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# Mobile Software Engineer (Senior/Staff Level)

- **Company:** Joko
- **Location:** Barcelona, Spain
- **Contract:** Temporary contract
- **Skills:** Artificial Intelligence, Application Release Automation, Mobile Application Development, Code Review, Continuous Integration, Data Integration, Software Debugging, Mobile Application Software, Data Streaming, Strategies of Testing, ReactJS, Backend, Build Tools, React Native, Restful APIs, Code Restructuring
- **Published:** July 31, 2026
- **Apply:** https://www.buscojobs.com.es/mobile-software-engineer-senior-staff-level-en-barcelona-ID-364286107

## About the Role

across the team.Who we're looking forExperience: 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.Our perksAt Joko, we believe that flexibility and trust are essential.
Our work environment reflects this through: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.

## Description

At Joko, we help consumers shop smarter.Our mission is to revolutionize shopping, empowering people to find what they need, make informed decisions, and save money.¿Es este su próximo empleo?Descúbralo leyendo la descripción completa a continuación y no dude en enviar su candidatura.Founded in Paris, Joko is a tech company and certified B Corp with over 105 talents across Paris, Barcelona, and New York.More than 6 million users already save money every day at 10,000+ merchants with Joko.From cashback and automatic coupons to price alerts and carbon tracking, we keep expanding our products to make shopping smarter.We're now building an AI?powered shopping assistant to help users find the best products by price, quality, and environmental impact.Having reached profitability in our core market, we're now scaling globally with a strong focus on the US.It's still day 1, come build the future of shopping with us!This position is remote-friendly (France and Spain).Our Engineering teamOur Engineering team excels at solving cutting?edge technical challenges with elegant solutions.With a strong focus on product innovation and design, they shape the future of the shopping experience and aim to positively impact the everyday lives of hundreds of millions of users worldwide.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.At Joko, we have firsthand experience that teams with engineers who possess a diverse range of skills, and where engineering and product collaborate closely, deliver a truly delightful and innovative user experience.The Engineering team is currently growing fast to continuously innovate on all parts of our product and tech stack and to empower the revolution of the way people shop online.What you will doMobile 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.Who we're looking forExperience: 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.Our perksAt Joko, we believe that flexibility and trust are essential.Our work environment reflects this through: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.xqbhyrx Work from anywhere: You can work from most countries in the world for up to 3 months per year.On top of that, we offer plenty of perks:Top?market compensationEquity for everyone with the chance to own a piece of what you buildHalf?day each week dedicated to leveling up with AI by exploring new tools, iterating hard, and sharpening your skillsYearly offsite in amazing locations and budget for team?building events & monthly in?person gatheringsContribution to your ClassPass subscription8?week leave paid 100% for the second parent...and much more, check the full list#J-*****-Ljbffr


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