Quality & Data Intern (m/f/d) – Mandatory Internship / Prácticas

About JawBuddy JawBuddy helps people with jaw pain, teeth grinding and TMJ problems through a guided exercise app. Our app measures jaw movement through the phone camera using computer vision and AR, so users see their progress in real numbers. We are a small, funded health-tech team with paying customers in Germany. Next up: a B2B platform release in early 2027. How this internship works We offer this role in exactly two ways: • Mandatory internship at an EU university: you are enrolled at a university in the EU and your study regulations require an internship. You send us a document from your university that confirms this. Start as soon as possible. • Prácticas at a Spanish university: you are enrolled at a university in Spain, and the internship runs through your university's internship agreement (prácticas extracurriculares with a convenio), full-time or alongside your studies. Start from December 2026. We can't offer working-student contracts, voluntary internships or freelance work. The role 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. You work directly with our CTO and founding engineer. • About 60 % app and computer vision quality: real-world testing, releases, accessibility, performance • About 25 % data quality: making sure analytics data is complete and correct • About 15 % automation with AI: building automated tests and checks, and reviewing what they find 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 What you bring • Enrolled at an EU university with a mandatory internship in your study regulations, or at a Spanish university that signs a convenio for prácticas • Available 20 to 40 hours a week, remote, as your university allows • 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 Nice to have • 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 What we offer • Compensation: €300 per month • 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 • Mentorship: a weekly 1:1 with our CTO • Hours that fit your studies: 20 to 40 hours a week, as your university requires How we hire • Send your CV and your university document (internship requirement, or confirmation that your university can sign a convenio). • A 30-minute call with our team. • A short trial task: we send you a test build of the app, and you spend about 2 hours finding and reporting what's wrong. Use any AI tools you like. • A final conversation, and an offer within a week. Details • Type: mandatory internship (EU university) or prácticas (Spanish university) • Hours: 20–40 per week, depending on your university • Location: remote within the EU • Compensation: €300 per month • Start: as soon as possible; prácticas in Spain from December 2026 Find Jobs in Germany on Arbeitnow