Mobile/Frontend AI Software Engineer (all)

Personio; München; On-site; EUR 110,000 - 160,000; Full time

Job summary

Personio in Munich is seeking a Mobile/Frontend AI Software Engineer to build user-facing solutions for our digital health platform. You will own and design client-side applications, shaping frontend strategy and delivering seamless experiences in collaboration with backend teams.

You will develop responsive mobile-first interfaces with React and React Native, optimize performance, integrate with APIs, and contribute to CI/CD and security practices.

Qualifications

• Bachelor’s degree in CS/SE or equivalent work experience.
• 7+ years of frontend-focused product development.
• Experience with growth techniques and testing frameworks.
• Experience with performance optimization and monitoring tools.
• Experience with mobile-first development and responsive design.
• Strong frontend expertise in React/React Native.

Responsibilities

• Own and build responsive mobile-first interfaces using React and React Native.
• Drive modern UI/UX designs with focus on accessibility and performance.
• Integrate frontend with backend APIs and services.
• Optimize performance and implement efficient state management.
• Develop cross-platform mobile apps using Expo and React Native.

Skills

JavaScript/TypeScript

React

React Native

CSS

Expo

Webpack/Vite

AI-assisted development

Education

Bachelor’s degree in Computer Science, Software Engineering, or related field

Tools

Expo

CI/CD tooling

AWS/GCP

Job description

Who we are looking for

We are seeking a Mobile/Frontend AI Software Engineer to join our engineering team to build user-facing solutions that power our digital health platform and help the platform grow. This role focuses on owning, designing, and implementing client-side applications, shaping the frontend strategy while creating seamless user experiences in close collaboration with backend services and APIs.

Your mission

Development

• Own and build responsive and intuitive mobile-first user interfaces using React and React Native
• Drive the implementation of modern UI/UX designs with strong attention to accessibility and performance
• Integrate frontend applications with backend APIs and services
• Optimize application performance and implement efficient state management
• Develop cross-platform mobile applications using Expo and React Native

Engineering Tools

• AI-assisted development: Ability to effectively use AI tools in daily development work

System Architecture & Integration

• Own and shape frontend architectures that scale from web to mobile
• Integrate third-party APIs and services
• Implement real-time features using WebSockets

Infrastructure & Deployment

• Work with cloud-based environments (AWS, GCP) to support frontend applications
• Collaborate on CI/CD pipelines impacting frontend delivery
• Monitor application performance and troubleshoot frontend-related issues
• Ensure security best practices in frontend implementation

Collaboration & Quality

• Take full ownership of the quality of the produced frontend outcome
• Partner closely with product managers, designers, and other engineers to shape frontend solutions
• Set, uphold, and evolve frontend quality standards through code reviews
• Write comprehensive technical documentation

Your background

Education & Experience

• Bachelor’s degree in Computer Science, Software Engineering, or related field OR equivalent work experience with a strong technical portfolio
• 7+ years of product development experience with a strong frontend focus
• Experience with growth techniques
• Experience with testing frameworks (unit, integration, end-to-end)
• Experience with performance optimization and monitoring tools
• Experience with mobile-first development and responsive design

Frontend Technical Skills

• JavaScript / TypeScript: Expert-level proficiency in modern JavaScript (ES6+)
• React: Strong experience with React, hooks, context API, and state management
• CSS / Styling: Proficiency in modern CSS, styled-components, or similar
• Build Tools: Webpack, Vite, or similar bundling tools
• Expo: Familiarity with Expo framework and development workflow
• React Native: Experience building cross-platform mobile applications

Soft Skills

• Strong problem-solving and analytical abilities
• Good communication and teamwork abilities
• Deep product- and customer-centric mindset

Preferred Qualifications

• Understanding of accessibility standards
• Familiarity with design systems and component libraries
• Experience with mobile-specific features (push notifications, offline storage)
• Knowledge of mobile performance optimization

Why us?

• Top Tech company in Digital Health:A dynamic, high-growth environment where everyone in the team depends on each other's performance. You can see your impact. We learn and develop quickly.

• True impact in healthcare: What we are building with our brite platform is unique worldwide, ambitious, and could have a huge impact on billions of people who are ill or interested in health.
• International team: Join colleagues from 14+ nationalities, united by a shared vision.

Hiring Process

• Recruiter Screening:Technical phone/video introductory and experience call.
• Leadership Interview:Discussion focused on leadership principles, values, and cultural fit.
• Technical Deep Dive:Live coding session covering React, React Native, and Expo.