[Hiring] Quality Assurance Intern @JawBuddy

Role Description

You make sure our app and our numbers can be trusted, and you use AI to do it at a scale one person couldn't before. AI handles the repetitive checks; you handle what needs human judgment, like testing our camera features in the real world.

• Work directly with our CTO and founding engineer (~12h)
• Data quality (~5h)
• Automation with AI (~3h)

What you'll do

• Test our computer vision in the real world
• Test camera-based jaw tracking across devices, lighting, faces, glasses and beards
• Find the conditions where measurements break, and help the team fix them
• Own app quality
• Own the release checklist for every iOS and Android build
• Test accessibility, German texts, performance, slow networks and offline use
• Write clear bug reports in Linear, with steps to reproduce and evidence
• Keep test evidence documented, as our product requires
• Keep our data trustworthy
• Review the daily data-quality checks across Amplitude, AppsFlyer, RevenueCat and BigQuery, and investigate what they flag
• Find out why two tools disagree, and get it fixed
• Keep our tracking plan in sync with what the app actually sends
• Automate with AI
• Use AI tools to write automated tests (Maestro), generate test cases and run checks
• Review what AI produces: you are the person who decides whether it is right

Qualifications

• Enrolled student, available 15–20 hours a week for at least 12 months
• Fluent in English (the app is in German; the team works in English)
• Solid SQL
• A structured, curious way of testing: you find the edge cases others miss
• You already use AI tools (Claude, ChatGPT, Cursor or similar) in your daily work

Requirements

• Test automation (Maestro, Detox, Appium)
• Accessibility (WCAG, VoiceOver, TalkBack)
• Product analytics (Amplitude, Mixpanel, GA4) or attribution (AppsFlyer)
• dbt or Dataform, Git, Python
• Interest in computer vision, health tech or medical device quality

Benefits

• Real ownership: You own the release checklist, and when you say a build isn't ready, we listen.
• Work with AI from day one: You learn how to run quality at scale with AI, a skill few people have yet.
• Rare experience: Computer vision, health data and quality in a health product, all in one role.
• A path to full-time: After graduation, this role can grow into a Junior QA Engineer or Data Analyst position.
• Mentorship: A weekly 1:1 with our CTO.
• Fair pay and hours that fit around your lectures and exams.

Company Description

Wir glauben, dass Heilung selbstbestimmt passieren sollte. Aber nie allein. JawBuddy ist die erste personalisierte App zur digitalen Selbsttherapie bei Bruxismus und CMD. Als CE-gekennzeichnetes Medizinprodukt kombiniert die App Augmented Reality mit medizinischen Algorithmen: Sie leitet Patienten präzise durch jede Bewegung von Kiefer, Nacken und Körperhaltung – wie ein Therapeut vor Ort. So werden Verspannungen gelöst und gesunde Bewegungsmuster nachhaltig aufgebaut.

Entwickelt von unserem Expertenteam in Leipzig bringt JawBuddy professionelle Kiefertherapie direkt nach Hause. Mit bereits über 2.000 aktiven Nutzer:innen schließen wir aktuell unsere Pre-Seed-Runde mit führenden Healthtech-VCs und erfahrenen Business Angels ab.