Freelance QA Tester (m/f/d)

Stuttgart

We’re looking for a meticulous and independent Freelance QA Tester to help us ensure the quality and usability of our web-based SaaS platform. Our product includes a Slack-integrated AI assistant and a web-based account dashboard.

This is a part-time, long-term freelance opportunity (approx. 20 hours/month) – perfect for someone with a strong eye for detail and experience testing modern SaaS tools and integrations.

Tasks

What You’ll Do

Run manual and automated tests on our Slack app and web dashboard
Conduct test cycles 2–4x per week (~1 hour/session) to catch bugs and usability issues
Build and maintain test scripts using tools like Cypress, Playwright, or Selenium
Log bugs with clear repro steps and environment details
Collaborate with our dev team to validate fixes and re-test features
Proactively share UX and performance feedback
Suggest improvements to our QA workflow or tools

Requirements

What We’re Looking For

Proven experience testing web-based SaaS platforms
Experience with Slack app QA (slash commands, bot behavior, Slack API)
Solid background in automated testing (Cypress, Selenium, Playwright, etc.)
Ability to set up and manage your own QA environment
Detail-obsessed with excellent bug documentation skills
Comfortable with short, recurring testing sessions (2–4x/week)

Nice to Have

Experience testing integrations with Slack, MS Teams, or similar tools
Familiarity with API testing (Postman, Insomnia)
Background in usability or accessibility testing
Previous experience with AI tools or remote-first startups
Knowledge of AI automation/testing platforms like Testim or mabl

Benefits

Ready to help us ship high-quality features with confidence? Apply now and let’s build something reliable together.

This is a 100% remote freelance role. Please note: You must be officially deregistered in Germany (no current residence or tax registration)