Mariana B.
Manual QA Engineer | End-to-End QA | Web, Mobile & Desktop | QA Tester
🔥 Senior QA Engineer | Manual Testing | Web, Mobile & Desktop | Bug Reports I find the bugs that slip past everyone else: the ones hiding in edge cases, broken flows, and the parts of your product that standard test cases never reach. On multiple projects 🧪 What I Test: Web platforms, mobile apps, desktop software, PC & Steam games Fintech, e-commerce, logistics, entertainment, audio software High-traffic consumer products used by millions of users worldwide 🔍 What I Cover: Functional, regression, exploratory, and usability testing UI/UX consistency, design validation, language & content accuracy Cross-browser and cross-device testing Performance, crash detection, and edge case analysis API validation and terminal-based testing using Linux/Kali tools 📄 What You Get: Bug reports built for developers: exact reproduction steps, environment details, severity classification, screenshots, and video evidence Fast turnaround, clear communication, zero guesswork for your dev team 💼 Projects I've Worked On: Dark Craving · Team Combat League · UPS Tracking · MEF World · Skullcandy · Camtasia · DOPPY · and crowd-tested products across fintech, luxury fashion, travel, streaming, and gaming used by millions worldwide ✅ Why Clients Choose Me: 35 completed projects, 5+ years, zero compromises on quality I don't just execute test cases, I investigate Every bug I catch is a problem that never reaches your users 📋 Services: Manual testing · Bug reports · Functional & regression testing · Exploratory testing · UI/UX feedback · Cross-browser & cross-device validation · Full QA cycles · Quick bug validation tasks
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $351
Billed in all: $2,427$2.4k
$50 in the last 6 months
Across 44 contracts
Earnings, last 30 days
Skill rankings: Top 31% in Bug Investigation
Ranked by MRR among everyone on Upwork with the skill.
- #10Bug Investigation32 freelancers · 🇷🇴 #1Top 31%🇷🇴#1 of 1
- #50Test Report140 freelancers · 🇷🇴 #2Top 36%🇷🇴#2 of 3
- #207Performance Testing563 freelancers · 🇷🇴 #1Top 37%🇷🇴#1 of 4
- #274Bug Tracking & Reports641 freelancers · 🇷🇴 #5Top 43%🇷🇴#5 of 10
- #320Game Testing852 freelancers · 🇷🇴 #3Top 38%🇷🇴#3 of 9
- #335Testing968 freelancers · 🇷🇴 #4Top 35%🇷🇴#4 of 13
- #618QA Testing1,392 freelancers · 🇷🇴 #6Top 44%🇷🇴#6 of 15
- #619Functional Testing1,649 freelancers · 🇷🇴 #6Top 38%🇷🇴#6 of 17