Senior iOS Developer – VoIP/RTC

6 days ago

Chennai GPO Chennai Tamil Nadu, India INT9 Solutions Full time ₹ 12,00,000 - ₹ 20,00,000 per year

About the Role

We are seeking a highly experienced iOS developer with deep expertise in Swift, real-time communication (VoIP/RTC), and modular app architectures. You will lead the development of production-quality UCaaS/CCaaS mobile applications, focusing on VoIP, low-latency audio/video, and scalable architectures.

Location: Remote (India) – must have some overlap with Portugal timezone

Experience: 5–8 years in iOS development

Key Responsibilities

  • Develop, maintain, and optimize iOS mobile applications for real-time audio/video communication.
  • Implement features using Clean Swift (VIP), MVVM, or VIPER architectures.
  • Integrate and troubleshoot CallKit, PushKit, and other VoIP/RTC flows.
  • Collaborate with Android and Web teams to ensure consistent user experience across platforms.
  • Build and maintain CI/CD pipelines (Fastlane, Codefresh, or similar) and automated testing.
  • Monitor app stability and performance using Bugsnag, Crashlytics, or similar tools.
  • Mentor junior developers and share best practices.
  • Participate in agile workflows including backlog grooming, sprint planning, and estimation.

Core Requirements

  • 5–8+ years of professional iOS development experience.
  • Strong proficiency in Swift and the iOS SDK.
  • Hands-on experience with modular architectures: VIP, MVVM, or VIPER.
  • Experience with VoIP/RTC features (CallKit, PushKit, audio/video optimization).
  • Solid understanding of networking, RESTful APIs, asynchronous programming, and background execution.

Preferred Skills

  • Experience with Twilio or Acrobits SDKs.
  • Familiarity with SIP and SFU architectures.
  • Experience setting up and managing CI/CD pipelines.
  • Exposure to app monitoring tools like Crashlytics/Bugsnag.

Skills Required:

Swift, iOS SDK, Clean Swift (VIP), MVVM, VIPER, CallKit, PushKit, VoIP, RTC, RESTful APIs, Networking, Asynchronous programming, Background execution, Production app development

Job Types: Full-time, Permanent

Pay: ₹1,200, ₹2,000,000.00 per year

Benefits:

  • Health insurance
  • Paid time off
  • Provident Fund
  • Work from home

Education:

  • Bachelor's (Required)

Experience:

  • total work: 5 years (Required)

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