AI Engineering Internship — Build AI-Powered Mobile Apps (Zurich)

Moonfire; Zürich; On-site; CHF 56,000 - 130,000; Full time

Job summary

Bloom is a YC-backed startup in Zurich building the first AI app builder, enabling users to craft full-stack native apps from their phones, publish to app stores, and share apps instantly. You will join as an AI Engineering Student Intern for Winter or Summer 2026, tackling real problems at the intersection of AI, code generation, and mobile creation.

You’ll work on AI systems, backend infrastructure, and tooling, with mentorship from senior engineers, and a path to full-time opportunities after

Qualifications

• Love to build — weekends, hackathons, side projects.
• High agency and curiosity; move fast and learn faster.
• Care about the experience of people trying to build apps for the first time.
• Fluent in TypeScript and comfortable across the stack.

Responsibilities

• Build and improve AI systems that can design, code, and ship complete mobile apps.
• Develop and scale backend infrastructure that powers thousands of app builds every week.
• Create beautiful, intuitive tools that make complex software creation feel effortless.
• Build internal systems, dashboards, and agents that help us move faster as a team.
• Explore new approaches to app deployment, testing, and instant sharing.

Skills

TypeScript

Full stack

Tools

React Native

Expo

Swift

Kotlin

Convex

AI SDK

Model fine-tuning

Evals

Job description

Bloom is a YC-backed startup in Zurich building the first AI app builder, enabling users to craft full-stack native apps from their phones, publish to app stores, and share apps instantly. You will join as an AI Engineering Student Intern for Winter or Summer 2026, tackling real problems at the intersection of AI, code generation, and mobile creation.

You’ll work on AI systems, backend infrastructure, and tooling, with mentorship from senior engineers, and a path to full-time opportunities after