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I am a seasoned full-stack software engineer with 15+ years of experience designing and building backend systems, REST APIs, and integration services. I am proficient in Java (Spring MVC / Spring Boot), C++, and comfortable with React for front-end development. I have a track record of delivering reliable APIs, microservices, and cloud-based architectures within Agile teams, with a strong focus on user authentication, data security, and system reliability. I thrive in build-and-run environments, collaborating with developers, testers, and operations to monitor, analyze incidents, and drive continuous improvement of production services. I am committed to applying best practices in DevOps, CI/CD, and monitoring to ensure scalable and secure systems.…I am a seasoned full-stack software engineer with 15+ years of experience designing and building backend systems, REST APIs, and integration services. I am proficient in Java (Spring MVC / Spring Boot), C++, and comfortable with React for front-end development. I have a track record of delivering reliable APIs, microservices, and cloud-based architectures within Agile teams, with a strong focus on user authentication, data security, and system reliability. I thrive in build-and-run environments, collaborating with developers, testers, and operations to monitor, analyze incidents, and drive continuous improvement of production services. I am committed to applying best practices in DevOps, CI/CD, and monitoring to ensure scalable and secure systems.

Nam Il Jo

Web Developer, Programmer, Front-End Developer, +2

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I am a seasoned full-stack software engineer with 15+ years of experience designing and building backend systems, REST APIs, and integration services. I am proficient in Java (Spring MVC / Spring Boot), C++, and comfortable with React for front-end development. I have a track record of delivering reliable APIs, microservices, and cloud-based architectures within Agile teams, with a strong focus on user authentication, data security, and system reliability. I thrive in build-and-run environments, collaborating with developers, testers, and operations to monitor, analyze incidents, and drive continuous improvement of production services. I am committed to applying best practices in DevOps, CI/CD, and monitoring to ensure scalable and secure systems.…I am a seasoned full-stack software engineer with 15+ years of experience designing and building backend systems, REST APIs, and integration services. I am proficient in Java (Spring MVC / Spring Boot), C++, and comfortable with React for front-end development. I have a track record of delivering reliable APIs, microservices, and cloud-based architectures within Agile teams, with a strong focus on user authentication, data security, and system reliability. I thrive in build-and-run environments, collaborating with developers, testers, and operations to monitor, analyze incidents, and drive continuous improvement of production services. I am committed to applying best practices in DevOps, CI/CD, and monitoring to ensure scalable and secure systems.

Available to hire

I am a seasoned full-stack software engineer with 15+ years of experience designing and building backend systems, REST APIs, and integration services. I am proficient in Java (Spring MVC / Spring Boot), C++, and comfortable with React for front-end development. I have a track record of delivering reliable APIs, microservices, and cloud-based architectures within Agile teams, with a strong focus on user authentication, data security, and system reliability.

I thrive in build-and-run environments, collaborating with developers, testers, and operations to monitor, analyze incidents, and drive continuous improvement of production services. I am committed to applying best practices in DevOps, CI/CD, and monitoring to ensure scalable and secure systems.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Work Experience

Reliability Engineer (Contract) at CAF – Auckland Transport Project (via Whistle Engineering)

June 1, 2025 - Present

Analyze system logs and fault data to improve stability of large-scale transport systems. Work closely with developers, testers, and operations teams in a build-and-run environment. Support monitoring, incident analysis, and continuous improvement of production services.

Senior Software Developer / Internal Systems Engineer at CornSoft Co., South Korea

June 1, 2015 - November 30, 2025

Designed and maintained backend services and REST APIs for internal and external platforms. Built and maintained backend services and data integration components. Conducted internal service using React and JavaScript to modern API frameworks and microservice patterns. Designed and tested sample services focusing on performance, error handling, and reliability. Supported CI/CD pipelines and system monitoring.

Software Engineer / IT Systems Developer at Utas Corporation, South Korea

August 1, 2012 - February 28, 2015

Developed API services in Java and C++ for integrating production systems with ERP platforms. Built REST-based services to receive JSON data, process it, and store it in Oracle databases. Performed API testing, validation, and performance tuning. Supported monitoring, and issue resolution across environments.

Software Developer at Readn Co., Ltd

December 1, 2009 - September 30, 2012

Developed backend services and web APIs using Java and Spring MVC with JQuery, JSTL. Implemented real-time message processing and alert systems using Android. Worked with secure data handling and government compliance systems.

UniLock Co., Ltd at UniLock Co., Ltd

March 1, 2007 - September 30, 2009

Built POS systems using Java, C++Builder, and web technologies. Delivered highly customizable web interfaces with dynamic JavaScript and SQL Server. Designed database-driven integration between HR, finance, and inventory systems. Supported system deployment and user support.