SECTION I · THE BRIEF
Brief #44243Updated 25 AUG 2026LONDONGreenhouseLIGHTSPEED VENTURE PARTNERS
Employbl Company Profile

Senior QA Engineer

Arena Club sells its real, physical cards In a hybrid of the online- and physical- world.

Location
London
Company size
10–50
Posted
Yesterday
Via
Greenhouse
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Arena Club logo

Senior QA Engineer · Arena Club

View company profile
Job title
Senior QA Engineer
Job location
London
Job description

About Arena Club

Arena Club is redefining the sports cards and memorabilia landscape through the industry’s first digital card show. Co-founded by 5x World Series Champion Derek Jeter and serial entrepreneur Brian Lee, Arena Club delivers a fully digital, trust-driven marketplace built for collectors. Our platform integrates grading and authentication, vaulting, and digital pack experiences, empowering users to buy, sell, and showcase collections in personalized online showrooms from anywhere in the world.

 

About The Role

We’re seeking a Senior QA Engineer to elevate quality across our web, mobile, and backend platforms. You don’t need a collectibles background; what matters is your curiosity, precision, and commitment to building reliable systems. You’ll test new features, strengthen our automation suite, uncover edge cases before they reach customers, and help maintain a seamless experience across the entire Arena Club ecosystem.

This role blends both manual and automated testing. You’ll collaborate closely with Engineering, Product, and Operations to ensure every release meets a high bar for performance, stability, and accuracy.

 

What You Will Do

  • Design, maintain, and execute test plans and test cases for web, mobile, and backend services
  • Perform manual functional, regression, integration, and usability testing across multiple environments
  • Contribute to and execute automated tests using existing frameworks and tools
  • Collaborate with engineers and product managers to define test coverage, acceptance criteria, and edge cases
  • Validate data integrity and workflow behavior across reviewing, grading, vaulting, purchasing, and marketplace features
  • Log, track, and retest defects with clear documentation and reproducible steps
  • Participate in sprint planning, standups, and release readiness activities
  • Help improve QA documentation, tooling, and processes across the team

 

Qualifications

  • 6+ years of QA experience, including hands-on testing of web and/or mobile applications
  • Familiarity with backend/API testing and tools such as Postman or similar
  • Proficient in Playwright, Appium, and CI/CD workflows
  • Solid SQL skills (including joins and complex queries) to assist with technical support and data integrity checks
  • Solid understanding of software testing methodologies and SDLC
  • Hands-on experience using AI tools (Claude or Cursor preferred; other agentic tools welcome) to ship code, build agents, and automate workflows
  • Detail-oriented with strong written and verbal communication skills
  • Ability to work cross-functionally with Product, Engineering, and Operations
  • Nice to have: experience in marketplaces, logistics/ops-heavy environments, or collectibles
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Where this role is based

London

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Arena Club headquarters

Los Angeles, CA

Company size

1050 employees

Founded

2021

Total raised

$10,000,000

View company profile ↗

Funding rounds

  • Series A$10M