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 Android Developer - Chat Solution SDK to join our exciting team at Nexdecade Technology (Pvt.) Ltd. As a Android 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.

Android Developer - Chat Solution SDK
Mid-Level Android Developer (WebRTC, VoIP, SIP, Real-Time Communication)

As a Android 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.

• Develop and maintain an Android SDK for VoIP and real-time chat solutions, ensuring scalability and high performance.
• Integrated SIP-based VoIP and WebRTC for real-time audio/video calling with optimized media handling.
• Work with GSM codecs for audio and video processing across various Android devices and network environments.
• Optimize media translation and transcoding on Android platforms for superior call quality with low latency.
• Ensure SDK can be easily integrated with third-party Android apps through clear, modular APIs.
• Implement end-to-end encryption and other secure communication practices.
• Ensure consistent SDK performance across a wide range of Android devices and OS versions.
• Collaborate with backend teams for signaling, messaging, call management, and real-time event handling.
• Conduct performance and stress testing under different network conditions (Wi-Fi, LTE, 5G).
• Troubleshoot and resolve SDK issues related to connectivity, media streaming, and performance.
• Work with UI/UX teams to enhance call interfaces, chat components, and user interaction workflows.

• Strong experience in Android development with WebRTC, VoIP, and SIP integration.
• Hands-on experience with RTP/SRTP and GSM codec integration for audio/video handling.
• Solid knowledge of Java and Kotlin, and Android SDK internals.
• Deep understanding of networking protocols (TCP, UDP, ICE, STUN, TURN) and NAT traversal
  techniques.
• Skilled in optimizing real-time media streaming for mobile performance.
• Proficient in debugging media, network, and low-level issues on Android.
• Experience with Android Telephony, Call Screening, and Telecom APIs is a plus.
• Familiarity with CI/CD for Android apps, automated testing, and build processes.
• Knowledge of security and encryption protocols in real-time communications.
• Experience working with WorkManager, Foreground Services, and Push Notifications is a bonus.
• Familiarity with tools like Wireshark or network emulators for QA and testing under variable
  conditions is preferred.

• Experience with video codecs and streaming protocols such as H.264, VP8.
• Real-time messaging frameworks (e.g., WebSockets, MQTT).
• Familiarity with Twilio, Agora, or similar CPaaS platforms.
• Experience with VoLTE, IMS, or telecom integration.
• Automated testing frameworks like Espresso or UI Automator.

• Educational : Bachelor’s degree in Computer Science, Software Engineering, or a related field.
• Experience : 2-4 years of professional experience in Android development, with at least 1 year in SIP/WebRTC/VoIP

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.