Experienced iOS Developer

Project Overview

This is an audio-focused navigation app where routing events trigger custom voice output. The core requirement is to ensure the app functions as a complete, reliable GPS experience, with additional audio features layered on top. This is not a UI-heavy project. The work is centered around navigation accuracy, maneuver handling, audio timing and sequencing, and voice instruction assembly.

Current State

• iOS app written in Swift
• Mapbox Directions API integrated
• Navigation routing working
• Basic audio trigger system in place
• TestFlight build available

Scope of Work (This Phase)

The goal is to complete a fully functional navigation experience with correct voice instructions.

Core Requirements

• Ensure navigation behaves like a standard GPS app
• Maneuvers update correctly during navigation
• Camera follows user properly
• Rerouting works reliably
• Background navigation functions

Voice & Instruction Requirements

• Navigation instructions must be complete and natural, including street names, exit numbers, and variable distances
• Integrate dynamic voice generation for elements that cannot be pre-recorded such as street names, exits, and uncommon distance values

I will provide the API key and Voice/Character ID

Use pre-recorded audio where applicable and dynamic voice generation only where necessary

Audio Behavior

• Ensure proper timing of instructions
• No overlapping audio
• Correct sequencing of navigation events

Important Notes

• This is a continuation project, not a fresh build
• The Mapbox integration is already complete
• The focus is finishing and refining, not rebuilding
• The app must function as a complete navigation system first before any additional audio features are layered

Ideal Candidate

• Strong iOS / Swift experience
• Hands-on experience with Mapbox Directions API
• Experience working with navigation maneuvers and route steps
• Experience with audio playback and timing logic
• Experience with TTS or voice APIs is a plus

Timeline & Expectations

• Short-term engagement
• Clearly defined scope
• Looking for someone who can execute efficiently without over-engineering

To Apply

Please include your relevant Mapbox or navigation experience, any work involving audio or voice systems, and an estimated number of hours to complete this scope after review