Senior Software Engineer – Mobile

Human Interest

. Build and ship polished iOS and Android experiences for employees and 401(k) plan administrators .

Posted 11/3/2026full-timeRemote • United StatesSenior💰 $190,000 - $230,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates deep expertise in native mobile development with Swift, SwiftUI, Kotlin, and cross-platform frameworks like React Native and Flutter. Proven ability to architect mobile applications, optimize performance, and ensure accessibility while collaborating effectively with cross-functional teams.

Highest-signal resume keywords

Native Mobile DevelopmentCI/CD ManagementAI Coding ToolsApp ArchitectureAutomated UI Testing

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

SwiftSwiftUIKotlinJetpack ComposeReact NativeFlutterConcurrencyAsynchronous ProgrammingData StructuresAPI Contract Design

Soft Skills

Strong Verbal CommunicationStrong Written CommunicationProactive MindsetEmpathetic MindsetAttention to UI Craft

Tools & Technologies

CodexClaude CodeCursorNodeTypeScriptAWS

Certifications & Qualifications

Bachelor's Degree in Computer ScienceMaster's Degree in Computer Science

Industry Keywords

Mobile FintechConsumer Mobile AppsAccessibilityFeature FlagsCrash-Free Rates

Tech Stack

Tools & technologies

AndroidAWSFlutteriOSKotlinNode.jsReactReact NativeSwiftTypeScript

About the role

Key responsibilities & impact

Build and ship polished iOS and Android experiences for employees and 401(k) plan administrators
Architect a modern, modular mobile codebase from scratch with concurrency, clean dependency management, and testability
Direct AI coding agents across the development lifecycle and shape agentic engineering workflows
Solve mobile fintech problems involving real-time balances, secure authentication, biometrics, and sensitive financial data
Own CI/CD, phased App Store and Play Store rollouts, feature flags, and automated UI testing
Optimize crash-free rates, app ratings, release reliability, animations, haptics, data visualization, and accessibility
Partner with Design on mobile experience details
Partner with backend engineers on API contracts and backend-driven UI
Help define native and cross-platform mobile architecture direction
Collaborate with the engineering manager, Product, and Design while owning key outcomes

Requirements

What you’ll need

5+ years of experience building and maintaining software in production
Experience shipping and owning consumer mobile apps through many App Store and Play Store release cycles
Deep expertise in native mobile development with Swift and SwiftUI, or Kotlin and Jetpack Compose, or cross-platform frameworks such as React Native, Flutter, or Kotlin Multiplatform
Strong opinions on app architecture, performance, and testing
Experience owning features end to end, from technical design through release and iteration
Hands-on, regular use of agentic coding tools such as Codex, Claude Code, and Cursor on production work
Sound judgment on appropriate AI use and ability to keep agent-generated code correct, secure, and well-tested
Strong computer science fundamentals, including data structures, concurrency, and asynchronous programming
Understanding of mobile architecture trade-offs, performance tuning, device farms, automated UI testing, client-side telemetry, and API contract design
Familiarity or desire to work with Node, TypeScript, Kotlin, and AWS
Commitment to accessibility and well-tested, maintainable code
Strong verbal and written communication skills
Strong product sense and attention to UI craft
Proactive, empathetic mindset and bias toward ownership
Bachelor's or Master's degree in Computer Science, Engineering, or a related field typically required

Benefits

Comp & perks

401(k) with dollar-for-dollar employer match up to 4% of compensation, immediately vested, with $0 plan fees
Top-of-the-line health plans
Dental and vision insurance
Competitive time off and parental leave
Addition Wealth: unlimited access to digital tools, financial professionals, and a knowledge center for equity and financial wellness
Lyra enhanced mental health support for employees and dependents
Carrot fertility healthcare and family-forming benefits
Candidly student loan resource for employees and families
Monthly work-from-home stipend
Quarterly lifestyle stipend
Team-building experiences, including virtual social events and team offsites