Senior Flutter Engineer - Build Scalable Fintech & Gaming Apps

Smart state; Fort Lee (NJ); On-site; USD 220,000 - 240,000; Full time

Benefits offered by this job

Discretionary bonuses

Comprehensive benefits

Generous PTO

In-office meals

Job summary

Smart State Inc. in New Jersey seeks a Senior Flutter Developer to design, develop, and optimize high-performance iOS and Android apps using Flutter and Dart for fintech and gaming platforms. This role is based in Fort Lee, NJ with office-based work and no remote option.

You’ll own core features, contribute to mobile architecture, and deliver reliable, scalable experiences for thousands of users. The team collaborates with Product and R&D, and emphasizes SOLID principles and testing practices.

Qualifications

• Minimum 3+ years of professional mobile development experience (Android or iOS).
• 1–2+ years of hands-on Flutter experience with at least one published production app.
• Strong Dart fundamentals, OOP, and SOLID principles; REST APIs and sockets experience.

Responsibilities

• Develop and maintain mobile components for iOS and Android using Flutter and Dart.
• Collaborate with Product and R&D during planning, estimation, and technical discussions.
• Ensure application performance, stability, and scalability through thoughtful architecture and optimization.
• Write clean, maintainable, and testable code following OOP, SOLID, and mobile best practices.
• Participate in code reviews and contribute to improving technical standards and engineering practices.
• Support documentation and knowledge sharing across the mobile team.
• Own core features and contribute to mobile architecture decisions.
• Work in a fast-growing, international technology environment and deliver reliable experiences.

Skills

Flutter

Dart

REST APIs

OOP

SOLID

Mobile architecture

Job description

Smart State Inc. in New Jersey seeks a Senior Flutter Developer to design, develop, and optimize high-performance iOS and Android apps using Flutter and Dart for fintech and gaming platforms. This role is based in Fort Lee, NJ with office-based work and no remote option.

You’ll own core features, contribute to mobile architecture, and deliver reliable, scalable experiences for thousands of users. The team collaborates with Product and R&D, and emphasizes SOLID principles and testing practices.