# Samuel Y. > Staff Software Engineer Location: Washington DC-Baltimore Area, United States Profile: https://flows.cv/samuely With experience in full stack development, I have a passion for technology and a demonstrated ability to develop innovative solutions for a wide range of applications and deliver results. I have experience with JavaScript and Golang. Languages​: ​JavaScript, Golang Frameworks, Libraries, Tools​: ​React.js, Vue.js, Node.js, TypeScript, Docker Databases​: ​MySQL, Postgres Certification​: AWS Solution Architect (Associate) ## Work Experience ### Staff Software Engineer @ Realtor.com Jan 2023 – Present | Washington DC-Baltimore Area ### Senior Software Engineer @ Realtor.com Jan 2021 – Jan 2023 ### Senior Software Engineer @ Capital One Jan 2019 – Jan 2021 | Virginia - Developed and implemented authentication feature in Capital One’s new service platform, built in VueJs and NodeJs, improving feature with enhanced logging and monitoring and improved user experience. - Pioneered Capital One fraud org into the service platform as the individual contributor, by learning the authentication process and contributing to the code base. This enabled the team to get more work and add other fraud features. - Developed and deployed micro services with Docker, Golang, Jenkins, and AWS ECS, automating the process of building, testing, and releasing software, streamlining development process and faster delivery to production. - Implemented and created AWS resources adhering to strict and best practices, heightening security measures on cloud resources and application against cyber threats, ensuring higher confidence in our systems. - Performed bi-annual technical recovery exercise for team’s failover process, redirecting traffic and updating databases to coordinate primary to read-replica switch, ensuring high availability and reliability of team’s services and application. - Maintained and fixed bugs in legacy applications built with AngularJs and Java/Spring Boot, ensuring application is up to date with company’s latest coding standard with zero vulnerabilities and 95% code coverage, while modernizing the application and developing features with React and Golang. This allowed business to continue their work flow as normal while building for the future. ### Software Engineer @ Capital One Jan 2018 – Jan 2019 | Virgina - Designed, developed, and deployed to production from proof of concept web application, built with React and NodeJS in 3 months, streamlining access control process to the data lake, improving the process from weeks to a couple of days. - Mentored TDP (Technology Development Program) associates, overseeing weekly code reviews, setting coding standards, and acting as a technical guide. This allowed members to grow their skills and confidence to take on harder work. - Won “Best All Around Demo” for the application in Capital One’s Demo Day event, bringing more visibility and interest to the application. - Researched and presented new technology like TypeScript, GraphQL, OptimalBits/Bull (Redis-based queue for Node), to improve code quality and processes in our application. ### Software Engineer @ CDNetworks Jan 2017 – Jan 2017 | Gangnam-gu, Seoul, Korea • Developed user-facing features using React.js, Angular.js, jQuery, and JavaScript. • Implemented React.js to legacy code, replacing Angular.js 1x and jQuery. • Held seminar and code review sharing about the pros and cons of Reactjs. • Developed, maintained, and improved large-scale web platform created with Django framework. • Used TDD approach to develop with Jest unit testing. • Refactored code and reviewed other developer's code. ### Frontend Developer @ Tappytoon(태피툰) Jan 2016 – Jan 2017 | Mapo-gu, Seoul, Korea • Led the Front-End development using Laravel framework, JavaScript, and jQuery. • Created new UIs and improved UX of the website, increasing conversion rate by 105%, monthly sales by 50%, and increasing both first-time purchases and repeat purchases in a six months span. • Collaborated closely with the designer, software engineers, and stakeholders to design and build a large-scale web application using JavaScript, PHP, AngularJS. • Active involvement in responsive design solutions, including finding innovative uses of CSS3 and JavaScript to deliver rich interactions at differing screen resolutions. • Brainstormed and refined concepts for projects and improving the user experience. • Researched and conducted user experience tests to improve overall UX. ### Web Developer @ Swizzle Global Jan 2015 – Jan 2016 • Participated as one of the top 12 Asian companies to help IBM Watson help spearhead their expansion to Asia. (Learn more: http://www.getswizzle.com/single-post/2017/01/04/Swizzle-Talks-Augmented-Intelligence-at-IBM-Developer-Connect-2016) • Led a project of redesigning and development of web app, winning government grant of $30,000. • Implemented multi-language functionality to the website. • Brainstormed and initiated a new proposal to CEO to enhance existing web app, which was built with NodeJS, ExpressJS, MongoDB, jQuery. • Enhanced and maintained the UI of other applications using JavaScript, HTML5, CSS, jQuery, Bootstrap, and AJAX. ## Education ### Bachelor of Business Administration - BBA in Finance and Investments Baruch College Jan 2004 ## Contact & Social - LinkedIn: https://linkedin.com/in/samueljyoo --- Source: https://flows.cv/samuely JSON Resume: https://flows.cv/samuely/resume.json Last updated: 2026-03-22