Dongsung Kim Email and Phone Number

BZNAV: Aggregation-based fintech service for SMEs and CPAs.Optimized the codebase to efficiently handle 800M+ database records.Troubleshot and developed features on the underlying legacy system.Assessed and implemented privacy requirements.Backend using NestJS/Node.js, Flask/Python, and Amazon Aurora.Server architecture and DevOps on Datadog, Bitbucket, CircleCI, and AWS.Reverse-engineered login protocols to circumvent anti-bot efforts.Discovered and patched… Show more BZNAV: Aggregation-based fintech service for SMEs and CPAs.Optimized the codebase to efficiently handle 800M+ database records.Troubleshot and developed features on the underlying legacy system.Assessed and implemented privacy requirements.Backend using NestJS/Node.js, Flask/Python, and Amazon Aurora.Server architecture and DevOps on Datadog, Bitbucket, CircleCI, and AWS.Reverse-engineered login protocols to circumvent anti-bot efforts.Discovered and patched security vulnerabilities. Show less

Ridibooks: South Korea’s largest e-book retailer.As a software engineer: Developed content delivery pipeline spanning from publishers to end users.Troubleshot and developed features on the underlying legacy system.Frontend using React, ECMAScript/JavaScript, and jQuery.Backend using Docker, PHP/Silex/Lumen, and MariaDB.Server architecture and DevOps on Amazon Web Services.As a security advisor: Participated in administering RIDI Bug Bounty… Show more Ridibooks: South Korea’s largest e-book retailer.As a software engineer: Developed content delivery pipeline spanning from publishers to end users.Troubleshot and developed features on the underlying legacy system.Frontend using React, ECMAScript/JavaScript, and jQuery.Backend using Docker, PHP/Silex/Lumen, and MariaDB.Server architecture and DevOps on Amazon Web Services.As a security advisor: Participated in administering RIDI Bug Bounty program.Triaged and responded to vulnerability submissions.Discovered security vulnerabilities in the internal services. Show less

Orbi, Orbi Class: Top 30 South Korean education website.Frontend using React, less, Angular.js, and jQuery.Backend using Python/Flask/Django, Node.js, and MySQL.Server architecture and DevOps on Amazon Web Services.Maintained the infrastructure to efficiently handle ~3M/day page views.Troubleshot and developed features on the underlying legacy system.Discovered and resolved several security vulnerabilities.

See also: Projects.Participated in various security evaluation projects on operating systems and network protocols supervised by: the National Security Research Institute; the Korea Institute of Information Security & Cryptology; and the Ministry of Science, ICT and Future Planning.

Shakr: Web-based video editor with designer-crafted templates.Frontend web-based video editor using the company's own framework with jQuery. Backend PHP programming using CodeIgniter for RESTful API implementation.Backend video processing using Python with FFMPEG, and C++ with Intel Quick Sync, OpenCL.GitHub-based code compilation and deployment system.Assisted server architecture on Amazon Web Services.

Developed a prototype iPad app to showcase digitized version of Korean oriental patterns book with a marketplace for its vector images.

Assisted router programming using DD-WRT and OpenWRT.Assisted web programming using PHP.