Senior Mobile React Native Developer

Hays IT Contracting is a cooperation based on B2B rules. We connect IT specialists with the most interesting, technological projects on the market. For our client, a technology company carrying out a technology modernization project for investment product information solutions, we are currently looking for a Specialist for the position of React Native Developer.

Service delivery model: 100% remote Rate: 100–175 PLN/h net (+ VAT) Cooperation: Until the end of June 2027, with a possibility of extension Cooperation type: B2B, through Hays Poland Language: English, B2+/C1 Additional benefits: Luxmed, MultiSport Equipment: Provided by the client

Project Description The project focuses on the technological modernization of solutions supporting the presentation of investment product information across web and mobile channels. The objective is to replace legacy solutions with a modern platform that is easier to maintain while ensuring continuity of existing services. The scope includes React Native mobile applications for iOS and Android, integration with backend services, presentation of investment and product data, and migration of legacy solutions as part of broader re-platforming activities.

Scope of services

• Develop React Native mobile applications for iOS and Android.
• Integrate applications with GraphQL/Apollo and REST APIs.
• Create screens presenting investment and product data, charts, and PDF documents.
• Integrate native modules and device-specific capabilities and troubleshoot related issues.
• Create unit, integration, and end-to-end tests.
• Monitor applications and troubleshoot production issues using observability tools.
• Support the migration of legacy solutions to React Native and broader re-platforming activities.
• Deliver consistent functionality across Web and Mobile channels.

Required competencies

• Experience with React Native, React, and TypeScript (min. 3 years of experience)
• Experience with iOS and Android application development.
• Knowledge of the Node.js / JavaScript ecosystem.

Also

• Experience with GraphQL, Apollo Client, REST APIs, GraphQL Code Generator, and Zod.
• Experience with React Native Reanimated, React Native Gesture Handler, NativeWind / Tailwind CSS, and React Hook Form.
• Experience with SVG, charting, WebView, and PDF/document handling.
• Experience with device permissions and native device capabilities.
• Experience integrating and troubleshooting native iOS and Android modules.
• Experience with React Native code generation and native modules.
• Experience with Async Storage, network connectivity, and file/blob handling.
• Experience with Firebase, Firebase Crashlytics, Braze, Grafana, and LaunchDarkly.
• Experience with Jest, React Native Testing Library, MSW/API mocking, and mobile application end-to-end testing.
• Experience with Storybook, Yarn, Metro, Babel, ESLint / Prettier, Git, and CI/CD.
• Experience working with large, modular, or monorepo mobile codebases.

Cooperation process

• Profile and experience review by the Hays team
• A conversation with a Hays consultant about the project and scope of services
• A technical meeting with project representatives, 1 stage
• Agreement on cooperation terms
• Welcome to the project!

The cooperation is carried out between independent businesses (B2B model) and covers the performance of services within the agreed project scope. The Contractor independently organizes and manages the manner in which the services are performed, taking into account the project requirements, security obligations, and the necessary communication with the client. Any information regarding location, availability, or project meetings is provided solely for organizational purposes and shall not be construed as creating an employment relationship, employer-like supervision, or performance of work under the direction or control of the client.

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#1202349 - Aleksandra Sobkiewicz