Senior QA Engineer

Overview Join Tether and Shape the Future of Digital Finance. At Tether, we’re building products and pioneering a global financial revolution. Our solutions enable businesses—from exchanges and wallets to payment processors and ATMs—to integrate reserve-backed tokens across blockchains. With blockchain technology, you can store, send, and receive digital tokens instantly, securely, and globally, 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 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 solutions like KEET, our flagship app for secure and private data sharing. Tether Education: Democratizing access to top-tier digital learning to empower individuals in the digital and gig economies, driving global growth and opportunity. Tether Evolution: Pushing the boundaries of technology and human potential to craft 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 anywhere in the world. If you’re passionate about fintech and ready to collaborate with bright minds, this is your opportunity to push boundaries and set 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. Are you ready to be part of the future? About the job The goal of a 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. 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. By continuously improving testing efficiency and reducing manual effort, they help accelerate release cycles without compromising quality. Focused on preventing defects from reaching end users, QA Engineers collaborate closely with development teams to uphold high standards of usability, performance, and reliability, blending the depth of manual validation with the speed and consistency of automation to deliver a seamless and dependable product experience. Responsibilities Manual QA: 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 (screenshots, logs). 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. Automated QA: Design and Develop Automated Test Cases: Build, maintain, and optimize automated test scripts based on product requirements and acceptance criteria. 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 and meets quality standards. Monitor and Analyze Test Results: Investigate test failures, identify root causes, and work with development teams to resolve defects. Collaborate with Development and QA Teams: Partner with manual QA engineers, developers, and product managers to align on testing strategy and priorities. Mandatory Education: Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field (or equivalent practical experience). Experience: 5+ years of experience in Quality Assurance, including both manual and automation testing. Demonstrated experience defining and executing QA strategies for complex software systems. 3+ years of experience in JavaScript, TypeScript & NodeJS. 3+ years of experience in test automation design and implementation (e.g., Selenium, Cypress, Playwright, or equivalent). 3+ years of experience in native mobile test automation design and implementation (e.g. Appium, Espresso, XCUITest, Detox, and other common tools). Expertise in defining and implementing test plans, automation frameworks, and quality metrics. Strong collaborative skills to align testing efforts with development, DevOps, and product management. Ability to critically evaluate requirements and proposals for quality, ensuring clarity, testability, and completeness. Demonstrated ability to act as a “red team” for quality — identifying risks and raising no-go flags when release criteria are not met. 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). Proven experience integrating automated tests into build and deployment workflows. Proficiency in QA and defect tracking tools (e.g., Qase, TestRail, Jira, Asana, Confluence). Soft Skills: Good communication and stakeholder management skills; strong analytical and problem-solving abilities. 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, REST Assured). Understanding of system architecture and software integration testing. Familiarity with performance testing tools (e.g., JMeter, k6, Gatling). Understanding of cybersecurity principles and secure software testing practices. Experience with test data management and environment configuration. Knowledge of performance, load, and security testing principles. Important information for candidates Apply only through our official channels. We do not use third-party platforms or agencies for recruitment unless clearly stated. All open roles are listed on our official careers page. Verify the recruiter’s identity. All our recruiters have verified profiles. If you’re unsure, you can check their profile or contact us through our website. Be cautious of unusual communication methods. We do not conduct interviews over WhatsApp, Telegram, or SMS. All communication is done through official company emails and platforms. Double-check email addresses. All communication from us will come from official domains. We will never request payment or financial details. If someone asks for personal financial information or payment during the hiring process, it is a scam. Please report it immediately. When in doubt, feel free to reach out through our official website. #J-18808-Ljbffr