Senior Software Engineer - Mobile

Accountabilities

• Design, build, and ship high-quality mobile experiences for iOS and Android, supporting employees managing retirement savings and plan administrators managing retirement plans.

• Establish a modern, modular mobile codebase from scratch, with maintainable architecture, modern concurrency, clean dependency management, and testability.

• Direct AI coding agents throughout the software development lifecycle and help define effective agentic engineering workflows and quality standards.

• Develop secure fintech capabilities, including accurate real-time balances, secure authentication, biometric access, and protection of sensitive financial information.

• Own mobile release operations, including CI/CD pipelines, phased App Store and Google Play releases, feature flags, and automated UI testing.

• Monitor and improve app performance, crash-free sessions, reliability, and app store ratings through telemetry and continuous iteration.

• Collaborate with Product and Design to deliver accessible, intuitive interfaces, including polished animations, haptics, and data visualizations.

• Partner with backend engineers on API contracts, backend-driven UI, and decisions shaping the team's native and cross-platform architecture.

• Contribute to technical direction, code reviews, engineering standards, and knowledge sharing across the team.

Requirements:

• At least 5 years of professional experience building and maintaining production software, including ownership of consumer mobile applications across multiple App Store and Google Play release cycles.

• Deep expertise in either native mobile development (Swift and SwiftUI, or Kotlin and Jetpack Compose) or cross-platform frameworks such as React Native, Flutter, or Kotlin Multiplatform.

• Strong understanding of mobile architecture, performance optimization, testing strategies, data structures, concurrency, and asynchronous programming.

• Proven ability to own features end to end, from technical design and implementation through release, monitoring, and iteration.

• Hands-on experience regularly using agentic coding tools such as Codex, Claude Code, or Cursor in production engineering work, with sound judgment around code quality, security, and testing.

• Familiarity with automated mobile testing tools such as XCUITest, Espresso, or Appium; device farms; client-side telemetry platforms such as Sentry, Firebase, or Datadog; and API contract design.

• Ability to work with backend technologies such as Node.js, TypeScript, Kotlin, and AWS.

• Commitment to accessibility, maintainable code, and well-tested software.

• Strong communication and collaboration skills, product awareness, attention to detail, and a proactive approach to solving customer problems.

• Experience mentoring engineers through code reviews and contributing to a strong engineering culture.

• A bachelor's or master's degree in Computer Science, Engineering, or a related field is typically expected.

• Experience building a mobile product from 0 to 1 and working in fintech, financial services, or other security-sensitive or regulated environments is a plus.

Benefits:

• Base salary: $190,000–$230,000, depending on geographic location, relevant skills, and experience.

• Potential additional compensation through bonuses and equity, depending on the position.

• Employer 401(k) match of 100% up to 4% of compensation, immediately vested, with no plan fees.

• Medical, dental, and vision insurance.

• Competitive paid time off and parental leave.

• Access to financial wellness resources and professional financial guidance.

• Enhanced mental health support for employees and dependents.

• Fertility care and family-forming benefits.

• Student loan planning and repayment resources.

• Monthly work-from-home stipend and quarterly lifestyle stipend.

• Virtual team activities and in-person team offsites.

• Remote work flexibility within the United States.