usable Privacy Enhancing Technologies (PETs); Differential Privacy
- Conducted a study evaluating the usability of randomized respone technique for privacy-preserving sensitive data sharing; Accepted at SOUPS poster/workshop 2023
Asynchronous Federated Learning with DAG-based Blockchain in Edge Computing
- Led a 5-person team at Seoul National University blockchain academy, authoring a survey paper on integrating asynchronous federated learning (FL) and directed acyclic graph-based blockchain for edge computing
The Impact of Blockchain on Open Banking System
- Surveyed the impact of blockchain on financial industry in terms of payment data utilization, and won a Grand Prize in the 8th Fin-Tech Idea and Paper Competition at Korea Internet Security Agency (KISA)
Open Source Contributions
IoTeX Blockchain Core Protocol Development
- Contributed to the development of IoTeX blockchain core protocol, including the implementation of slashing, staking and consensus in GoLang
Transaction Privacy Protocol in Blockchain using zkSNARKs
- Contributed to the smart contract development of transaction privacy protocol in blockchain using zkSNARKs and token economy, so-called cyclone protocol
Publications
Expert Systems with Applications, 2023
IEEE The 2nd International Conference on Blockchain Computing and Applications (2020)