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Hi, I'm Jungwoo Lee, a senior software engineer and architect with 15+ years building production enterprise systems at scale. I run SJSoftware in Perth, delivering AI-enabled software and cloud-native solutions for diverse industries. I ship production systems that integrate AI into business operations using Anthropic and OpenAI APIs, and I’m AWS Certified Developer with experience migrating legacy stacks and deploying serverless architectures. I’m available for senior contract engagements.…Hi, I'm Jungwoo Lee, a senior software engineer and architect with 15+ years building production enterprise systems at scale. I run SJSoftware in Perth, delivering AI-enabled software and cloud-native solutions for diverse industries. I ship production systems that integrate AI into business operations using Anthropic and OpenAI APIs, and I’m AWS Certified Developer with experience migrating legacy stacks and deploying serverless architectures. I’m available for senior contract engagements.

Jungwoo Lee

PRO

Full Stack Developer, AI Developer, Cloud Developer, +2

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Hi, I'm Jungwoo Lee, a senior software engineer and architect with 15+ years building production enterprise systems at scale. I run SJSoftware in Perth, delivering AI-enabled software and cloud-native solutions for diverse industries. I ship production systems that integrate AI into business operations using Anthropic and OpenAI APIs, and I’m AWS Certified Developer with experience migrating legacy stacks and deploying serverless architectures. I’m available for senior contract engagements.…Hi, I'm Jungwoo Lee, a senior software engineer and architect with 15+ years building production enterprise systems at scale. I run SJSoftware in Perth, delivering AI-enabled software and cloud-native solutions for diverse industries. I ship production systems that integrate AI into business operations using Anthropic and OpenAI APIs, and I’m AWS Certified Developer with experience migrating legacy stacks and deploying serverless architectures. I’m available for senior contract engagements.

Available to hire

Perth, Australia

Hi, I’m Jungwoo Lee, a senior software engineer and architect with 15+ years building production enterprise systems at scale. I run SJSoftware in Perth, delivering AI-enabled software and cloud-native solutions for diverse industries.

I ship production systems that integrate AI into business operations using Anthropic and OpenAI APIs, and I’m AWS Certified Developer with experience migrating legacy stacks and deploying serverless architectures. I’m available for senior contract engagements.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

Korean

Fluent

Work Experience

Founder / Senior Software Engineer at SJ Software (Self-Employed)

January 1, 2020 - Present

Developed an AI-assisted analysis pipeline leveraging OpenAI API to generate meaningful natural-language insights from complex geospatial and geological slope data, enabling non-technical users to interpret results. Designed data visualization approaches using D3 and Amcharts to display complex geological data within the AI analysis platform (Curtin University). Built AI Documents Tailoring Tool — a consumer SaaS platform that rewrites resumes using Anthropic AI (Next.js + Anthropic). Designed, developed, and deployed an Indoor Venue Booking SaaS platform — a multi-tenant booking system with branded reservation sites, member accounts, and gift cards, and AI-assisted customer support chatbot (Anthropic API). Developed a Warehouse ERP — an internal B2B platform unifying orders, quotes, invoices, and inventory for a maritime supply company (Next.js + Supabase + AWS). Designed, developed, and deployed 13 production websites using AWS-based serverless and CDN architecture. Co-founded

Middleware Architect at SK Planet

October 1, 2014 - September 1, 2018

Developed a chatbot system using Python, Amazon API Gateway, Amazon EC2, MySQL, and LINE Messenger API — an automated alert system delivering real-time error notifications to engineers responsible for application maintenance. Designed software and infrastructure architecture for low-cost, high-reliability datacenter operations in alignment with SK Planet policy. Managed and customised JIRA and JIRA Service Desk to streamline infrastructure resource request processes for development teams. Focused on system reliability and resilience through proactive troubleshooting and incident management.

Software Engineer at LG CNS

January 1, 2006 - September 1, 2014

Led software architecture design for large-scale enterprise systems, defining functional and non-functional requirements including performance, scalability, reliability, and security. Designed and maintained high-availability system architectures using Java, JSP, WebLogic, Apache, and JBoss. Led system performance optimization through log analysis, APM tools (Jennifer), memory analysis (MAT), and root-cause investigations. Defined and developed common frameworks and reusable modules, establishing development standards adopted across project teams. Conducted architecture reviews, source code inspections, and performance testing to identify system risks and improve overall resilience.