FullStack Mobile Engineer

GoodHabitz

Senior Mobile Engineer at GoodHabitz focusing on mobile app rebuilding and user experience. Collaborating closely with teams to define and develop intuitive, high-quality apps.

Posted 5/6/2026full-timeMadrid • 🇪🇸 SpainMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AndroidFlutteriOSReactReact Native

About the role

Key responsibilities & impact

Design, build, and launch mobile features from concept to release on iOS, Android, or both
Help shape mobile architecture, including navigation patterns, state management, and offline strategies
Own your work end-to-end: from code and testing to accessibility and app store releases
Build and improve CI/CD pipelines and release workflows for mobile
Take ownership of performance and reliability—startup time, crashes, and smooth interactions matter
Review code with a focus on consistency, scalability, and shared learning across the team
Communicate technical decisions clearly and help teams align when opinions differ

Requirements

What you’ll need

5+ years of experience in mobile engineering, with strong hands-on expertise in React Native
Experience with native iOS/Android or other frameworks (like Flutter or KMP) is a plus—but React Native is your home base
A product mindset—you understand how your work translates into user value and business impact
Experience collaborating closely with Product, Design, and UX teams
Strong understanding of mobile fundamentals: app lifecycle, background processing, push notifications, deep linking, and platform guidelines
Experience with mobile CI/CD, automated testing, and app store release processes
Confidence working with APIs from a mobile perspective—you know when to challenge backend decisions for a better user experience
Experience using LLM tools (such as Claude Code, Copilot, or Cursor) in your workflow—for coding and beyond
A pragmatic approach: you balance strong opinions with collaboration and know when to prioritize progress over perfection

Benefits

Comp & perks

💰 Competitive salary that reflects your impact
🏖️ 25 days of paid holiday to recharge
💻 Flexible working setup with the tools you need
📈 Unlimited access to GoodHabitz learning resources to keep growing
🌍 An international, diverse team full of different perspectives and ideas
🎉 Team events, outings, and creative sessions that bring energy to your workweek
🤝 A culture built on ownership, trust, and continuous improvement

ATS Keywords

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Hard Skills & Tools

mobile engineeringReact NativeiOS developmentAndroid developmentFlutterKMPCI/CDautomated testingapp store release processesAPI integration

Soft Skills

product mindsetcollaborationcommunicationpragmatic approachproblem-solvingteam alignmentcode reviewownershipadaptabilityuser experience focus