Mira Okafor Senior QA Engineer
Denver, CO • mira.okafor@gmail.com • +1 (303) 555-0124
Profile Summary
- Senior QA Engineer with 7+ years of experience validating product quality across SaaS, fintech, and consumer-app companies, specialized in exploratory testing, regression strategy, and API validation.
- Hands-on across the testing stack with test management (Jira, TestRail, Xray, Zephyr), API testing (Postman, Insomnia, SoapUI), foundational automation (Playwright, Cypress, Selenium, Postman/Newman), and cross-browser testing (BrowserStack, Sauce Labs, LambdaTest).
- Strong grounding in risk-based testing, session-based exploratory methods, BDD and acceptance-criteria-driven test design, and test pyramid practices. Comfortable balancing manual depth paired with foundational automation on top of SDET-built frameworks.
- Comfortable working with backend, frontend, product, and design teams in sprint ceremonies, requirement reviews, and post-release retrospectives, advocating for quality early in the SDLC.
- Bias toward measurable bug-find rate over test-case count, mentor to junior QA engineers learning to write better test cases and reproduction steps, and frequent contributor to internal QA playbooks and shift-left forums.
Technical Skills
- Languages:
- JavaScript/TypeScript, Python, SQL, Bash, HTML/CSS
- Test Management:
- Jira, TestRail, Xray, Zephyr, Azure DevOps, Linear
- Test Automation:
- Playwright, Cypress, Selenium, Postman/Newman, Robot Framework
- API Testing:
- Postman, Insomnia, SoapUI, REST Assured, GraphQL clients
- Cross-Browser & Device:
- BrowserStack, Sauce Labs, LambdaTest, BitBar, real-device labs
- Methodology:
- risk-based testing, session-based exploratory, BDD, shift-left, smoke/sanity/regression, UAT coordination
- Defect & Reporting:
- defect lifecycle, severity/priority frameworks, reproduction-step authoring, JQL queries, dashboards
- Collaboration & Process:
- Agile/Scrum, sprint ceremonies, design reviews, retrospectives, mentorship
Education
Work Experience
- Owned end-to-end quality validation across 2 product squads at Guild Education, leading test planning, test case design, and regression strategy for the learner platform and employer marketplace features.
- Ran session-based exploratory testing across weekly feature releases, applying persona-driven heuristics and risk-based prioritization to surface ~40% of pre-release defects that scripted tests missed.
- Maintained regression test suites of ~600 scenarios across the learner enrollment and tuition reimbursement flows, running smoke and full regression cycles that held production escape rate under 1.2%.
- Logged and triaged ~280 defects per quarter in Jira and TestRail, writing clear reproduction steps with severity and priority assessments and partnering with developers to close ~92% of P1/P2 issues within sprint.
- Wrote and maintained ~180 automated test cases in Playwright and Postman on top of the SDET-built framework, focusing on stable high-value flows to add ~14% incremental coverage without lifting flakiness.
- Validated REST and GraphQL APIs across 45+ endpoints using Postman and Insomnia, checking response codes, payloads, schemas, error handling, and integration points between the learner service and employer billing system.
- Ran cross-browser and device matrix testing on BrowserStack and Sauce Labs across 12 browser+OS combinations and 8 mobile devices, catching ~6 layout regressions per release in the supported support matrix.
- Coordinated User Acceptance Testing and pre-release validation with product owners and merchant-success stakeholders across biweekly releases, running smoke, sanity, and final acceptance cycles that lowered rollback rate from ~8% to ~2% over four quarters.
- Built functional test plans and acceptance criteria for new shopping-feature launches across iOS, Android, and web, partnering with product, design, and engineering in sprint ceremonies to embed quality early.
- Wrote and maintained automated regression coverage in Cypress and Selenium for the redemption and rewards flows, adding ~120 stable tests and reducing manual regression time from 4 days to ~1 day per release.
- Ran exploratory testing sessions against promotional offer features, applying boundary, negative, and edge-case heuristics to surface ~70 high-impact bugs before user-facing rollout.