Tech Lead Mobile

Project overview

Context

A major insurance company is undertaking a complete redesign of its mobile application, in native iOS and Android. The most critical user journeys (subscription, strong authentication, claim declaration with photo capture, payment) require a level of fluidity, system integration, and performance mastery that the company does not wish to delegate to an abstraction layer.

This redesign is based on a mobile BFF (Backend For Frontend) to be built, which absorbs the heterogeneity of the historical platform and exposes API contracts tailored for mobile use to both applications.

Missions

Tools & Environment

• Be the guarantor of the application architecture for both platforms and their convergence: same patterns, same conventions, same quality guarantees, without denying what pertains to the specific idioms of each ecosystem.
• Drive structuring decisions on the iOS side and their equivalents on the Android side.
• Keep the applications aligned with Apple's and Google's annual evolutions (new OS versions, deprecations, publication requirements) and anticipate their impacts rather than suffering them.
• Be the guarantor of the actually perceived experience.
• Design, develop, and maintain the mobile BFF in a technical environment (.NET and C# on Azure), with the same level of requirement as the application code.
• Be the guarantor of the technical-functional boundary of the BFF: aggregation, adaptation, and optimization for mobile use, without absorbing business logic that belongs to the domains.
• Be the guarantor of contract backward compatibility, in a context where several versions of the application coexist durably on customer devices.
• Define with the domain teams the API contracts that the applications need, champion the mobile need upstream of their decisions, and contribute to the convergence of the platform towards business-oriented APIs.
• Secure the predictability of publications: controlled cadence on the App Store and Play Store, ability to deliver and disable a feature without depending on a validation cycle (feature flags, progressive rollouts).
• Be the guarantor of the build chain and the coordination of tests for both applications and the BFF, and of end-to-end observability (crash reporting, correlated traces from the device to upstream APIs) allowing incident diagnosis.
• Support iOS and Android engineers in their skill development (demanding code reviews, pair programming, knowledge transfer) and disseminate the company's mobile standards.
• Translate platform constraints into understandable trade-offs for Product, Design, and Marketing teams, and inform their prioritization decisions.
• Mobile: Swift, Swift UI, Webview, Kotlin, Flutter, React Native
• Hosting: Microsoft Azure
• Backend: .NET and C# ecosystem
• APIs: RESTful today organized around technical primitives, engaged in a rationalization trajectory towards business-oriented APIs
• CI/CD: Azure DevOps (to be built, consolidated for mobile)
• Observability: Dynatrace, ELK

Project details

• Start: flexible
• Remote: hybrid
• Location: Paris, France, FR
• Rate: 66-71 EUR/h
• Languages: French