Senior Full-Stack Engineer (VoIP Direction)

Astra Tech


Date: 1 day ago
City: Abu Dhabi
Contract type: Full time
Position: Senior Full-Stack Engineer (VoIP Direction)

Responsibilities

  • VoIP SDK Architecture & Evolution
    • Lead the end-to-end architecture design of a multi-platform (iOS / Android / Web / Desktop) VoIP SDK;
    • Design and optimize core modules including signaling, media engine abstraction, transport, and encryption;
    • Build a unified cross-platform SDK interface and modular framework for long-term scalability and maintainability.
  • Feature Implementation & Delivery
    • Translate complex product requirements into robust, high-performance real-time communication solutions;
    • Deliver consistent functionality and user experience across different platforms;
    • Collaborate closely with backend, product, and QA teams to ensure high-quality, on-schedule releases.
  • Performance Optimization & Quality Improvement
    • Lead SDK performance profiling and optimization, including startup time, memory footprint, CPU usage, and latency;
    • Optimize the entire audio/video pipeline—from capture, encode, transport, decode, to render;
    • Monitor and improve key QoE metrics (latency, jitter, packet loss, freeze ratio, MOS, etc.);
    • Design and maintain an intelligent monitoring and auto-tuning system for call quality.
  • AI-Driven Development & Innovation
    • Explore and apply AI-assisted programming methodologies (e.g., code generation, model-assisted debugging, AI agent collaboration);
    • Integrate AI capabilities into real-time communication workflows such as quality assessment, network scheduling, and media enhancement;
    • Build an AI-powered self-optimization and diagnostics framework within the SDK.
Qualifications

  • Background
    • Bachelor’s degree or higher in Computer Science, Telecommunications, or related fields;
    • 5+ years of full-stack or client-side development experience, including 3+ years in VoIP / Real-Time Communication systems.
  • Technical Skills
    • Proficient in one or more of the following: Objective-C, Swift, Java, Kotlin, C++;
    • Strong understanding of WebRTC, QUIC, SRTP, RTP and related real-time transport protocols;
    • Familiar with FEC (Forward Error Correction), NACK, PLC, JitterBuffer and other packet-loss recovery or error-resilience mechanisms;
    • Deep understanding of audio/video capture, codec integration, synchronization, QoS, and adaptive bitrate control;
    • Experienced in modular SDK design, performance tuning, and cross-platform development.
  • Preferred Qualifications
    • Hands-on experience leading or contributing to cross-platform VoIP SDK architecture (iOS / Android / Web / Desktop);
    • Familiar with AI-assisted development tools (e.g., GitHub Copilot, Cursor, Claude, or LLM APIs);
    • Experience with AI-powered media enhancement (AEC, ANS, super-resolution, noise suppression, dynamic rate control);
    • Strong system design mindset, abstraction ability, and architectural vision.
  • Personal Attributes
    • Flexible and proactive, comfortable working across multiple platforms and languages;
    • Strong ownership, engineering discipline, and curiosity for deep system optimization;
    • Excellent communication skills and cross-functional collaboration ability;
    • Passionate about building world-class real-time communication experiences.

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