Technical Co-Founder / iOS Engineer — Stealth Endurance Sports App

Compensation: 5.0% – 10.0%

About Aurelius

Aurelius is a stealth-stage mobile app for endurance athletes. Incorporated. Patent pending. Working prototype. 50-page PRD. All major product decisions locked.

We're building the emotional layer of endurance sport that nobody has built yet.

The Role

This is a co-founder role, not a contractor engagement. You will own the technical vision, make architectural decisions, and build the product from prototype to App Store. The business founder brings 15+ years building subscription products at three major fitness platforms. You bring the iOS engineering.

If you want to build something meaningful and own a piece of it — this is the role.

What We're Building

An emotional layer of endurance sport that nobody has built yet.

What You're Building

React Native iOS app (Android V1.1) GPS coordinate-based audio triggering — CoreLocation background mode Audio ducking — AVAudioSession .duckOthers against Spotify, Apple Music Triathlon multi-leg support — Bluetooth T1/T2 transition detection Crew web page — supporters record at any URL, no app download required Voice Memo Vault — post-race replay, curated .m4a download export Stripe + StoreKit 2 subscriptions AWS backend — S3, Lambda, API Gateway, CloudFront Server-side audio pipeline — FFmpeg, -14 LUFS normalization App Store submission — provisioning, TestFlight, review

Required:

React Native (iOS first) AVFoundation — audio recording, background playback, ducking CoreLocation — GPS background mode, coordinate triggers Bluetooth framework — device detection AWS — S3, Lambda, API Gateway Stripe + StoreKit 2 At least one production iOS app shipped to the App Store

What's on the Table

What Already Exists

16-screen interactive prototype — live, all user flows built 50-page PRD — every feature, edge case, GPS trigger logic documented Patent pending Delaware C-Corp incorporated Financial model, investor docs, pitch deck complete Active investor outreach underway

No discovery phase. No design phase. You build from week one.

Process

NDA first. Then prototype, full PRD, and financial model.

To show you've read this and understand what we're building — include the word ENDURANCE at the top of your application.