Swift developers
Rates, hiring difficulty, a hiring guide and interview questions for a Swift developer: everything in one place.
Overview
Swift developers build applications across Apple's ecosystem — iOS, macOS, watchOS, tvOS, and increasingly server-side with Vapor. Swift is a modern, type-safe language with features like optionals, protocol-oriented programming, and structured concurrency that make it both safe and expressive.
Hiring Swift developers is competitive. The talent pool is large but so is demand, so senior people get snapped up quickly.
Where to find more talent: Kotlin developers (5% want to move into Swift).
Retention: 52% of developers who use Swift want to keep using it, and 5% of those who do not use it yet want to start.
Open roles per 1,000 developers Full ranking →
US job postings (30 days) divided by developers who use each stack. Higher means harder to hire.
What a Swift developer costs
Contract and salary benchmarks for the US.
Contract rate
C2C or 1099, from W-2 hourly × 1.3–1.6 for tax, benefits and overhead.
W-2 equivalent
BLS median for US software developers ($135,980), adjusted +8% for Swift using Stack Overflow 2025 pay data (243 respondents).
Full-time contractor cost
Per year at 40 hours a week.
Agencies typically bill 2–3× W-2 pay. See what a full project costs, compare W-2, 1099 and C2C, or check rates by state.
How to hire a Swift developer
What good looks like, and what should worry you.
Typical projects
- iOS and macOS applications with SwiftUI
- Cross-platform Apple apps (iPhone, iPad, Mac, Watch)
- Server-side Swift with Vapor or Hummingbird
- Swift packages and framework development
- Performance-critical mobile features (CoreML, Metal, ARKit)
Team setup
Swift developers are Apple ecosystem specialists. If you're building across multiple Apple platforms (iOS + macOS + watchOS), Swift developers with SwiftUI experience can share significant code across platforms. For server-side Swift, it's a niche but growing area — consider it if your team is already all-Swift and you want a unified language stack. Swift developers generally command rates similar to iOS developers, with a premium for those with cross-platform or server-side experience.
What to look for
- Protocol-oriented programming — Swift's paradigm of choice over classical OOP
- Value types vs reference types: understands when to use structs vs classes
- Swift concurrency: async/await, actors, sendable, structured concurrency
- SwiftUI and the declarative UI paradigm
- Swift Package Manager for dependency management
Red flags
- Writes Swift like Objective-C — heavy use of NSObject, @objc, and Objective-C patterns
- Force-unwraps optionals everywhere instead of proper optional handling
- No understanding of value semantics and copy-on-write behavior
- Can't leverage Swift's type system for safety (enums with associated values, phantom types)
- Ignores compiler warnings — Swift's compiler is one of its best features
Interview questions
Questions that separate strong candidates from people who just list the keyword.
- Explain Swift's optional system. How do you handle optionals safely without force-unwrapping?
- What is protocol-oriented programming and how does it differ from OOP?
- Design a networking layer using Swift concurrency. How do you handle errors, retries, and cancellation?
- Compare structs and classes in Swift. When would you choose each?
- How do you approach cross-platform development across iOS, macOS, and watchOS with SwiftUI?
Hiring trend
How often Swift appears in startup hiring posts over time.
Hacker News “Who’s Hiring” posts mentioning Swift, by year (2015–Feb 2025). Peak: 2017 with 199 posts. HN hiring overall has fallen since 2019, so compare stacks rather than reading absolute numbers. Its share of current US job postings changed -34% since April 2026.
Similar stacks
Related skills, with their rates and hiring difficulty.
Need Swift developers?
We take on contract Swift work, from one developer joining your team to building the whole product. Tell us what you need and we'll reply by email.
- MVPs and new products
- Developers for your existing team
- Rescuing stalled projects
- AI features
Questions
How much does a Swift developer cost?
Contract Swift developers typically bill $92–113/hr (C2C or 1099). The W-2 equivalent salary is about $147,400. Agencies usually charge 2–3× W-2 pay.
Is it hard to hire Swift developers?
Swift is rated High on our hiring difficulty index (60/100, #15 of 29), with about 16 open US roles for every 1,000 developers who use it.
Should I hire a full-time Swift developer or use a contractor?
If the work is ongoing and core to your product, hire. If you need to start quickly, cover a gap, or the role is hard to fill, a contractor or agency gets work moving while you search.