Flutter Developer

Are you an experienced mobile developer looking for a challenging project?

At Sii, we’re collaborating with a leader in cloud communication technology, known for revolutionizing the telecommunications industry. We’re seeking a talented Flutter Developer to join our team and contribute to building innovative solutions for voice, video, and messaging applications. This is your chance to work on a cutting-edge project and grow with industry experts.

If you’re ready to take on this exciting opportunity, apply now!

Your tasks

• Developing and implementing core features using Flutter, with a focus on integrating native Android/iOS components when necessary, depending on the project’s requirements

• Building custom OAuth 2.0 clients and ensuring secure authentication flows, maintaining high standards of security and scalability

• Implementing WebRTC for real-time voice communication, utilizing Flutter plugins, WebSockets, and possibly native solutions for optimal performance across iOS and Android platforms

• Designing and developing user interface components with Flutter, aiming for an intuitive and polished user experience

• Integrating CRM systems to ensure smooth data synchronization and communication between the mobile application and backend services

Requirements

• At least 5 years of experience as a mobile developer, with a strong background in Flutter and native mobile development (either Android or iOS)

• Solid experience in either native Android development or native iOS development, combined with expertise in Flutter for cross-platform app development

• Proficiency in OAuth 2.0, including the ability to implement secure authentication mechanisms in mobile applications

• Experience with WebRTC or SIP for real-time communication, as well as familiarity with WebSockets for building scalable and high-performance applications

• Very good command of English – min. B2 level

• Fluent Polish required

• Residing in Poland required