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Principal Software Engineer, Mobile

Engine

$174,845 - $242,000
Nov 7, 2025
Remote, US
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At Engine, we’re transforming business travel into something personalized, rewarding, and simple by building a platform that brings together corporate travel, a powerful charge card, and modern spend management in one place.

Requirements

  • 8–12+ years of experience building and shipping high-quality mobile applications at scale
  • Deep expertise with React Native and experience designing large, production-grade applications
  • Strong understanding of mobile architecture, performance tuning, and platform best practices
  • Experience with native iOS (Swift/SwiftUI) and/or Android (Kotlin/Jetpack) development is a strong plus
  • Proven ability to lead technical initiatives and influence cross-functional teams
  • Strong systems thinking and a bias toward scalable frameworks and reusable patterns
  • Experience mentoring Staff and Senior Engineers and shaping technical culture

Responsibilities

  • Lead technical direction and long-term architectural vision for our mobile applications (built primarily in React Native)
  • Act as the principal hands-on contributor, setting standards for engineering quality, performance, and scalability
  • Drive alignment across mobile and web teams to ensure a consistent and unified user experience
  • Collaborate with product and design leadership to shape strategy, execution plans, and sequencing for major mobile initiatives
  • Establish scalable patterns, frameworks, and development standards across the mobile organization
  • Partner with design and platform engineering on system-wide initiatives such as shared components, navigation, and design systems
  • Champion engineering excellence through architecture reviews, performance optimization, and technical rigor

Other

  • Excellent communication skills and the ability to drive clarity and alignment across teams
  • Ability to mentor Staff and Senior Engineers and shape technical culture
  • Strong ability to lead technical initiatives and influence cross-functional teams
  • Ability to work in a hybrid-hub model, whether in one of our amazing offices or fully remote
  • Ability to apply early, as we may begin reviewing applications before the deadline