React / Flutter Developer

Incognito Inventions; United States; On-site; USD 90,000 - 150,000; Full time

Job summary

Incognito Inventions is seeking a React/Flutter Developer to build scalable web and mobile applications with a clean architecture and performance-first mindset. You will handle frontend engineering, API integrations, state management and production deployment for ecommerce or SaaS platforms.

You should be adept at translating designs into responsive UIs, optimizing performance, and collaborating with backend teams on API structure, payments, real-time features, and publishing to app stores.

Qualifications

• Experience building scalable frontend applications in React or Flutter.
• Strong understanding of API integrations, state management, and performance optimization.
• Experience deploying web/mobile apps to production environments.
• Familiarity with ecommerce or SaaS platforms is a plus.

Responsibilities

• Build scalable frontend applications using React and/or Flutter.
• Convert designs (Figma/Adobe XD) into responsive interfaces.
• Optimize performance and SEO where applicable, including SSR considerations.
• Integrate REST APIs and third-party SDKs; work with backend team on API structure.
• Handle app performance, debugging, and publish processes (Play Store & App Store).
• Work on headless ecommerce features and advanced capabilities as needed.

Skills

Frontend engineering

API integrations

State management

Performance optimization

Production deployment

Tools

Next.js

Redux

REST API integration

Dart

Firebase

Payment gateway SDKs

Play Store / App Store publishing

Job description

We are looking for a React / Flutter Developer who can build scalable web and mobile applications with clean architecture and performance-first mindset.

The ideal candidate understands frontend engineering, API integrations, state management, performance optimization, and production deployment. If you have worked on ecommerce, SaaS platforms, or scalable consumer apps — this role is for you.

What you’ll get to do...

1. Web Application Development (React)

• Build scalable frontend applications using React
• Convert Figma/Adobe XD designs into responsive interfaces
• Optimize performance & SEO (if using SSR frameworks)
• Integrate REST APIs & third-party SDKs
• Handle app performance optimization & debugging
• Work closely with backend team for API structure
• Payment gateway integration
• Real-time features (WebSockets, Firebase)

4. Advanced Capabilities

• Work on headless ecommerce (Shopify / Custom Backend)
• Implement SSR using Next.js (preferred)
• Push notifications & analytics integration

Required Technical Skills

For React:

• React.js fundamentals (Hooks, Lifecycle, Routing)
• Experience with:
  • Next.js (preferred)
  • Redux
• REST API integration

For Flutter:

• Strong knowledge of Dart
• API integrations & JSON parsing
• Experience with:
  • Firebase
  • Payment gateway SDKs
• App publishing process (Play Store & App Store)

Preferred Qualifications

• Experience working on ecommerce platforms
• Experience in headless architecture
• Understanding of performance optimization & lazy loading
• Knowledge of unit testing
• Familiarity with CI/CD pipelines
• Experience with WebSocket / real-time applications

Why Join Us?

• Work on global client applications
• Opportunity to work on headless ecommerce systems
• Exposure to product thinking & architecture