Senior Mobile Engineer - Fintech, AI-assisted, end-to-end

humaninterest; United States; Hybrid; USD 140,000 - 210,000; Full time

Benefits offered by this job

Health and wellness benefits

Work-from-home stipend

Quarterly lifestyle stipend

Job summary

HumanInterest is expanding its mobile engineering team to build a retirement savings product for employees and plan administrators. You will help establish a scalable mobile architecture and shape release practices while delivering reliable, high-quality user experiences across iOS and Android.

You will own features end-to-end, work with AI coding agents, and drive performance, security, and accessibility as the product evolves.

Qualifications

• 5+ years building and maintaining production software, owning consumer mobile apps across multiple store releases.
• Strong experience with native development (SwiftUI or Kotlin/Jetpack) or cross‑platform frameworks (React Native, Flutter, Kotlin Multiplatform).
• Ability to own features from design through launch in a cross-functional team.
• Strong mobile engineering fundamentals: architecture, performance, and testing.
• Hands-on experience with agentic coding tools and reviewing generated code for quality, security, and correctness.

Responsibilities

• Design and ship polished mobile features for iOS and Android.
• Establish a modular, testable codebase and determine native vs cross-platform approach.
• Use AI coding agents throughout development and review their output for correctness and security.
• Build secure mobile flows for authentication, balances, and sensitive financial data.
• Set up CI/CD, staged rollouts, feature flags, and automated UI tests.
• Collaborate with Product, Design, and backend engineers on app experiences and performance.

Skills

Mobile development

Swift/SwiftUI

Kotlin/Jetpack

Cross-platform frameworks

AI-assisted coding review

Tools

CI/CD tools

AI coding agents

Job description

HumanInterest is expanding its mobile engineering team to build a retirement savings product for employees and plan administrators. You will help establish a scalable mobile architecture and shape release practices while delivering reliable, high-quality user experiences across iOS and Android.

You will own features end-to-end, work with AI coding agents, and drive performance, security, and accessibility as the product evolves.