Michael Sim
Software Engineer at Optimized Payments
Atlanta, Georgia, United States
Summary
👤
Senior🎓
Top SchoolMichael Sim is a software engineer with 8 years of experience building backend systems, data pipelines, and developer tooling across enterprise products. Based in Atlanta, he has strengthened test reliability and modernized Java testing frameworks at Atlassian, led GraphQL/REST API redesigns that improved server performance, and built production ETL workflows with Airflow and Apache Beam on Google Cloud for The Home Depot. Comfortable across Java, Python, JavaScript, and C#, he combines backend architecture with hands-on implementation in Spring Boot and cloud data services. He’s worked closely with ML teams to validate and refine LLM-generated code changes, bringing practical prompt and review practices into engineering workflows. Known for mentoring interns and onboarding new engineers, he blends technical depth with an emphasis on maintainability and measurable quality improvements. Currently at Optimized Payments, he continues to focus on scalable, testable systems that reduce operational burden and accelerate delivery.
8 years of coding experience
3 years of employment as a software developer
Mountain View High SchoolBachelor of Science - BS Computer Science, Bachelor of Science - BS Computer Science at Georgia State UniversityGeorgia Gwinnett College
Github Skills (25)
steam9
api8
gift6
sms-messages5
scrape5
hashtag5
feed5
scraper4
meta-tags4
music4
tiktok3
video-download3
metadata3
amazon3
java3
Programming languages (5)
Github contributions (5)
michaeldsim/website-v2
Sep 2020 - Apr 2023
This is the source code for my personal website. It was created in ReactJS to give myself some experience in front-end web libraries. I am sure there are some things that can be done better, so feel free to give me some advice!
Contributions:2 PRs, 66 pushes, 4 branches in 2 years 7 months
adviceweb-front-endcssjavascriptmyself
Juxtaposed365/MercuryMessaging
Nov 2020 - Dec 2020
This app will allow you to schedule an event with Hermes, then have it send to multiple messaging applications for reminders. It will need AWS for SMS texting.
Contributions:7 commits, 1 PR, 5 pushes in 28 days
textingsms-messagesdevice-managementamazonsms
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