Mobile Software Engineer

About Joko

At Joko, our mission is to we help consumers save time and money when shopping online or in-store. Founded in Paris, Joko is a tech company and certified B Corp with over 105 talents across Paris, Barcelona, and New York (and beyond). More than 6 million users already save money every day at 10,000+ merchants with Joko. Today, Joko is an AI shopping app: with Juno, our shopping assistant, users can find the right product at the best price in only a few seconds.

Our Engineering Team

Our Engineering team excels at solving cutting-edge technical challenges with elegant solutions. With a strong focus on product innovation and design, they are shaping the future of the shopping experience. Software Engineers in the Engineering team work hand-in-hand with the Product team, from exploration, design, and roadmap prioritization to implementation, and deployment in production.

What you will do

As our Mobile Engineer, you will own meaningful parts of our mobile application in production, from technical design to delivery and continuous improvement, while collaborating closely with the wider engineering team.

• Mobile architecture & development : 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.
• Codebase modernization : Incrementally improve an existing React Native codebase by adopting modern patterns, best practices, and platform capabilities, balancing long-term quality with short-term product needs.
• Performance & user experience : Measure, profile, and optimize mobile performance (startup time, rendering, memory, caching), proactively preventing regressions and maintaining a high-quality user experience at scale.
• Tooling & developer experience : Improve mobile developer productivity by evolving tooling, build systems, debugging workflows, and automations, ensuring fast feedback loops and reliable day-to-day development.
• Mobile platform expertise : Provide deep React Native expertise across the team by reviewing designs and implementations, challenging assumptions, and driving better technical solutions in production.
• Release & quality processes : Improve and maintain mobile CI/CD pipelines, testing strategies, and release automation for both iOS and Android.
• API & data integration : Collaborate closely with backend teams to design and integrate robust APIs and data flows, and occasionally contribute targeted improvements to backend code to support mobile product needs.
• Collaboration & mentorship : Participate in technical discussions, review code, and help raise mobile engineering standards across the team.

At Joko, we believe that flexibility and trust are essential.

• Flexible remote : 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 : Want to spend a month in Italy while working? You can work from most countries in the world for up to 3 months per year.
• Top-market compensation
• Equity for everyone with the chance to own a piece of what you build
• Half-day each week dedicated to leveling up with AI by exploring new tools, iterating hard, and sharpening your skills
• Yearly offsite in amazing locations and budget for team-building events & monthly in-person gatherings
• Contribution to your ClassPass subscription
• 8-week leave paid 100% for the second parent
• …and much more, check the full list here

• Experience: 5+ years of mobile development experience, with clear expertise in React Native. You've operated at a senior or staff level and you're ready to own meaningful parts of a production app end-to-end.
• Mobile expertise: Deep React Native expertise, with a strong understanding of mobile architectures and performance tradeoffs.
• Technical excellence : Strong understanding of mobile architectures and performance tradeoffs, with experience building reliable, data-driven applications in production.
• Product-minded : Strong sensitivity to user experience, performance metrics, and real-world usage at scale.
• Problem solver : Comfortable working in complex, evolving codebases, with the patience and pragmatism to improve them incrementally.
• Mobile tooling & delivery : Experience with mobile CI/CD, release processes, testing, and platform-specific constraints (iOS & Android).
• Collaboration : 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.
• Languages : Fluent in English, both written and spoken. French is not required.