Skill Profile

Combine & Swift Concurrency

Publishers, Subscribers, async/await, structured concurrency, actors, Sendable

Mobile Development iOS Development

Roles

where this skill appears

Levels

structured growth path

Mandatory requirements

the other 2 optional

Mobile Development

iOS Development

3/17/2026

Choose your current level and compare expectations. The items below show what to cover to advance to the next level.

What is Expected at Each Level

The table shows how skill depth grows from Junior to Principal. Click a row to see details.

Role	Required	Description
iOS Developer		Uses Combine and Swift Concurrency at a basic level. Creates simple screens from designs. Understands the application lifecycle.

Role	Required	Description
iOS Developer		Independently implements complex screens with Combine and Swift Concurrency. Optimizes performance and memory consumption. Works with asynchronous patterns.

Role	Required	Description
iOS Developer	Required	Architects mobile application with Combine and Swift Concurrency. Optimizes performance for low-end devices. Implements CI/CD for mobile development. Mentors the team.

Role	Required	Description
iOS Developer	Required	Architects reactive iOS application architecture based on Combine: Publisher chains for data transformation, subscription management via AnyCancellable. Creates custom Publishers and Subscribers for business logic, integrates Combine with URLSession, NotificationCenter, and Core Data. Optimizes use of throttle, debounce, and combineLatest operators.

Role	Required	Description
iOS Developer	Required	Defines the reactive programming strategy for the iOS platform, developing standards for Combine vs async/await usage. Creates custom operator and Publisher libraries for typical business scenarios. Implements reactive patterns for complex data flows: multi-source synchronization, event-driven architecture, and real-time updates.

Junior 1 requirements

iOS Developer

Uses Combine and Swift Concurrency at a basic level. Creates simple screens from designs. Understands the application lifecycle.

Middle 1 requirements

iOS Developer

Independently implements complex screens with Combine and Swift Concurrency. Optimizes performance and memory consumption. Works with asynchronous patterns.

Senior 1 requirements

iOS Developer
Required

Architects mobile application with Combine and Swift Concurrency. Optimizes performance for low-end devices. Implements CI/CD for mobile development. Mentors the team.

Lead / Staff 1 requirements

iOS Developer
Required

Architects reactive iOS application architecture based on Combine: Publisher chains for data transformation, subscription management via AnyCancellable. Creates custom Publishers and Subscribers for business logic, integrates Combine with URLSession, NotificationCenter, and Core Data. Optimizes use of throttle, debounce, and combineLatest operators.

Principal 1 requirements

iOS Developer
Required

Defines the reactive programming strategy for the iOS platform, developing standards for Combine vs async/await usage. Creates custom operator and Publisher libraries for typical business scenarios. Implements reactive patterns for complex data flows: multi-source synchronization, event-driven architecture, and real-time updates.

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