QA Engineer

ITRex is seeking a QA Engineer for a client building high-load, security-critical digital finance and blockchain products used by millions of users. The role owns quality across the release cycle, including mobile and API testing, QA process development, and collaboration with engineering, product, and other stakeholders.

Responsibilities:

• Perform manual testing of mobile and APIs (REST, GraphQL)
• Design, execute, and maintain comprehensive Test Documentation
• Use AI tools as part of the QA toolkit to enhance test coverage and efficiency
• Collaborate closely with developers, product managers, and stakeholders to ensure product quality
• Define and establish QA processes and best practices for new projects
• Act as the sole QA when required, owning the end-to-end testing process
• Contribute as part of a QA team, ensuring alignment with shared goals and standards
• Work with product requirements together with the team during backlog refinement
• Participate in Agile ceremonies and provide input on quality-related risks

Requirements:

• 3+ years of hands-on QA experience
• Strong experience in manual testing across multiple platforms: Mobile applications (iOS/Android), Web applications, APIs (REST, GraphQL, etc.)
• Experience working with traffic sniffers / proxy tools such as Charles Proxy, Fiddler, Proxyman, etc
• Hands-on experience applying an agentic approach across the SDLC (e.g., Claude Code, AI agents for test design, execution, and defect analysis)
• Ability to design, execute, and maintain comprehensive test documentation
• Familiarity with bug tracking and test management systems (e.g., Zephyr, Qase, Test Trello)
• Understanding of SDLC and QA's role within Agile, Scrum, or Kanban environments
• Excellent communication skills, both verbal and written, with an ability to convey information clearly and concisely
• Product-oriented and collaborative mindset, effective in Agile cross-functional environments
• Strong attention to detail and ownership of quality
• Ability to stay effective under deadlines and production pressure
• Self-driven and proactive, able to operate independently within a defined framework
• English proficiency: Upper-intermediate and above
• Experience with mobile test automation
• Hands-on experience building/integrating skills & agents
• Knowledge of performance and security testing
• Experience with crypto testing