Mobile Software Engineer (senior/staff level)

Joko
Paris, Barcelona
Workplace: OnsiteFull timeFunction: Data Analytics & Business IntelligenceExperience: 5+ yearsSkills: ["Communication","Problem-solving","Mentorship","Collaboration","Leadership"]

Lead and own critical parts of the mobile app in production, shaping React Native architecture and delivering scalable, high-performance features. Collaborate with product and backend teams to modernize code, optimize performance, and strengthen CI/CD and release processes for iOS and Android, while mentoring engineers and ensuring a quality mobile experience at scale.

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Joko
Joko
7 months ago

Mobile Software Engineer (senior/staff level)

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 2 hours agoStatus: Live

Job Summary

Lead and own critical parts of the mobile app in production, shaping React Native architecture and delivering scalable, high-performance features. Collaborate with product and backend teams to modernize code, optimize performance, and strengthen CI/CD and release processes for iOS and Android, while mentoring engineers and ensuring a quality mobile experience at scale.
Location: Paris, Barcelona
Workplace: Onsite
Employment Type: Full time
Job Function: Data Analytics & Business Intelligence

Key Responsibilities

  • •Mobile architecture & development: Define and evolve the React Native architecture, design, develop, and refactor features with a focus on scalability, maintainability, and performance.
  • •Codebase modernization: Improve an existing React Native codebase with modern patterns and platform capabilities.
  • •Performance & user experience: Measure, profile, and optimize startup time, rendering, memory, and caching to maintain a high-quality UX at scale.
  • •Tooling & developer experience: Enhance tooling, build systems, debugging workflows, and automations to accelerate day‑to‑day development.
  • •Release & quality processes: Improve mobile CI/CD pipelines, testing strategies, and release automation for iOS and Android.

Pay and Benefits

Perks:Remote WorkParental LeaveCoworking BudgetClasspassOffsite Budget

Key Requirements

  • •5+ years of mobile development experience with deep expertise in React Native
  • •Strong understanding of mobile architectures and performance tradeoffs
  • •Experience building data-driven, production-grade mobile applications
  • •Proven ability to work in a collaborative, product-minded environment with cross-functional teams
  • •Experience with mobile CI/CD, release processes, testing, and platform constraints (iOS & Android)
Experience:5+ yearsE-commerce
Skills:CommunicationProblem-solvingMentorshipCollaborationLeadership
Languages:English
Tech Stack:React NativeIOSAndroidCI/CDDebuggingPerformanceMemoryAPIs

Company Brief

Joko
Joko is a Paris-based shopping and cashback app that turns payment cards into multi-brand loyalty cards, offering automatic cashback, coupons and shopping insights to users while providing merchants with acquisition and retention tools powered by payment data and AI.
Industry: Payments
Company Size: Medium (51 to 250 employees)
Growth: Growth Stage Startup
Funding: Series A
Headquarters: Paris, France
Founded: 2018
Glassdoor
Glassdoor: 4.5
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