We are looking for a Middle QA Engineer to join our team and help improve a complex multi-tenant web platform used by professional users to monitor, analyze, and manage operational and financial data. The system includes real-time data streaming, trade and position analytics, shared data modules, and an Excel Add-In that extends the platform’s core functionality. You will work in a cross-functional team on a long-term product that is actively evolving and growing in features and complexity. 

What you’ll do 

• Test a multi-module web application that enables users to view, manage, and analyze large sets of operational and analytical data. 
• Validate data accuracy, risk calculations, and business logic across several interconnected modules. 
• Test real-time updates delivered via SignalR, ensuring correct synchronization across users and sessions. 
• Collaborate closely with developers, Team Lead, and PM to clarify requirements and influence product quality. 
• Create and maintain test documentation (test cases, checklists, test suites). 
• Perform functional, regression, integration, UI/UX, and exploratory testing. 
• Test communication flows between distributed services, background jobs, and APIs. 
• Participate in testing the Excel Add-In and ensure its correct integration with the main application. 
• Provide detailed bug reports and assist the team during investigation. 
• Contribute to continuous improvement of QA workflows and overall product reliability. 

What we’re looking for 

• 2.5+ years of experience in QA for web applications. 
• Strong understanding of testing methodologies, SDLC, and QA processes. 
• Hands-on experience testing systems with real-time data updates (SignalR/WebSockets/SSE or similar). 
• Proficiency with REST API testing tools (Postman, Swagger, etc.). 
• Solid SQL knowledge for validating data integrity and performing complex queries. 
• Experience working with distributed or multi-module systems. 
• Ability to read logs, investigate issues, and collaborate with developers on root-cause analysis. 
• Understanding of client–server architecture and asynchronous processing. 
• Experience with Jira, TestRail, or similar tools. 
• Upper Intermediate+ English level. 

Nice to have 

• Experience with message brokers (RabbitMQ, Kafka, etc.). 
• Familiarity with background processing tools (e.g., Hangfire). 
• Experience testing desktop components or Excel Add-Ins. 
• Domain knowledge in trading, financial analytics, or brokerage systems. 
• Basic understanding of cloud platforms (Azure preferred). 
• Experience with automation (API or UI) will be a plus. 

Why you’ll enjoy working with us 

• Opportunity to work on a long-term, business-critical product with complex logic and real-time processing. 
• Collaboration with a strong engineering team and supportive leadership. 
• Room for professional growth, knowledge sharing, and exposure to advanced technologies. 
• Flexible schedule and remote-friendly environment. 
• Competitive compensation and transparent performance culture. 

If you are a proactive QA Engineer who enjoys challenging products, real-time data, and complex system logic - we’d be happy to hear from you. Apply now and become part of a team that values quality, ownership, and continuous improvement.