Joko
11 - 50 employees
Founded 2018
🛍️ eCommerce
💸 Finance
👥 B2C
eCommerce • Finance • B2C
Joko is a mobile application that enhances users' purchasing power by offering cash back rewards and automatic coupon codes on everyday purchases. With over 4 million members, the app allows users to earn cash back effortlessly as they shop at their favorite retailers. Joko simplifies the purchasing experience, ensuring that members never pay more than necessary for their purchases while accumulating rewards quickly.
Staff Mobile Engineer
🕒 January 22
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Joko
11 - 50 employees
Founded 2018
🛍️ eCommerce
💸 Finance
👥 B2C
eCommerce • Finance • B2C
Joko is a mobile application that enhances users' purchasing power by offering cash back rewards and automatic coupon codes on everyday purchases. With over 4 million members, the app allows users to earn cash back effortlessly as they shop at their favorite retailers. Joko simplifies the purchasing experience, ensuring that members never pay more than necessary for their purchases while accumulating rewards quickly.
📋 Description
• Own meaningful parts of our mobile application in production, from technical design to delivery and continuous improvement. • Contribute to the definition and evolution of our React Native architecture, while designing, developing, and refactoring features in our mobile application, with a strong focus on scalability, maintainability, and performance. • Incrementally improve an existing React Native codebase by adopting modern patterns, best practices, and platform capabilities. • Measure, profile, and optimize mobile performance (startup time, rendering, memory, caching). • Improve mobile developer productivity by evolving tooling, build systems, debugging workflows, and automations. • Provide deep React Native expertise across the team by reviewing designs and implementations. • Improve and maintain mobile CI/CD pipelines, testing strategies, and release automation for both iOS and Android. • Collaborate closely with backend teams to design and integrate robust APIs and data flows.
🎯 Requirements
• Strong experience in mobile development, with a clear expertise in **React Native** (typically 5+ years). • Strong understanding of mobile architectures and performance tradeoffs, with experience building reliable, data-driven applications in production. • Strong sensitivity to user experience, performance metrics, and real-world usage at scale. • Comfortable working in complex, evolving codebases, with the patience and pragmatism to improve them incrementally. • Experience with mobile CI/CD, release processes, testing, and platform-specific constraints (iOS & Android). • Able to work effectively within a broader engineering team, and collaborate closely with Product Managers and Product Designers to turn product ideas into high-quality mobile experiences. • Fluent in English, both written and spoken. French is not required.
🏖️ Benefits
• Flexible remote *(only to specific fully remote positions)*: If you live in Paris, you can choose to work from our office or from home with no constraints. If you live elsewhere, we can provide access to a coworking space and a coworking budget. • Work from anywhere *(full-time only)*: Want to spend a month in Italy while working? Full-time employees can work from most countries in the world for up to 3 months per year. • 🇺🇸 After 4 years, spend one month in our New York office • 🌴 Yearly offsite in amazing locations and budget for team-building events & quarterly in-person gatherings • 💪 Contribution to your ClassPass subscription • 🍼 8-week paid parental leave • …and much more, check the full list here!
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