Mobile Application Developer

Role: React Native- Senior Specialist - Software Engineering

Location: Warsaw

Employment Type: B2B

Experience: 8+ Years

Salary/Pay Rate: market rate

Work Mode: hybrid (3 days from the Client office in Warsaw)

Language: English (Mandatory)

Role Purpose

As a Mobile Developer Senior Developer you will be responsible for architecting and building high performance enterprise grade mobile applications within the Experience Engineering and Digital Emerging Tech portfolios This role focuses on leveraging React Native and the Salesforce Mobile SDK to deliver offline first data rich applications for a global FMCG leader You will integrate advanced capabilities like OpenCV for image processing and manage complex local data using Smart Store ensuring a seamless mobile experience within a hyperscale heavy application landscape

Key Responsibilities

CrossPlatform Development Design and develop robust mobile applications for iOS and Android using React Native

Salesforce Integration Implement and customize mobile solutions using the Salesforce Mobile SDK ensuring seamless synchronization between mobile devices and Salesforce clouds

Offline Data Management Architect OfflineFirst capabilities using Smart Store DB Salesforce SmartStore and SmartSync to manage complex local data persistence and synchronization

Computer Vision Integration Implement image processing and computer vision features eg shelf scanning asset recognition or document processing using OpenCV within the mobile environment

State Management Manage complex application states and data flows using Redux or Redux Toolkit

Experience Engineering Build highfidelity responsive UIs that provide superior user journeys for fieldforce users and consumers adhering to global brand standards

Version Control CICD Manage source code branching strategies and pull requests using GitHub integrated with automated mobile build pipelines

Emerging Tech Pilots Support Digital Emerging Technology initiatives by prototyping mobilefirst AIML features and integrating with hyperscalerhosted APIs eg GCP Vision AI

Senior Developer Specifics Lead technical design for mobile modules perform rigorous code reviews optimize app performance memorybattery and mentor junior developers in mobile best practices

Primary Skills/ Must Have

Core Framework Expert level proficiency in React Native JavaScript TypeScript

Salesforce Mobile Handson experience with Salesforce Mobile SDK and Smart Store DB

State Management Deep understanding of Redux for enterprise scale mobile apps

Computer Vision Experience integrating OpenCV or similar CNative modules into React Native applications

Version Control Advanced proficiency in GitHub workflows and Gitbased collaboration

Secondary Skills/ Good to Have

Native Modules Ability to write Native Bridges in Swift ObjectiveC iOS or Java Kotlin Android

Hyperscaler Exposure Experience connecting mobile apps to GCP Azure backend services Cloud Run App Services

Salesforce Platform Familiarity with Apex SOQL and Salesforce Lightning Web Components LWC

Mobile Security Knowledge of OAuth2 Certificate Pinning and secure local storage patterns

FMCG Domain Understanding of retail execution van sales or fieldforce automation workflows

Skills

Mandatory Skills : React Native