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Temporary Engine Builder Jobs (NOW HIRING)

... build problems, and subcontractor's repair performance. * Develops repairs (non-standard in ... Direct engineering experience with the General Electric CFM56-7B engine product line preferred.

... build problems, and subcontractor's repair performance. * Develops repairs (non-standard in ... Direct engineering experience with the General Electric CFM56-7B engine product line preferred.

Assembler I

Spokane, WA · On-site

$19.50/hr

This position is initially temporary with a high potential of full time hire for the right candidates. This job is responsible for the assembly and testing of engine heating systems. This position ...

Mechanical Assembler

El Cajon, CA · On-site

$19.63 - $23.07/hr

Zenix Aerospace Ketema is a leading provider of components for aircraft and turbine engine builders ... S. refugees, asylees or temporary residents under amnesty provisions [as defined in 8 USC 1324b(a ...

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How much do temporary engine builder jobs pay per hour?

As of Jul 23, 2026, the average hourly pay for temporary engine builder in the United States is $27.64, according to ZipRecruiter salary data. Most workers in this role earn between $24.04 and $30.77 per hour, depending on experience, location, and employer.
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iOS Engineer_Native Biomathematical Engine Integration

iOS Engineer_Native Biomathematical Engine Integration

LaunchCode

Saint Louis, MO • On-site, Remote

$25 - $30/hr

Full-time

Posted 2 days ago


Job description

Description
Position Type: Contract-to-hire or contract preferred; direct hire optional (candidate must own Mac required)
Hourly Pay: $25 - $30
Location: Remote (U.S.)
Minimum Years of Experience Required: 2
Role summary
Existing production iOS app with a prepared calculation protocol boundary. Integrate a licensed third-party native biomathematical library behind that boundary, map SDK I/O to app DTOs, dual-run against an in-house baseline, feature-flag cutover, and ship without rewriting product UI.
Technical context
Area
Stack
Platform
iOS 17+, Swift 5.9+, SwiftUI
Architecture
MVVM-ish + service layer (singletons + @EnvironmentObject)
Persistence
Core Data; Keychain for sensitive params
Integrations
Tests
Scale
HealthKit, UserNotifications,
BackgroundTasks, haptics
XCTest unit/integration + UITests
~80 Swift files / ~18k LOC incl. tests
Process
Conventional commits; PR to main;
concurrency hygiene in progress
(@MainActor, Swift 6-oriented)
Architecture seam (already prepared):
SwiftUI Views
Services (data, HealthKit, notifications, personalization, monitor)
AlertnessEngine protocol ? integration point
Domain models + Core Data
Boundary already in place:
  • Protocol: current state, forecast, optimize caffeine/dosing schedule, circulating level, related outputs
  • Inputs/outputs use absolute Dates only at the boundary
  • Single builder path: sleep + dose events + resolved subject profile - engine input
  • Temporary in-house adapter implements the same protocol (dual-run baseline)
  • DI provider swaps implementations without UI rewrites
  • Planned doses are a real flag on events (not free-text parsing)
  • Personalization traits resolved app-side and passed in; integrator does not own trait fitting unless contract expands

On-device only: no backend; computation and storage stay on device.
Responsibilities
  • Package licensed lab library (SPM and/or XCFramework); pin versions; document upgrade path
  • Implement protocol-conforming adapter; map lab SDK I/O ? app DTOs
  • Lock unit/timebase/dose policy (see existing unit-policy docs); touchscreen vs hardware RT policy where relevant
  • Build dual-run / golden regression harness vs in-house baseline; no silent behavior drift
  • Feature-flag provider swap; document failure modes (missing sleep, bad inputs, SDK errors)
  • Own release risk for incorrect predictions at the engine boundary; science/product sign-off on parity

Must-have
  • Strong Swift and iOS (async/await, actors / @MainActor, working inside an existing SwiftUI codebase)
  • Wrapping third-party native libraries (XCFramework / SPM), binary vs source integration, module/linker issues
  • Defining and locking I/O contracts (timebases, units, dose schedules, absolute timestamps)
  • Test discipline: dual-run, golden/regression tests, CI-friendly harnesses; no silent drift ? Clear async written communication; Mac development environment

Nice-to-have
  • Sleep / circadian / caffeine PK-PD or biomathematical modeling exposure ? HealthKit, BackgroundTasks, local notification scheduling
  • Scientific, clinical, or safety-critical app experience
  • On-device performance profiling; numerical stability awareness
  • Prior closed-source / licensed SDK integration under NDA