QA Engineer — Web/Mobile/API Testing (Remote)

ProphetX; United States; Remote; USD 90,000 - 130,000; Full time

Benefits offered by this job

Equity opportunities

Medical, dental, and vision coverage

Flexible time off

Job summary

ProphetX is seeking a QA Engineer to act as a generalist ensuring quality across the platform. You will validate new features, run regression cycles, test APIs and backend behavior, and help decide when a release is ready to ship.

You may switch between web, mobile, and API testing while collaborating with product, QA, and automation engineers. Candidates based in the Eastern or Central time zones are preferred to overlap with the engineering team, and the role supports fully remote work within

Qualifications

• 3 to 5 years of QA experience on web and mobile apps.
• Strong manual testing and test plan writing.
• Experience testing APIs with Postman; SQL knowledge.
• Proficient with Jira and TestRail.
• Experience with financial, wallet, or payments flows is a plus.
• Interest in betting and prediction markets is a plus.
• Comfort using AI tools to speed up test design and bug triage.
• Clear written communication and ability to prioritize across multiple teams.
• Agile, fast-moving environment with regular releases and remote collaboration across ET/CT hours.

Responsibilities

• Test new features across web, mobile, and API with product and engineering.
• Write and maintain test cases and plans for new and existing features.
• Run regression cycles and verify builds before release.
• Perform exploratory testing to uncover issues not covered by scripted tests.
• Test backend/API behavior, including data integrity and error handling.
• Validate wallet and financial transaction flows with care for accuracy.
• Document defects with clear reproduction steps, evidence, and severity, and verify fixes.
• Collaborate with mobile QA and automation to identify regression cases for automation.
• Flag quality risks and suggest coverage improvements to the QA Lead.

Skills

QA testing

Manual testing

API testing

Postman

SQL

Jira

TestRail

Bug tracking

Communication

Agile

Tools

Postman

Jira

TestRail

Job description

ProphetX is seeking a QA Engineer to act as a generalist ensuring quality across the platform. You will validate new features, run regression cycles, test APIs and backend behavior, and help decide when a release is ready to ship.

You may switch between web, mobile, and API testing while collaborating with product, QA, and automation engineers. Candidates based in the Eastern or Central time zones are preferred to overlap with the engineering team, and the role supports fully remote work within