Nexdecade Technology (Pvt.) Ltd. leading value added service provider in Bangladesh.  We are working with all mobile telecom operators more than 12 years with different services. Currently we are managing more than 20 million customers, we are the pioneer in development for OTT / IPTV / IOT platform in Bangladesh. We got 200+ employee, Member of Basis and licensed operator from BTRC.

We are seeking a highly qualified and experienced Flutter Developer Chat Solution SDK to join our exciting team at Nexdecade Technology (Pvt.) Ltd. As a Flutter Developer Chat Solution SDK, you will be responsible for designing, developing, and delivering unique Android applications that match our client's needs and expectations. We invite you to apply for this role if you are interested in Android mobile application development and have the requisite abilities.

Flutter Developer - Chat Solution SDK
Mid Level Flutter Developer (WebRTC, VoIP, SIP, RTC SDK Development)

As a Fluter App Developer, you will be responsible for designing, developing, and delivering unique Android applications that match our client’s needs and expectations. We invite you to apply for this role if you are interested in Android mobile application development and have the requisite abilities.

• Build and maintain a Flutter SDK for cross-platform VoIP and chat integration with real-time communication capabilities.
• Integrated SIP and WebRTC-based call functionality using native platform channels (Android/iOS).
• Manage media codec compatibility (GSM, H.264, VP8, Opus) across platforms with custom integrations.
• Optimize audio/video call quality and latency for both Android and iOS from Flutter interface.
• Provide developers with easy-to-use, documented APIs for chat and call feature integration in Flutter apps.
• Secure data and media streams through encryption and best security practices.
• Collaborate with native platform teams for deep device-level optimizations.
• Interface with backend developers to support signaling, messaging, and real-time updates.
• Conduct multi-platform testing and optimize SDK for various screen sizes and device types.
• Ensure background call handling and notification delivery via PushKit, Firebase, etc.

• Hands-on Flutter development experience with real-time features like video/audio calls and messaging.
• Experience integrating native SDKs (Android/iOS) via platform channels for media streaming.
• Strong understanding of WebRTC, SIP, RTP, SRTP protocols.
• Proficiency in Dart with solid OOP and state management patterns (e.g., BLoC, Riverpod).
• Knowledge of Flutter plugin architecture for bridging native code.
• Familiarity with performance optimization, network monitoring, and testing tools.
• Understanding of CI/CD pipelines for Flutter development.
• Experience with Firebase services like FCM, Realtime DB is a plus.
• Experience building/consuming chat and video call SDKs is highly desirable.

• Native Android/iOS development experience to support advanced integrations.
• Familiarity with video streaming protocols and encoding techniques.
• Experience using Agora, Twilio, or Janus gateway with Flutter apps.
• Experience with call handling across foreground/background states in Flutter.

• Educational : Bachelor’s degree in Computer Science, Software Engineering, or a related field.
• Experience : 2-4 years of Flutter development experience, with real-time communication and media handling.

Salary: Negotiable, Most competitive & attractive package in the industry waiting for the deserving candidates

Other Benefits: As per company policy and rules

Job Location: 69/1, Chandrasheela Shuvastu Tower, Panthapath, Dhaka

• Competitive salary and performance-based bonuses.
• Hybrid/Remote flexibility and open working culture.
• Exposure to advanced real-time communication technology stacks.
• Access to learning resources, courses, and tech events.
• Collaborative work culture and career advancement opportunities.

Nexdecade Technology (Pvt.) Ltd. believes every one of its employees, suppliers, downstream partners, visitors, clients and community including children, youth and vulnerable adults that come into contact regardless of age, race, religion, gender, disability or ethnic origin has the right to be protected from all forms of harm, abuse, neglect, harassment, and exploitation. We guarantee assessment of candidates with disabilities who meet the essential requirements. We are proud to be an equal opportunity employer and will do everything possible to ensure that those who are suitable to work within our values and beliefs are recruited to work for us. Any personal persuasion will result in disqualification of candidature.