Seunghoon Baik

WORK HISTORY

EDUCATION

ABOUT SEUNGHOON BAIK

Samsung SDSA, New Jersey, US • 2020-Software EngineerAs a software engineer, design, develop, and maintain systems by full lifecycle software development. Getting user requirements, defining system functionality, writing code in Java, Python, testing in AWS staging environments, and deploying to AWS production environments.• Resolved ticket number duplication issue ( cases/year across 8 externalapplications) by analyzing source code and identifying short Redis lockexpiration as the root cause; extended lock duration to ensure atomicity,resulting in 0 duplication cases after the fix.• Investigated and resolved performance degradation in API Gateway afterconnector model upgrade by implementing response time logging and loganalysis; collaborated with connector team to apply a patch, improving averageresponse time from 12s to 4s.• Resolved critical Linux server storage issue by identifying oversized Jenkinsbuild logs ( 40GB per job) and implementing log rotation policy, reducingstorage utilization from 95% to under 50%.PORTERS Corporation, Tokyo, Japan • 20••••19Provide software as a service (SaaS) HR-Business Cloud system for recruitment agencies to manage a job, candidate, interview, report.Developed and maintained the Cloud Services using Agile/Scrum methodology.• Developed, maintained, tested, and deployed applications using Java, SpringBoot, Docker, and AWS (EC2, CloudFormation, S3, CloudWatch, etc.), achievingbi-weekly deployments (2+ releases per month) through automation.• Led the development and management of import/export functions betweeninternal applications and external websites, achieving 50% improvement in dataprocessing speed.• Collaborated with team members to create development plans and assignedtasks using Agile/Scrum, successfully leading a 4-member team with over 90%sprint goal achievement rate- Languages: Python, Java- Web: JavaScript, HTML, CSS, JSP- Web Services: RESTful- Web and Application Servers: Tomcat- Frameworks: Spring boot, JPA, Hibernate- Databases: MySQL, PostgreSQL- Design Patterns: Singleton, Factory, Builder, Strategy- SDLC: Agile-Scrum- Tools: IntelliJ IDEA, Eclipse STS, VS Code, Git, Maven, Jenkins, Star UML, Postman, Docker- Platforms: Linux, AWS (EC2, S3, CloudFormation, CloudWatch, Elastic Load Balancing, CodePipeline)- Big Data: Hadoop, SparkEnglish, Japanese, Korean