Salesforce CRM Automation
Java + Selenium framework built against Salesforce CRM from scratch using Page Object Model — full separation of concerns, TestNG runner, regression suite covering core CRM workflows.
Hi, I'm
Oscar Leung
QA Automation Engineer, SDET, Software Engineer
QA Automation Engineer & SDET across aerospace, government, and consumer tech — currently applying that rigor to frontier AI model evaluation. I build Playwright and Selenium frameworks, wire them into CI, and catch the bugs before your users do — so your team moves fast without breaking things.
Open to work — Davis / Sacramento · Bay Area · Remote
What I've Built
Projects
⭐ Featured Project
Playwright + TypeScript E2E & API Suite
My flagship QA portfolio: a 26-test Playwright/TypeScript suite covering UI and API layers of a real e-commerce app, built the way a production test suite should be — Page Object Model architecture, session-reuse authentication via storageState, a real defect documented with test.fail(), and GitHub Actions CI running the full suite on every push.
▶26 tests across UI and API layers — login, cart, checkout, REST endpoints
▶Page Object Model with typed fixtures — maintainable, not brittle
▶storageState session reuse — authenticated tests without repeated logins
▶A known app bug pinned with test.fail() — defects documented, not hidden
▶GitHub Actions CI on every push — green badge, public run history
Selenium + pytest E2E Suite — SauceDemo
Professional E2E test suite for a real e-commerce app: four core flows — login, inventory, cart, and checkout — covered with Python, Selenium, and pytest. Page Object Model architecture, data-driven parametrize, HTML failure reports with automatic screenshots, and a GitHub Actions CI workflow.
Job Search Automation Suite
Python/Selenium tooling that automates my own job-search pipeline: processes 1,000+ listings per headless run, deduplicates by URL, fills multi-platform application forms, and syncs every result to a Google Sheets dashboard — deployed 24/7 on PythonAnywhere with respectful, rate-limit-aware pacing.
Gotta Go — Restroom Finder (Live App)
A deployed, user-facing React app: find public restrooms near you on an interactive map. React + Vite + Leaflet on the Refuge Restrooms API — browser geolocation, accessibility & gender-neutral filters, one-tap directions, PWA-installable, live on GitHub Pages. Proof I ship products, not just test them.
Where I've Worked
Experience
AI Model Evaluator & Annotator (QA for frontier AI)
- Evaluated 600+ agentic coding tasks (500+ hours) for a frontier AI lab — triaging PR validity/difficulty and authoring ground-truth reference solutions
- Applied test-engineering rigor to LLM output: rubric-based scoring, adversarial red-teaming, failure-mode analysis fed back into fine-tuning
Product Engineer (contract)
- Shipped end-to-end delivery-platform workflows with founders — requirements to release in a two-person team
- Built the platform's ordering and fulfillment flows on Bubble, owning product design decisions end to end
Software QA Engineer (Remote)
- Automated 300+ test cases across two government Salesforce projects from the ground up
- JMeter load testing on a financial web platform under high-traffic simulation scenarios
- Reduced manual QA overhead and accelerated delivery cycles for state-level software
Spacecraft Systems Integration & Test Engineer
- Automated spacecraft simulation environments in Tcl — reduced test execution time ~35%
- Modernized legacy tooling and built auto-generation scripts for simulation data pipelines
- Operated under strict NASA and CMMI compliance standards in a safety-critical environment
Junior Software Quality Engineer
- Built Selenium/Java automation framework for spacecraft integration application from scratch
- Organized regression suites with TestNG; integrated automated runs into Jenkins CI/CD pipeline
- Collaborated with systems engineers on defect triage for high-reliability flight software
QA Engineer I
- Quality assurance for AT&T carrier apps at scale — 500+ Jira tickets triaged, 200+ defects filed, 330 fixes verified
- Android UI testing with Espresso; iOS & Android compatibility across multiple OS versions
- Led bug triage sessions and worked directly with developers to drive defect resolution
What I Know
Technical Skills
💻
Languages
🧪
Test & Automation
⚙
Tools & Platforms
☁
Cloud & Infrastructure
📈
Methodology
🌐
Communication & Languages
Who I Am
About Me
I'm a QA Automation Engineer & SDET based in Davis, CA with a B.S. in Computer Science from San José State University, testing professionally since 2019 across aerospace, government, consumer tech, and AI. I write production Python, Java, and TypeScript, architect test automation frameworks from scratch, and deliver measurable results — not just coverage numbers.
My background spans spacecraft systems validation at Maxar, Salesforce automation for the State of Illinois, mobile QA for AT&T carrier apps at Location Labs / Avast, and product work at Dabba Eats — and since November 2025 I've been applying that same rigor to frontier AI model evaluation at Handshake AI: 600+ agentic coding evaluations, rubric-based scoring, and adversarial red-teaming. I'm the engineer who thinks about quality from day one — not as an afterthought.
I shipped hand-written Selenium frameworks years before AI pair-programming existed — which is why I can verify AI-generated code instead of trusting it.
Currently available for Software Engineer, QA Automation, and SDET roles in Davis/Sacramento, the Bay Area, or fully remote. Let's build something reliable together.
✓ Available Now
✓ Davis / Bay Area & Remote
Testing since 2019
2019
Testing professionally since
600+
AI code evaluations for a frontier lab
4
Industries: Aerospace · Gov · Consumer · AI
26
Automated tests in my public Playwright suite — CI green
Certifications
- Google Cloud Platform — 5-course Architecting specialization
- Interview Kickstart
- B.S. Computer Science, Minor in Japanese
Off the Clock
Beyond the Code
🥏
Ultimate Frisbee
I play ultimate around the Bay Area. Fast decision-making, team trust, and competing under pressure — qualities I bring to the engineering floor too.
🎲
Board Games
Strategy games are my obsession. I love optimization under constraints — whether it's a resource management euro or a social deduction game with 10 people.
📷
Photography
Street, travel, and candid — I carry a camera everywhere. Road trips to New Orleans, Nashville, and Honolulu have produced some of my favourite shots.
Work With Me
Let's Talk
I'm actively interviewing for Software Engineer, QA Automation, and SDET roles. If you're building something that needs reliability, automation, and an engineer who ships — let's have a conversation.
- 📍 Davis / Sacramento · Bay Area · Remote
- ⏱ Available to start within 2 weeks
- 💼 Open to contract or full-time
- 🎯 Sacramento employers: CalHR ITS-I list-eligible (95%) through Apr 2027
Fastest: oscarleung1@gmail.com · or LinkedIn DM — I reply within 24 hours.