Senior flutter developer

Senior Flutter Developer - POS SystemPosition OverviewWe are seeking an experienced Senior Flutter Developer to lead development efforts on the ELERA POS (Point of Sale) Flutter application. This role requires deep expertise in Flutter/Dart development, architectural design skills, and the ability to mentor junior developers while delivering high-quality, scalable solutions for a complex enterprise POS system.About the Project· Project: ELERA POS Flutter Application (enterprise-grade POS system)· Platform: Multi-platform (Windows Desktop primary, Android secondary)· Architecture: Multi-module, feature-based architecture with clean code principlesKey ResponsibilitiesTechnical Leadership· Design and develop scalable Flutter solutions for complex POS features· Lead technical discussions with external stakeholders and local team.· Review and approve code from team members, ensuring quality and consistency· Identify and resolve technical debt and performance bottlenecks· Participate in planning and estimations.· Provide technical guidance on complex problem-solving· Development & Implementation· Develop complex features and critical system components· Integrate with backend APIs and real-time communication systems (MQTT)· Optimize application performance for desktop and mobile platforms· Handle multi-window desktop application requirements· Set up and maintain CI/CD pipelines in GitLab· Debug and resolve critical production issuesRequired Technical SkillsCore Expertise (Must Have)· Dart Language: Expert-level knowledge of Dart 3.0+ features and best practices· State Management: Deep expertise in Riverpod (2.x) including code generation· Architecture: Strong understanding of clean architecture, SOLID principles, DDD· Design Patterns: Factory, Repository, Singleton, Observer, and other GoF patternsFlutter Ecosystem (Advanced)· Navigation: Advanced go_router implementation with deep linking and guards· HTTP/API: Expert-level REST API integration using Dio with interceptors and retry logic· Code Generation: Build Runner, Freezed, JSON Serializable, Riverpod Generator· Real-time Communication: MQTT client implementation and message handling· Local Storage: Secure storage, SharedPreferences, encryption (encrypt package)· Responsive UI: ScreenUtil, responsive_builder for multi-device layoutsPlatform-Specific Skills· Desktop Development: Window Manager, multi-window support, screen retrieval· Mobile Development: Android and iOS platform-specific implementationsTesting & Quality· Testing Frameworks: flutter test, Mockito, integration test, golden tests· TDD/BDD: Test-driven or behavior-driven development practices· Code Quality: Linting, static analysis, code coverage tools· Debugging: Advanced debugging with Flutter DevTools, performance profilingDevOps & Tools· SDD or AI-DLC methodologies for software design and development.· Git/GitLab: Advanced Git workflows, branching strategies, cherry-picking, rebasing· CI/CD: GitLab CI/CD pipeline configuration and optimization· Build Systems: Flutter build process, flavors, custom build scripts (PowerShell)· Package Management: Dependency management, versioning, conflict resolutionAdditional Technical Knowledge· UI/UX: Strong understanding of Material Design 3, custom animations, Lottie· Performance: App profiling, memory management, optimization techniques· Security: Secure coding practices, data encryption, authentication/authorization· Networking: Connectivity handling, offline-first architecture, sync strategies· Backend Integration: RESTful APIs, WebSockets, GraphQL (bonus)Soft Skills & Leadership Qualities· Technical Leadership: Proven ability to lead development teams and projects· Mentorship: Experience mentoring and upskilling junior developers· Communication: Excellent verbal and written communication skills (English/Japanese)· Problem-Solving: Strong analytical and critical thinking abilities· Collaboration: Effective cross-team collaboration and stakeholder management· Ownership: Strong sense of ownership and accountability· Adaptability: Comfortable with changing requirements and prioritiesEducation & Experience· Bachelor's or Master's degree in Computer Science, Software Engineering, or equivalent· 5+ years of software development experience· 3+ years of professional Flutter development experiencePreferred Qualifications· Knowledge of retail/POS business processes and workflows· Experience with hardware peripheral integration· Japanese language proficiency (reading technical documentation)What We Offer· Work on cutting-edge enterprise POS system with real-world impact· Opportunity to lead and mentor a development team· Challenging technical problems and continuous learning opportunities· Collaborative and supportive work environment· Competitive salary and benefits package· Professional development and training opportunities