-
Rakuten Viber

iOS RTC Software Engineer

Rakuten Viber
Poland · Full-time · Not Applicable

Rakuten Viber is one of the most popular and downloaded apps in the world. Working with us provides a unique opportunity to influence hundreds of millions of our users and to be part of the journey that makes us a super-app. Our mission is to make people’s lives easier by enabling meaningful connections, from precious moments with family and friends, through managing business relationships to pursuing their passions.

We invite the iOS developer to the RTC team. Our cross-platform team develops, analyzes and optimizes Viber calls.

Responsibilities:

We invite a competent and proactive specialist who knows Swift, Objective-C, C++ that is interested in how the code is executed at the low level. While working with us, he will be engaged in research and development of various aspects of Viber calls on iOS platform:

  • WebRTC library integration and fine-tuning
  • Signaling protocol development
  • Media capturing and processing optimization
  • CPU/traffic/battery consumption optimization
  • Calls statistics gathering and analysis.

We expect that our candidate knows how to work in a team, carefully thinks out technical solutions, knows how to plan his time, correctly prioritize and needs minimal control.

Requirements:

  • Deep knowledge of Swift and Objective-C: OOP, data structures, multithreading, interoperability.
  • Experience with WebRTC, iOS CallKit and AVAudioSession.
  • Understanding how a TCP/IP stack works.
  • Intermediate+ level of English.

Advantages:

  • Proficiency in C/C++, Java, Kotlin, JS/TypeScript, Bash, Python.

Key Skills

Ranked by relevance

ios c swift data structures kotlin java bash oop
Login to Apply
Posted
Apr 13, 2026
Type
Full-time
Level
Not Applicable
Location
Warsaw

Industries

Software Development

Categories

Engineering Information Technology

Related Jobs

3 roles aligned with this opportunity

View all jobs
View Job Details
Alteryx
Related

Senior Software Engineer

2026-05-20

Full-time
Not Applicable
Australia
Software Development
Engineering
View Job Details
Amazon
Related

Network Development Engineer, Office Network Reliability Engineering

2026-05-27

Full-time
Not Applicable
United Kingdom
Software Development
Information Technology
View Job Details
Yojee
Related

Software Engineer (Backend Focus)

2026-05-27

Full-time
Mid-Senior
Australia
Information Technology & Services
Engineering