Senior QA Engineer - FinTech & AI-Driven Quality

Juice Exchange, LLC; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

JuiceX, a rapidly growing prediction markets exchange, is hiring a Senior QA Engineer to own quality across the full delivery lifecycle. You will work across distributed backend services in Rust, React/TypeScript front ends, a Kubernetes cloud platform, and integrate with payment and market infrastructure partners.

Responsibilities include turning requirements into testable criteria, designing risk-based test strategies, building automated test suites, and owning production release decisions

Qualifications

• 5+ years in QA or quality engineering, including owning release sign off for production systems.
• Strong test design and risk analysis skills.
• Hands on test automation, ideally Playwright with TypeScript, plus API testing.

Responsibilities

• Turn business requirements into clear, testable acceptance criteria before development starts.
• Define a risk based test strategy for each initiative, balancing unit, integration, end to end, performance, and exploratory testing.
• Design, build, and maintain automated test suites and frameworks, and integrate them into CI/CD.
• Review changes for test quality and coverage, and drive flaky or failing tests to root cause.
• Own the go or no go decision for production releases, with clear, auditable evidence of what was tested.
• Track escaped defects, feed the lessons back into requirements and tests, and raise the quality bar across the team.
• Use AI to turn requirements into test scenarios, edge cases, and automation.
• Run agent driven exploratory and UI testing.
• Build AI assisted tooling for test maintenance and failure triage, and reusable QA workflows the team can apply.
• Test and evaluate AI powered product features, verifying AI output against real system behavior before sign off

Skills

Risk based testing

Test design

Test automation

Code reading/writing

CI/CD usage

Communication

Tools

Playwright

TypeScript

API testing

Job description

JuiceX, a rapidly growing prediction markets exchange, is hiring a Senior QA Engineer to own quality across the full delivery lifecycle. You will work across distributed backend services in Rust, React/TypeScript front ends, a Kubernetes cloud platform, and integrate with payment and market infrastructure partners.

Responsibilities include turning requirements into testable criteria, designing risk-based test strategies, building automated test suites, and owning production release decisions