Open to opportunities

Dohun Kim

@dohunkim

Message

Experienced performance test engineer with deep SDET expertise.

United States

Message

What I'm looking for

I am looking for a role that fosters innovation and allows me to lead performance testing initiatives while collaborating with cross-functional teams to enhance system reliability and efficiency.

I am a performance test engineer with extensive experience in software development engineering in test (SDET) and a proven track record in driving test automation and CI/CD integration across large-scale distributed systems. My expertise includes building robust JMeter frameworks and optimizing system reliability for enterprise applications. I have successfully designed an AI-powered performance testing framework that generates and manages test scripts for various tools, enhancing team efficiency and aligning IT operations with strategic business goals.

Throughout my career, I have provided technical leadership in performance testing for enterprise eCommerce and education platforms, collaborating with cross-functional teams to ensure high-performance backend services. My initiatives have led to significant improvements in system responsiveness and reliability, including a 50% increase in overall system efficiency. I am passionate about mentoring engineers and fostering a collaborative team culture that drives innovation and continuous learning in performance engineering.

Experience

Work history, roles, and key accomplishments

Current

Tech Lead/Software Testing/QA

Current

Scholastic

Feb 2019 - Present (6 years 4 months)

Provided technical leadership in performance testing for enterprise eCommerce and K-12 education platforms, utilizing performance monitoring tools like Prometheus and Grafana. Designed and executed over 1,000 CI/CD-integrated performance tests using JMeter to validate system responsiveness and reliability.

Performance Testing JMeter Prometheus Grafana CI CD AI Driven Diagnostics Data Governance Scalability Mentoring Ecommerce

Tech Lead/Chief Performance Engineer

Kaplan

Nov 2016 - Feb 2019 (2 years 3 months)

Designed and implemented a CI/CD-integrated performance testing framework using Taurus, JMeter, and Jenkins to simulate over 50,000 concurrent users. Developed the Kaplan Realtime Performance (KPR) Dashboard to monitor system KPIs and improve response times by 30%.

Performance Testing CI CD JMeter Jenkins Taurus Data Analytics System Monitoring Mentoring DevOps

Sr. Performance Engineer

Express

Apr 2016 - Nov 2016 (7 months)

Conducted performance testing for Order Management System (OMS) and Retail Management System (RMS), simulating 50,000 concurrent users to validate scalability. Identified and optimized system bottlenecks using AWR, SolarWinds, and New Relic, resulting in a 20% increase in transaction capacity.

Performance Testing RMS JMeter Solarwinds New Relic Optimization CI CD Automated Testing

Sr. Performance Engineer

Ibeta

Mar 2015 - Feb 2016 (11 months)

Spearheaded the design and development of robust JMeter performance testing scripts for high-traffic online education platforms. Diagnosed and resolved complex performance bottlenecks by optimizing database indexing, JVM memory parameters, and application-level caching.

JMeter Performance Testing Load Testing Database Optimization Caching Cross Functional Collaboration Online Education

Director of Engineering

Iasa

Jan 2010 - Nov 2014 (4 years 10 months)

Led enterprise-wide QA and performance testing strategies across global industries, aligning software engineering with business objectives. Directed functional, UAT, and performance testing for a Global Supply Chain Management System, coordinating on/offshore QA teams and SAP data integration.

QA Strategy Performance Testing Software Engineering Leadership Supply Chain Management Automation Team Leadership IT strategy Data Validation Compliance

IT Manager/Integration Architect

CNBC

Nov 2006 - Dec 2009 (3 years 1 month)

Led the full lifecycle design, development, testing, and successful release of the Million Dollar Awarded Online Trading System. Engineered a complex system architecture that integrated real-time stock price data feeds directly from Nasdaq and NYSE.

System Design Performance Testing JMeter Agile Scrum Team Management Risk Management

IT Manager

Samsung SDS

Jan 2000 - Nov 2006 (6 years 10 months)

Led the design, development, release, and maintenance of 23 enterprise-level systems supporting B2C, B2B, B2E, and B2P services for Samsung Electronics North America. Served as a founding member of the Samsung North America eCommerce team, initiating team structure and leading recruitment efforts.

Enterprise IT Ecommerce J2EE IT Governance Team Leadership

Education

Degrees, certifications, and relevant coursework

New Jersey Institute of Technology

Master of Science, Management Information Systems

Pursued a Master of Science in Management Information Systems, focusing on the intersection of business and technology. Gained expertise in managing information systems to support organizational goals.

Chung-Ang University

MBA, International Business

Completed an MBA with a specialization in International Business. Developed a strong understanding of global markets, business strategies, and cross-cultural management.