9 months ago
Paris, France or Barcelona, SpainSenior / Staff+
Responsibilities
- Own meaningful parts of the production mobile application from technical design through delivery and continuous improvement.
- Define and evolve React Native architecture and develop, refactor, and maintain scalable mobile features.
- Modernize the existing React Native codebase using modern patterns, best practices, and platform capabilities.
- Measure, profile, and optimize startup time, rendering, memory, caching, and overall mobile user experience.
- Improve mobile tooling, build systems, debugging workflows, automation, and developer productivity.
- Provide React Native technical expertise through design and code reviews and drive better production solutions.
- Maintain and improve mobile testing strategies, release processes, and CI/CD pipelines for iOS and Android.
- Collaborate with backend teams to design and integrate APIs and data flows and occasionally improve backend code for mobile needs.
- Participate in technical discussions, review code, mentor colleagues, and raise mobile engineering standards.
- Collaborate with Product Managers and Product Designers to deliver high-quality mobile experiences.
Requirements
- 5+ years of mobile development experience.
- Clear expertise in React Native and deep understanding of mobile architectures and performance tradeoffs.
- Experience operating at a senior or staff level and owning meaningful parts of a production application end to end.
- Experience building reliable, data-driven applications in production.
- Strong product mindset and sensitivity to user experience, performance metrics, and real-world usage at scale.
- Comfort working in complex, evolving codebases and improving them incrementally.
- Experience with mobile CI/CD, release processes, testing, and iOS and Android platform-specific constraints.
- Ability to collaborate effectively with engineering, Product Managers, and Product Designers.
- Fluent written and spoken English; French is not required.
Benefits
- Flexible remote work in France and Spain, with office or home working options in Paris and coworking access and budget elsewhere.
- Ability to work from most countries for up to 3 months per year.
- Equity for everyone.
- Half a day each week dedicated to learning and experimenting with AI tools.
- Yearly offsite, team-building budget, and monthly in-person gatherings.
- Contribution toward a ClassPass subscription.
- Eight weeks of fully paid leave for the second parent.
Tech Stack
iOSReact Native
Categories
Mobile
About Joko
Joko builds an AI shopping app that helps consumers find the right product at the best price, track prices, and earn cashback online and in-store. It powers recommendations with a large product catalog and shopping data, and monetizes through merchant partnerships and affiliate commissions. Founded in 2018 and headquartered in Paris, the privately held B Corp reports over 6 million users shopping across 10,000+ merchants.