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Open nowPosted 292 days ago

Full Stack AI Engineer (all) - React / NodeJS

xo-life3 open roles

Where
Berlin
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Your applicationOpen nowFull Stack AI Engineer (all) - React / NodeJSxo-life · Berlin

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The clock on this job

Early applications get read.

8.0% of postings close within 7 days. Measured by our own scanner across the market.

Share of postings closed within
  1. 1.6%1 day
  2. 3.6%3 days
  3. 8.0%7 days
  4. 15.0%14 days
  5. 34.2%30 days
This job: posted 292 days ago

The posting

Who we are looking for

We are seeking a versatile Full Stack AI Engineer to join our engineering team to build end-to-end solutions that power our digital health platform and help the platform to grow. This role involves designing and implementing both client-side and server-side applications, creating seamless user experiences while ensuring robust backend infrastructure.

Your mission

Development

  • Build responsive and intuitive mobile first user interfaces using React and React Native
  • Implement modern UI/UX designs with attention to accessibility and performance
  • Integrate frontend applications with backend APIs and services
  • Design and implement scalable backend architectures
  • Optimize application performance and implement efficient state management
  • Develop cross-platform mobile applications using Expo and React Native
  • Build data processing pipelines and background jobs

Engineering Tools

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

Database & Data Management

  • Design and optimize database schemas (MongoDB, Redis)
  • Implement data migration strategies and ensure data integrity
  • Monitor and optimize database performance

System Architecture & Integration

  • Design full-stack architectures that scale from web to mobile
  • Integrate third-party APIs and services
  • Implement real-time features using WebSockets

Infrastructure & Deployment

  • Deploy and manage applications in cloud environments (AWS, GCP)
  • Implement containerization with Docker and Kubernetes
  • Monitor system performance and troubleshoot issues across the stack
  • Ensure security best practices and compliance
  • Build and maintain CI/CD pipelines

Collaboration & Quality

  • Be fully responsible for the quality of the produced outcome
  • Work closely with product managers, designers, and other engineers
  • Participate in code reviews and maintain code quality standards
  • Write comprehensive technical documentation

Your background

Education & Experience

  • Bachelor's degree in Computer Science, Software Engineering, or related field OR equivalent work experience with strong technical portfolio
  • 7+ years of full-stack product development experience
  • 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

Backend Technical Skills

  • Node.js: Strong server-side JavaScript/TypeScript development
  • Express.js: Experience building RESTful APIs and web services
  • Databases: MongoDB (primary), Redis for caching
  • API Development: RESTful APIs
  • Authentication: JWT, OAuth, session management

Soft Skills

  • Strong problem-solving and analytical abilities
  • Good communication and teamwork abilities
  • Eagerness and passion to work in agile and lean development environments
  • Deep product and customer-centric — always advocate for user needs and deliver delightful, impactful experiences

Preferred Qualifications

  • Experience with healthcare or regulated industry applications
  • 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: We are 14 nationalities working across Europe. We bring different mentalities and cultures with us, but we are all aligned towards our grand 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, Node.js, and database design
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