Founding Flutter Mobile Engineer — Audio App (Remote)

softrun; California, Northern (MO, KY); Hybrid; USD 126,000 - 154,000; Full time

Job summary

softrun is seeking its first dedicated engineer to own the Flutter app end to end, shipping updates for both iOS and Android and ensuring crash-free releases. You will optimize mobile audio workflows, integrate a Node.js backend, and refine on-device latency and gestures while coordinating with the founder.

The role involves extending the rehearsal loop, building cue-based features, and managing API changes across the backend and app experience to deliver a polished, responsive product.

Qualifications

• Shipped a Flutter app to both stores and maintained it across OS releases.
• Experience with real audio on mobile: recording, formats, permissions, background modes.
• Comfortable with a Node.js backend and API changes when needed.
• Focus on latency, gestures, and performance on varied network conditions.
• Able to work on codebase independently with founder-level review.

Responsibilities

• Own the Flutter app end to end: architecture, releases, both stores, crash-free rate.
• Make recording bulletproof under long takes, interruptions, and low storage.
• Push delivery metrics from server-side to on-device and live during use.
• Build the rehearsal loop with cue cards and next-take flow on mobile.
• Work the API and Express backend; update both sides as the app evolves.
• Handle store plumbing: subscriptions, sign-in, deep links for iOS/Android.

Skills

Flutter app development

Mobile audio handling

Node.js backend

API integration

Performance optimization

Tools

Express backend

OpenAPI

App Store / Play Store

Job description

softrun is seeking its first dedicated engineer to own the Flutter app end to end, shipping updates for both iOS and Android and ensuring crash-free releases. You will optimize mobile audio workflows, integrate a Node.js backend, and refine on-device latency and gestures while coordinating with the founder.

The role involves extending the rehearsal loop, building cue-based features, and managing API changes across the backend and app experience to deliver a polished, responsive product.