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Hi, I'm Donghyun Lee, a Computer Programming Analyst graduate with hands-on software development experience and a background in quality assurance. I enjoy building efficient applications and automating processes using technologies like React, Node.js, and C#. Writing clean, simple code and solving problems are what I’m passionate about. I have worked in various roles where I honed my analytical skills, from improving quiz generation algorithms to developing custom ordering systems. I bring a strong work ethic, a collaborative spirit, and a commitment to delivering high-quality software solutions.…Hi, I'm Donghyun Lee, a Computer Programming Analyst graduate with hands-on software development experience and a background in quality assurance. I enjoy building efficient applications and automating processes using technologies like React, Node.js, and C#. Writing clean, simple code and solving problems are what I’m passionate about. I have worked in various roles where I honed my analytical skills, from improving quiz generation algorithms to developing custom ordering systems. I bring a strong work ethic, a collaborative spirit, and a commitment to delivering high-quality software solutions.

Donghyun Lee (Daniel)

Full Stack Developer, QA Engineer, Developer, +1

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Hi, I'm Donghyun Lee, a Computer Programming Analyst graduate with hands-on software development experience and a background in quality assurance. I enjoy building efficient applications and automating processes using technologies like React, Node.js, and C#. Writing clean, simple code and solving problems are what I’m passionate about. I have worked in various roles where I honed my analytical skills, from improving quiz generation algorithms to developing custom ordering systems. I bring a strong work ethic, a collaborative spirit, and a commitment to delivering high-quality software solutions.…Hi, I'm Donghyun Lee, a Computer Programming Analyst graduate with hands-on software development experience and a background in quality assurance. I enjoy building efficient applications and automating processes using technologies like React, Node.js, and C#. Writing clean, simple code and solving problems are what I’m passionate about. I have worked in various roles where I honed my analytical skills, from improving quiz generation algorithms to developing custom ordering systems. I bring a strong work ethic, a collaborative spirit, and a commitment to delivering high-quality software solutions.

Available to hire

Hi, I’m Donghyun Lee, a Computer Programming Analyst graduate with hands-on software development experience and a background in quality assurance. I enjoy building efficient applications and automating processes using technologies like React, Node.js, and C#. Writing clean, simple code and solving problems are what I’m passionate about.

I have worked in various roles where I honed my analytical skills, from improving quiz generation algorithms to developing custom ordering systems. I bring a strong work ethic, a collaborative spirit, and a commitment to delivering high-quality software solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Advanced

Korean

Advanced

Work Experience

Quality Technician at CS Automotive

May 1, 2023 - Present

Monitored and documented quality metrics, including monthly scrap rates from the facility and suppliers. Conducted inspections and maintained accurate material records. Investigated production issues using analytical approaches similar to debugging software, conducted root cause analysis and implemented corrective actions that improved product quality and reduced defects. Leveraged data analysis skills to identify patterns in recurring defects, leading to long-term process improvements and fewer quality escapes. Applied structured problem-solving techniques such as 5 Whys to resolve complex quality issues.

Software Developer (Internship) at South Korea

August 31, 2022 - July 9, 2025

Redesigned a C# quiz-generation algorithm to eliminate duplicate and mismatched questions based on student-submitted reading materials, resulting in a 100% reduction in quiz errors. Improved code maintainability by implementing thorough documentation and clear in-line comments, following software development best practices. Refined answer option algorithm in a student quiz app by dynamically generating phonetically or visually similar distractors, minimizing guesswork and improving assessment accuracy.

Freelance Developer at Miso Sushi

December 31, 2022 - July 9, 2025

Developed and implemented a custom ordering system using Google Docs and Google APIs, automating a 4-hour daily manual process, reducing order errors, and enabling real-time order tracking for customers. Created a data management solution to organize business metrics including expenditures, profits, and customer information, enabling data-driven decision making. Designed and implemented a lead management system that captured and organized inbound leads from multiple digital channels, resulting in a 30% increase in sales-qualified leads month over month.

Quality Technician at CS Automotive

May 1, 2023 - Present

Monitored and documented quality metrics including monthly scrap rates from facility and suppliers, conducted inspections, and maintained accurate material records. Investigated production issues using analytical approaches similar to debugging software, performing root cause analysis and implementing corrective actions that improved product quality and reduced defects. Applied data analysis skills to identify patterns in recurring defects leading to long-term process improvements and fewer quality escapes. Utilized structured problem-solving techniques such as 5 Whys to resolve complex quality issues.

Software Developer (Internship) at South Korea

August 31, 2022 - July 9, 2025

Redesigned a C# quiz-generation algorithm eliminating duplicate and mismatched questions, resulting in a 100% reduction in quiz errors. Improved code maintainability by implementing thorough documentation and clear inline comments following best practices. Refined answer option algorithm by dynamically generating phonetically or visually similar distractors, minimizing guesswork and improving assessment accuracy.

Freelance Developer at Miso Sushi

December 31, 2022 - July 9, 2025

Developed and implemented a custom ordering system using Google Docs and Google APIs that automated a 4-hour daily manual process, reduced order errors, and enabled real-time order tracking for customers. Created a data management solution to organize business metrics including expenditures, profits, and customer information enabling data-driven decision making. Designed and implemented a lead management system that organized inbound leads from multiple digital channels, which increased sales-qualified leads by 30% month over month.