# Mobile App Engineer (iOS) at Npv

- Company: Npv
- Status: Open
- Workplace: On-site
- Location: New York City
- Level: Mid-level
- Discipline: Mobile
- Employment: Full-time
- Salary: $185K–300K
- Posted: 2026-11-06
- Skills: iOS
- Apply: https://jobs.ashbyhq.com/npv/fc6a5c32-9bdb-4e2a-9537-32b8cf2655bc

## Description

We're looking for a Mobile App Engineer (iOS) to join Fullstack.

Fullstack Trade is building the only unified front-end trading app for retail crypto – perps, cross-chain spot, and prediction markets under one portfolio margin balance. No bridging, no fragmentation. Founded by Flood, creator of Insilico Terminal ($900B CEX volume, 90% market share), and Robin, operated a leading CEX and on-chain HFT firm. Launching Jan/Feb 2027.


You will

 - Build Fullstack's first mobile trading app from zero: the full trading experience, not a "pocket" version.

 - Work with live market data, complex order types, and WebSocket streams with reconnection logic.

 - Design gesture-driven UI and fast interactive charts that fit a professional terminal on a small screen.

 - Integrate native wallets, biometric auth, transaction signing, and on-device key storage.

 - Own the full App Store release cycle and CI/CD.

 - Lay down the mobile architecture future engineers will build on.

Requirements

 - 3+ years of iOS experience in Swift.

 - Shipped a mobile app from zero to one, through App Store review to production.

 - Real-time data and WebSockets experience.

 - Strong UI/UX sensibility: wireframing, gesture-driven interfaces.

 - High ownership: ready to lead mobile from scratch.

 - You actively trade crypto or perps, or build trading side projects.

 - On-site 5 days/week in SoHo, NYC.

Stack

 - Swift, iOS, WebSockets, REST APIs, CI/CD, App Store.

Nice to have

 - Fintech, trading, or real-time data mobile apps.

 - Crypto-native app experience (wallets, exchanges).

 - VC-backed s

More Npv roles: https://deviantjobs.com/companies/npv