iPhone 17 Foot-Scan Rotation Fix

- Project Overview:
We are looking for an experienced iOS engineer to fix a 90-degree rotation issue affecting a foot-scanning flow on iPhone 17 devices. The issue appears in the TrueDepth / camera pipeline and must be resolved without impacting behavior on older devices (iPhone 15/16).

This is a focused, technical debugging and implementation task, not a full app build.

- Goal:
Correct the scan orientation on iPhone 17 while preserving existing functionality on previous iPhone models.

- Responsibilities:

Analyze the TrueDepth capture pipeline and orientation handling across camera, rendering, and detection layers

Identify the root cause of the rotation issue specific to iPhone 17

Implement a robust, device-aware orientation fix (no regressions on older devices)

Ensure color preview, depth/point cloud, and detection bounding boxes remain aligned

Validate the fix on real devices and document the solution

- Required Skills:

Strong Swift and iOS camera stack experience

AVFoundation, AVCaptureSession, AVCaptureConnection

TrueDepth and depth data handling (AVCaptureDepthDataOutput)

Debugging camera orientation issues, especially front camera behavior

Experience applying orientation transforms correctly

- Nice to Have:

Metal or MetalPerformanceShaders

SceneKit or 3D point cloud rendering

Vision / CoreML integration

Experience with 3D scanning SDKs (e.g., StandardCyborgFusion or similar)

- Deliverables:

Code changes that fix rotation on iPhone 17 only

No regressions on older iPhone models

Short technical write-up explaining the root cause and fix

Validation notes from testing on iPhone 17 and previous models

- Engagement:

Contract-based, long-term task

Immediate start preferred

Clear scope and fast turnaround