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I am a full-stack software engineer with 5 years of experience building and deploying scalable cloud applications. I have strong skills in AWS technologies, React, Java, and Python. I have successfully delivered SaaS and mobile products from concept to launch, including an AI-powered Android app with a strong user base and excellent ratings. Currently, I am focused on architecting and deploying serverless AWS solutions that support microservices architectures with high uptime and scalability. I am passionate about leveraging cloud technologies to build innovative products and improve user experience while maintaining robust security and operational efficiency.…I am a full-stack software engineer with 5 years of experience building and deploying scalable cloud applications. I have strong skills in AWS technologies, React, Java, and Python. I have successfully delivered SaaS and mobile products from concept to launch, including an AI-powered Android app with a strong user base and excellent ratings. Currently, I am focused on architecting and deploying serverless AWS solutions that support microservices architectures with high uptime and scalability. I am passionate about leveraging cloud technologies to build innovative products and improve user experience while maintaining robust security and operational efficiency.

David Chun

Programmer, Full Stack Developer, Cloud Developer, +2

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I am a full-stack software engineer with 5 years of experience building and deploying scalable cloud applications. I have strong skills in AWS technologies, React, Java, and Python. I have successfully delivered SaaS and mobile products from concept to launch, including an AI-powered Android app with a strong user base and excellent ratings. Currently, I am focused on architecting and deploying serverless AWS solutions that support microservices architectures with high uptime and scalability. I am passionate about leveraging cloud technologies to build innovative products and improve user experience while maintaining robust security and operational efficiency.…I am a full-stack software engineer with 5 years of experience building and deploying scalable cloud applications. I have strong skills in AWS technologies, React, Java, and Python. I have successfully delivered SaaS and mobile products from concept to launch, including an AI-powered Android app with a strong user base and excellent ratings. Currently, I am focused on architecting and deploying serverless AWS solutions that support microservices architectures with high uptime and scalability. I am passionate about leveraging cloud technologies to build innovative products and improve user experience while maintaining robust security and operational efficiency.

Available to hire

I am a full-stack software engineer with 5 years of experience building and deploying scalable cloud applications. I have strong skills in AWS technologies, React, Java, and Python. I have successfully delivered SaaS and mobile products from concept to launch, including an AI-powered Android app with a strong user base and excellent ratings.

Currently, I am focused on architecting and deploying serverless AWS solutions that support microservices architectures with high uptime and scalability. I am passionate about leveraging cloud technologies to build innovative products and improve user experience while maintaining robust security and operational efficiency.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

Javanese

Advanced

Work Experience

Software Engineer at Dynamic Apps LLC

December 1, 2023 - Present

Bootstrapped a solo SaaS product from concept to first revenue in 3 months using AWS serverless technologies, supporting hundreds of concurrent users. Built and launched an AI chat Android app with over 2,200 users and a 4.7/5.0 rating. Implemented usage-based credits and subscription tiers generating 22 paying subscribers and 90+ trial users. Architected and deployed a scalable AWS stack (EC2, Lambda, API Gateway, DynamoDB) supporting microservices with 24/7 uptime and auto-scaling. Integrated OAuth2 SSO with Google Cloud for secure authentication and launched targeted Google Ads campaigns to reduce user acquisition cost.

Software Engineer II at Transaction Network Services

September 30, 2023 - August 22, 2025

Developed and deployed a React-based web dashboard integrated with REST APIs to automate POS device diagnostics, reducing onboarding time by two weeks. Led migration from Python 2.x to Python 3.10 and upgraded Django framework. Developed Java Spring API and frontend to monitor SIM data usage, replacing manual reporting. Created email alert service for SIM overages and migrated app to Rocky Linux 8 with zero downtime. Built interactive JavaScript dashboards for store credit and revenue and implemented three-installment credit payment feature. Maintained Cordova-based iOS app including TestFlight, builds, and App Store deployment.

Programmer Analyst at Amarex Clinical Research

September 30, 2019 - August 22, 2025

Built native Android (Java) and iOS (Swift) apps for ePRO platform enabling real-time clinical trial data synchronization. Integrated Firebase Cloud Messaging to automate patient reminders and reduce manual follow-ups.