For a data race that should be impossible, not just unlikely
Hire Swift Developers
Swift was built to make whole categories of bugs impossible. That only holds for a codebase disciplined enough to use its type system instead of working around it with force-unwraps and shared mutable state. These engineers are tested on that exact discipline, then placed to raise the bar your codebase depends on.
- Profiles typically within two business days
- Replacement Assurance: If an engineer is not the right fit, a replacement from our own team starts within ten business days of your request, at no extra cost
- You interview before placement if you want to
- At least four hours a day inside your core working hours. Two hours plus a daily written handover for the US West Coast
- 14-Day Risk-Free Trial: For your first engineer on a time-and-materials engagement. Up to 14 calendar days or 80 logged working hours, whichever comes first. End within the trial and pay nothing for trial hours. Continue beyond it and those hours are billed at the agreed rate. Unpaid trial work remains ours if you stop
How we evaluate a Swift engineer
The tasks, the signals and the onboarding, walked through by the people who run them.
90 secSample frame · video pending01Published, not promised
The assessment behind every engineer we send.
The Swift bar is published, not assumed: five competencies, the exact task behind each, and the shortcut that ends a candidacy. Most interviews ask about language trivia. This one asks whether a data race is actually impossible.
What we listen forWhether they can predict mutation behaviour, not just define the terms.
A struct captured inside a closure doesn't reflect a mutation the caller expects it to. Diagnose why and fix it.
- What strong sounds like
- Explains the value-type copy behaviour precisely and proposes a fix that respects it rather than fighting it.
- What gives us pause
- Converts the struct to a class to make the mutation 'work' without understanding why the original behaviour occurred.
Swift · Combine · Structured Concurrency
SwiftUI · Vapor · Swift Package Manager
XCTest · Swift Testing
Xcode · SwiftLint · SPM
02Who you actually meet
The bench, priced by seniority.
Three seniority tiers, priced honestly, and the engineers who fill each one today. Real names and photos take their place as soon as we can share them, and the standard stays exactly the same.
Engineer
Features scoped tightly enough to ship inside your review bar, every time.
The right first hire when your seniors already set the standard.
$2,600–3,300per month
Senior
The hard module nobody else wants to own, taken end to end.
Ownership of a surface, without adding a manager to your headcount.
$3,600–4,600per month
Lead
The workstream's decisions, made daily, so nothing waits on a meeting.
One accountable voice for a pod or initiative that can't afford to drift.
$4,900–6,100per month
Swift engineer
3 yrs · US East overlap
Audited force-unwraps across a payments module and removed the ones actually hiding defects
- Swift
- Combine
- XCTest
Senior Swift engineer
7 yrs · UK + EU hours
Isolated a shared cache behind an actor, ending a data race the concurrency checker had flagged
- Swift
- Concurrency
- SwiftUI
- SPM
Lead Swift engineer
10 yrs · EU + US split
Split a monolithic app target into packages, cutting an eight-minute build down sharply
- Swift
- Architecture
- Vapor
- CI/CD
Indicative ranges, representative profiles. Exact figures and named engineers arrive with your shortlist.
Weighing this against a freelancer, a direct hire or a marketplace? See the honest comparison
03From stated problem to first change
Four steps, each closing on evidence.
What matters here is whether the code is provably correct, not how many language features someone can name. Each step produces something concrete, and walking away costs you nothing at any point.
Define the correctness problem
We map where your codebase's type-safety or concurrency guarantees are actually under strain. The brief names that gap, not a list of Swift keywords to know.
A brief your leads signMatch against your codebase
Candidates are screened against your actual concurrency model, your error-handling conventions and your review culture. Three engineers who read your code beat thirty who list Swift on a CV.
Three fits, not thirty CVsAssess on the real tasks
Bring your own engineers to the data-race and force-unwrap exercises. Correctness judgement is visible here, not a rehearsed answer about optionals.
Evaluation you can watchOnboard inside your process
Access, standards and a first bounded fix merged for real. Continuity cover means a departure is resolved on our end before it touches your timeline.
A merged change in week one
04Evidence and proof
Engineers who made bugs structurally impossible.
Swift proof is a defect the type system now prevents, not one merely caught in testing. Every record here waits for written client approval before production.
Explore case studies
A data race caught by the compiler before it reached a single user.
Aster North's shared cache had a data race that only the new Swift concurrency checker caught, and only after an embedded Swift engineer enabled strict checking deliberately.
- Data races reaching production
- Zero
- Time to strict-mode adoption
- One sprint
He rewrote our error handling so a force-unwrap crash became structurally impossible, not just less likely.
Sample · pending client approval
The protocol redesign she proposed replaced a class hierarchy nobody wanted to touch anymore.
Sample · pending client approval
05Three shapes, one standard
Add an engineer, a platform pod, or a practice.
Most teams begin with a single engineer inside their current review culture. A pod fits better when a shared module needs one accountable owner across multiple targets. Delivering a platform outright, rather than adding headcount, is what the practice exists for.
- Team extension
One named engineer
A single Swift specialist inside your direction and your reviews. The smallest commitment, and the most common starting point.
- Delivery pods
A platform pod
A pod with its own lead that owns a shared Swift module across your app and server targets. You set priorities while the pod carries delivery.
- Mobile app development
The practice, not the person
If the real requirement is a platform delivered rather than a seat added, mobile app development carries that responsibility instead.
06Straight answers
Asked before a Swift hire is signed.
01What does a Swift engineer actually do day to day?
Designs types and protocols that make invalid states unrepresentable, handles errors and optionals explicitly instead of forcing them away, and keeps concurrency provably safe under the actor model. The unglamorous majority of the work is discipline the compiler alone cannot enforce.
02Do you hire for iOS-specific Swift or server-side Swift?
Matched to where your code actually runs. Type-safety and concurrency judgement transfers across both, then the evaluation confirms familiarity with your specific platform.
03Can we run our own interviews as well?
Yes, the published tasks are built to be reused directly. Some clients now run the data-race exercise themselves in later hiring rounds.
04How fast can a Swift engineer start?
A shortlist arrives within days from a continuously evaluated bench. Onboarding pace after that depends mostly on how fast your side can open repository access.
05Who manages the engineer day to day?
Your leads run the reviews and set priorities, same as with any hire. We take on the employer side of it instead: continuity, payroll, replacement risk and the transitions in between.
06What if the engineer is not the right fit?
Raise it early and the replacement won't cost you anything. The next engineer is walked through the specific gap, which is why matches rarely miss twice.
07Do your Swift developers use AI coding tools?
Yes, openly. AI drafts protocol scaffolding and test fixtures quickly; the engineer stays accountable for every concurrency decision, optional-handling choice and merge that reaches your codebase.
08How does pricing work for a hired Swift engineer?
The tier bands above are the honest starting point; the shortlist fixes the real number. No fee changes hands before an interview, and exit is a notice period, nothing more.