Tango

Senior IOS AI-Enabled Developer

Tango · Kyiv, Ukraine

Consumer Services · 201-500 employees

Yesterday
Senior (5-10 yrs) Full-time Ukraine
Log in to apply, save this posting, or score it against your profile with AI.

About the role

Design and ship end-to-end features for a large modular iOS application while driving code quality through reviews and refactoring. Contribute to shared infrastructure, including build tooling and testing, while improving overall app performance and stability.

What they look for

Swift Objective-C SwiftUI UIKit Modular architecture Dependency injection Unidirectional data flow XCTest Fastlane XcodeGen SwiftPM Instruments AI coding agents Protocol-oriented design Performance profiling

Requirements

Requires 5+ years of commercial iOS development experience with strong proficiency in Swift, Objective-C, and SwiftUI. Candidates must have hands-on experience with AI coding agents and a deep understanding of modular architectures and performance profiling.

Benefits

Stock options Professional environment Competitive salary Performance review Flexible working hours Social and welfare packages 20 working days paid vacation Paid sick leave Team building activities

Full description

Tango is a successful, market leader, a live-streaming Platform with 450+ Million registered users, in an industry projected to reach $240 BILLION in the next couple of years.

The B2C platform, based on the best-quality global video technology, allows millions of talented people around the world to create their own live content, engage with their fans and monetize their talents.

Tango live stream was founded in 2018 and is powered by 350+ global employees operating in a culture of growth, learning, and success!

The Tango team is a vigorous cocktail of hard workers, creative brains, energizers, geeks, overachievers, athletes, and more. We push the limits to bring our app from “one of the top” to “the leader”.

The best way to describe Tango's work style is not to use the word “impossible”. And we believe that success is a thorny path that runs on sleepless nights, corporate parties, tough releases, and of course our users' smiles (and as we are a LIVE app, we truly get to see our users all around the world smiling right in front of us in real-time!).

Do you want to join the party?

Responsibilities

  • Design and ship features end-to-end in a large modular Swift/Objective-C iOS app.
  • Drive code quality through reviews, refactoring, and enforcement of module boundaries.
  • Improve app performance, stability, and runtime behavior.
  • Contribute to shared infrastructure - build tooling, codegen, testing, CI.

Requirements

  • 5+ years of commercial iOS development at production scale.
  • Strong Swift (modern concurrency, generics, macros) and Objective-C for interop.
  • Deep hands-on experience with SwiftUI - state and data flow (@Observable, @State, @Binding, @Environment), view composition, performance and view-invalidation, List/ForEach identity, animations, and interop with UIKit.
  • Solid UIKit skills: custom controls, complex layouts, and interface animations.
  • Strong grasp of OOP, protocol-oriented design, and common iOS patterns.
  • Experience with modular architectures, dependency injection, and unidirectional data flow (UDF).
  • Testing: XCTest, Swift Testing, Quick/Nimble.
  • Build tooling: Fastlane, XcodeGen, SwiftPM, SwiftLint/SwiftFormat.
  • Profiling with Instruments - able to diagnose and fix CPU, memory, hitch, and hang issues.
  • Independent, proactive, and effective in cross-functional collaboration.

AI-enabled software development

  • Hands-on experience using AI coding agents in day-to-day software development.
  • Ability to break down engineering goals into clear, well-scoped tasks for AI agents.
  • Ability to provide effective context, constraints, acceptance criteria, and validation steps.
  • Strong awareness of the risks and limitations of AI-generated software.
  • Ability to distinguish where AI can accelerate delivery and where human judgment is essential.
  • Interest in exploring and improving agentic development workflows.
  • Willingness to share effective workflows and lessons learned across engineering team.

What we offer:

  • International company with several offices in different locations: Tel-Aviv, Kyiv, Warsaw, Limassol.
  • Granting an Option;
  • A professional environment with great people to work with;
  • Competitive salary, performance review;
  • Flexible working hours, no one here tracks your work time because our culture is built on trust and cooperation;
  • Social and welfare packages;
  • 20 working days paid vacation, official public holidays, and 100% paid sick leave;
  • Opportunities to make a difference, to develop and grow;
  • Regular corporate celebrations, team building and fun activities;
  • Comfortable office in the city center. Our Kyiv office is open 24/7 with all safety and health measures in place.

#LI-MB1