Senior QA Engineer - Trading & Analytics

Who We Are Freedx is a newly established cryptocurrency exchange focused on building a scalable, compliant, and liquidity driven trading platform. Our team brings deep experience across crypto exchanges, payments, market structure, and financial infrastructure. Freedx is built for serious traders and emerging markets, with a clear focus on unit economics, operational discipline, and sustainable growth. Our Vision Freedx aims to be a trusted global exchange by combining strong liquidity, efficient onboarding, and disciplined growth execution. We focus on long term retention and monetization rather than vanity metrics, ensuring that growth directly translates into trading volume, revenue, and profitability. Role Overview We are looking for a Senior QA Engineer to ensure the quality, reliability, and accuracy of trading and related products for a centralized crypto exchange. This role requires strong technical knowledge and an understanding of complex financial systems. You will test core trading operations, real-time data streams, financial calculations, APIs, system integrations, analytics, and user-facing dashboards. You will work closely with Product Managers and Engineering teams throughout the full development lifecycle, from requirement analysis and test planning to release validation and production incident investigation. The ideal candidate understands how trading systems behave under normal, edge-case, and failure scenarios and can identify risks related to incorrect calculations, delayed data, system synchronization, balance inconsistencies, and order execution. Responsibilities Own the QA process for trading and analytics productsReview product requirements and identify missing scenarios, risks, and technical dependenciesTest order creation, execution, cancellation, rejection, and order status transitionsTest system integrity, real-time market data, WebSocket streams, and synchronization between servicesValidate PnL, margin, liquidation, fees, balances, funding, and risk-control calculationsTest trading dashboards, system analytics, reports, and data consistencyPerform functional, integration, API, UI, regression, and end-to-end testingCreate test plans, test cases, checklists, test data, and regression suitesVerify that product delivery meets functional, technical, and quality standardsTest negative scenarios, edge cases, service failures, and recovery flowsInvestigate production issues, reproduce defects, analyze logs, and support incident reviewsWork closely with Product Managers, developers, DevOps, data, and support teamsImprove release validation, defect prevention, QA processes, and test coverageCross device product support Requirements 4+ years of QA experienceExperience with crypto or FX exchanges, brokerage, fintech, or trading platformsStrong understanding of order books, order types, liquidity, margin, PnL, fees, and liquidationExperience testing APIs, WebSockets, databases, analytics dashboards, and complex data flowsExperience with functional, integration, regression, and end-to-end testingAbility to validate financial calculations and complex business logicAbility to analyze system behavior across multiple connected servicesStrong analytical, technical, and communication skillsHigh attention to detail and a structured approach to problem-solvingExperience with test automation is a plusKnowledge of authentication, payments, deposits, withdrawals, and balance operations is a plusEnglish level B2 Technical Skills And Tools Strong experience testing REST APIs using Postman or similar toolsExperience working with Swagger/OpenAPI documentationExperience testing WebSocket connections and streamed dataGood knowledge of HTTP, JSON, authentication methods, request headers, status codes, and API error handlingExperience using browser developer tools for frontend and network debuggingExperience with log monitoring and analysis tools such as Kibana, Grafana, Datadog, or similarExperience with performance-testing tools such as JMeter, k6, or similarExperience with test management and issue-tracking tools such as Jira, TestRail, Zephyr, or similarUnderstanding of microservice architecture, message queues, and asynchronous system communicationExperience with Kafka, RabbitMQ, or similar technologies is a plusAbility to write SQL queries and validate data directly in databases is a plusExperience with automation tools such as Playwright, Cypress, Selenium, or similar is a plus Benefits Freedx is an equal opportunity employer. We stand for an open and inclusive work environment that fosters the well-being of everyone. We embrace and encourage differences in age, color, disability, ethnicity, family or marital status, gender identity or expression, language, national origin, physical and mental ability, race, religion, sexual orientation, socio-economic status, veteran status, and other characteristics that make our people unique.