Backend & Distributed Systems Engineer
I build scalable infrastructure and production systems — from identity platforms at Salesforce to LLM-powered workflows and high-throughput data systems.
Hackathons
1st Place — National AI Health Hackathon$20,000
National Academy of Medicine
Coding for Change: Tackling the U.S. STI Epidemic
Highlighted Poppy as a winning AI solution improving STI diagnosis accessibility and early detection.
Top 3 — AI Innovation Challenge$2,000
UC Irvine News
AI Innovation Challenge Winners
Recognized Overshoot as a top-performing AI project in the entrepreneurship competition out of 80+ teams.
Experience
Associate Member of Technical Staff
CurrentSalesforce · Bellevue, WA
Nov 2025 – Present
- Designed and scaled a provisioning system handling thousands of requests, improving reliability and operational efficiency
- Automated onboarding workflows, saving ~20% sprint capacity per engineer
- Built event-driven Slack notification system to improve visibility into provisioning events and failures
- Developed backend services and APIs in Go with React-based internal tooling
- Worked on security-compliant IAM infrastructure ensuring auditability and policy enforcement
GoReactSQL
Software Engineer Intern
Salesforce · San Francisco, CA
Jun 2025 – Sep 2025
- Reduced provisioning time from ~2 weeks to ~10 minutes through automation
- Designed backend services in Java and SQL to handle identity and entitlement workflows
- Built scalable APIs and integrated with multiple internal systems
- Collaborated cross-functionally to deploy production-ready features
JavaJavaScriptSQL
Research Software Engineer
UC Irvine · Irvine, CA
Jun 2024 – Apr 2025
- Built system to convert Jupyter notebooks into DAG-based workflows, reducing setup time from ~3 weeks to ~10 minutes
- Supported a distributed platform with 31,000+ executions across 330+ users
- Engineered backend components for large-scale data processing using Python, Java, and Scala
- Designed core architecture for LLM-based workflow automation system
PythonJavaScalaSQL
Software Engineer Contractor
OC Vibe · Irvine, CA
Jan 2024 – Jan 2025
- Developed system processing ~10K pages/day continuously (24/7)
- Reduced analyst effort by ~95% (1 hour → 3 minutes)
- Built data pipelines for scraping, processing, and storing large-scale datasets
- Deployed containerized services with Docker and Azure CI/CD
PythonReactMongoDBDockerAzure
Projects
Get in touch
Let's build something great.
I'm open to new opportunities, collaborations, and interesting conversations. Whether it's a role, a project, or just a chat — reach out.
choiji2@uci.edu