Web3 Senior QA Engineer

Join Tether and Shape the Future of Digital Finance

At Tether, we’re not just building products, we’re pioneering a global financial revolution. Our cutting-edge solutions empower businesses—from exchanges and wallets to payment processors and ATMs—to seamlessly integrate reserve-backed tokens across blockchains. By harnessing the power of blockchain technology, Tether enables you to store, send, and receive digital tokens instantly, securely, and globally, all at a fraction of the cost. Transparency is the bedrock of everything we do, ensuring trust in every transaction.

Innovate with Tether

• Tether Finance: Our innovative product suite features the world’s most trusted stablecoin, USDT, relied upon by hundreds of millions worldwide, alongside pioneering digital asset tokenization services.
• Tether Power: Driving sustainable growth, our energy solutions optimize excess power for Bitcoin mining using eco-friendly practices in state-of-the-art, geo-diverse facilities.
• Tether Data: Fueling breakthroughs in AI and peer-to-peer technology, we reduce infrastructure costs and enhance global communications with cutting-edge solutions like KEET, our flagship app that redefines secure and private data sharing.
• Tether Education: Democratizing access to top-tier digital learning, we empower individuals to thrive in the digital and gig economies, driving global growth and opportunity.
• Tether Evolution: At the intersection of technology and human potential, we are pushing the boundaries of what is possible, crafting a future where innovation and human capabilities merge in powerful, unprecedented ways.

Why Join Us?

Our team is a global talent powerhouse, working remotely from every corner of the world. If you’re passionate about making a mark in the fintech space, this is your opportunity to collaborate with some of the brightest minds, pushing boundaries and setting new standards. We’ve grown fast, stayed lean, and secured our place as a leader in the industry.

If you have excellent English communication skills and are ready to contribute to the most innovative platform on the planet, Tether is the place for you.

About the job

The goal of a Senior QA Engineer is to ensure product quality, reliability, and an exceptional user experience through a balanced combination of manual and automated testing. This involves designing and executing comprehensive test cases, performing exploratory and regression testing, identifying and documenting defects, and ensuring issues are properly tracked and resolved.

Senior QA Engineers also develop and maintain scalable automation frameworks, integrating them into continuous integration and delivery pipelines to achieve broad coverage across functional, regression, and performance scenarios.

Responsibilities

• Design and Execute Test Cases: Create detailed, well-structured test plans and cases based on product requirements and acceptance criteria.
• Conduct Exploratory Testing: Investigate the application beyond scripted cases to identify edge cases, usability issues, and unexpected behavior.
• Identify and Document Defects: Accurately record issues with clear steps to reproduce, expected vs. actual results, and relevant evidence.
• Collaborate with Development Teams: Work closely with developers, product managers, and designers to clarify requirements and discuss quality concerns.
• Validate Bug Fixes: Re-test resolved defects to confirm they are fully fixed and do not introduce new issues.
• Design and Develop Automated Test Cases: Build, maintain, and optimize automated test scripts.
• Create and Maintain Test Automation Frameworks: Develop scalable, reusable, and maintainable test automation frameworks that support functional, regression, and performance testing.
• Integrate Automation into CI/CD Pipelines: Collaborate with DevOps and development teams to embed automated tests into continuous integration and delivery workflows.
• Execute Automated Functional Testing: Run automated test suites to validate that each feature works as expected.
• Monitor and Analyze Test Results: Investigate test failures, identify root causes, and work with development teams to resolve defects.

Mandatory Requirements

• Education: Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field.
• Experience:
  • 5+ years of experience in Quality Assurance, including both manual and automation testing.
  • 3+ years of experience in JavaScript, TypeScript & Node.js.
  • 3+ years of experience in test automation design and implementation (e.g., Selenium, Cypress, Playwright).
  • 3+ years of experience in native mobile test automation design and implementation (e.g. Appium, Espresso, XCUITest, Detox, AWS Device Farm, BrowserStack).
• Technical Knowledge:
  • Strong understanding of QA methodologies, test design techniques, and SDLC/Agile/Scrum practices.
  • Hands-on experience with CI/CD pipelines and DevOps practices (e.g., GitHub Actions, Jenkins, GitLab CI).
  • Proficiency in QA and defect tracking tools (e.g., TestPad, Qase, TestRail, Jira, Asana, Confluence).
• Language: Proficiency in English (spoken and written).

Preferred

• Certifications: ISTQB Advanced Level or equivalent QA certification.
• Technical Knowledge:
  • Knowledge of database systems (SQL, NoSQL) and API testing tools (e.g., Postman, Newman, REST Assured).
  • Understanding of system architecture and software integration testing.
  • Familiarity with performance testing tools (e.g., JMeter, k6, Gatling).