QA Engineer – Digital Finance & Blockchain

About the role

ITRex is looking for a QA Engineer to join a high-scale product in the digital finance and blockchain domain, built for a globally distributed tech company serving millions of users. The product ecosystem has a strong mobile focus. You will own quality across the full release cycle, working closely with engineering, product and stakeholders, and your work will directly affect the reliability and security of large-scale financial systems.

Key responsibilities

• Perform manual testing of mobile apps and APIs (REST, GraphQL)
• Design, execute and maintain comprehensive test documentation
• Use AI tools as part of the QA toolkit to improve test coverage and efficiency
• Collaborate 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 to the QA team and align with shared goals and standards
• Work with product requirements during backlog refinement and take part in Agile ceremonies, giving input on quality-related risks

Required profile

• 3+ years of hands-on QA experience
• Strong manual testing experience across mobile (iOS/Android), web and API testing
• Experience with traffic sniffers and proxy tools such as Charles Proxy, Fiddler or Proxyman
• 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 test documentation
• Upper-intermediate English or above

Required skills

• Familiarity with bug tracking and test management systems (e.g., Zephyr, Qase, Test Trello)
• Understanding of SDLC and QA's role in Agile, Scrum or Kanban environments
• Nice to have: mobile test automation, building and integrating AI agents, performance and security testing, crypto testing

What we offer

• Remote flexibility and fair, competitive compensation with medical, wellness and learning benefits
• Ownership opportunities, AI-enhanced productivity and learning investment (English classes, professional development)
• Career progression and a supportive, responsive team culture