Principal Mobile Engineer, React Native (Remote)

About Engine

At Engine, we’re transforming business travel into something personalized, rewarding, and simple. For too long, managing travel and spend has been overwhelming and fragmented — we’re here to change that. We believe the future of travel should be seamless and powered by technology that delights customers at every step. That’s why we’re building a platform that brings together corporate travel, a powerful charge card, and modern spend management in one place.

To make this vision real, we’re looking for exceptional, mission-driven people to help redefine how businesses manage and experience travel.

More than 20,000 companies already rely on Engine to support over 1 million travelers and billions in annual bookings each year. Cash flow positive with rapid growth, we pair exclusive Engine-only rates, industry-leading rewards, and intelligent automation to help businesses save money while delivering world-class personalization and convenience.

Backed by Telescope Partners, Blackstone, and Permira, Engine has been recognized as one of the fastest-growing travel and fintech platforms in North America, with honors including the Deloitte Fast 500 and Built In’s Best Places to Work.

Your Mission

As a Principal Mobile Engineer at Engine, you will serve as the most senior hands-on technical leader for mobile, shaping the long-term vision and technical foundation of our mobile platform. You will operate as a technical north star across teams, defining architecture, setting standards, and guiding how we build a unified, high-performance mobile experience.

This role sits at the center of our mobile strategy as we scale our travel platform and evolve our mobile-first experience. You will work closely with Product, Design, Web, and Platform teams to align roadmaps, establish consistent patterns, and ensure our mobile investments support both near-term execution and long-term platform health. Using React Native, with the ability to go deep into native iOS and Android when needed, you will influence architecture across multiple teams while remaining deeply hands-on.

Here’s what you’ll take charge of

• Set Technical Direction: Own the long-term architectural vision for Engine’s mobile applications, ensuring scalability, performance, reliability, and maintainability as the platform grows.

• Lead High-Impact Development: Act as a principal hands-on contributor on complex, high-visibility initiatives, setting the standard for engineering excellence and execution quality.

• Drive Platform Alignment: Partner across mobile, web, and platform teams to create cohesive architectures, shared patterns, and a consistent user experience.

• Establish Standards and Systems: Define frameworks, development practices, and architectural patterns that enable teams to move faster while maintaining a high bar.

• Shape Strategy and Roadmaps: Collaborate with product and design leadership to influence sequencing, investment areas, and technical strategy for mobile.

• Champion Engineering Excellence: Lead architecture reviews, guide performance optimization efforts, identify technical risks, and raise the overall technical bar.

• Mentor and Multiply Impact: Coach and mentor Staff and Senior Engineers, helping grow future technical leaders and scaling your impact through others.

• Serve as a Mobile Authority: Act as a subject matter expert for mobile across the organization, advising on platform decisions, trade-offs, and long-term evolution.

What You’ll Bring to Engine

• Experience: 10+ years building and scaling mobile applications, including ownership of large, production-grade mobile platforms.

• Technical Leadership: Deep expertise in React Native, strong mobile architecture skills, and a proven ability to design systems that scale across teams and products.

• Platform Depth: Experience with native iOS (Swift/SwiftUI) and/or Android (Kotlin/Jetpack), including performance tuning and native module development.

• Organizational Influence: A track record of leading complex initiatives, aligning stakeholders, and driving technical direction through influence rather than authority.

• Systems Mindset: Strong architectural judgment, comfort operating in ambiguity, and a bias toward durable, reusable solutions.

• People Impact: Demonstrated success mentoring senior engineers, shaping technical culture, and raising the bar across an organization.

Applications for this role will be accepted through 3/25/2026 or until the role is filled. We encourage you to apply early, as we may begin reviewing applications before the deadline

Compensation
Our compensation packages are based on several factors, including your experience, expertise, and location. In addition to a competitive base salary, total compensation may include equity and/or variable pay (OTE). Your recruiter will share your complete compensation package as you move through the process.

Base Pay Range
$174,845—$242,000 USD

The Engine Edge: Perks & Compensation
We believe in rewarding great work with great benefits:

• Compensation: Competitive base pay tied to role and experience, with opportunities for bonuses, commissions, and equity.

• Benefits: Check out our full list at engine.com/culture.

• Environments for Success: Different roles have different needs in terms of the environments that drive success which is why we have a hybrid-hub model. Whether you are in one of our amazing offices or fully remote, we’ll make sure you have what you need to succeed.

Perks and benefits may vary based on employment type, location, and more.

Ready to Build the Future of Work Travel?
Join us on our mission to transform how work travel works—for businesses, for travelers, and for the industry. Apply now and let’s make travel simpler, smarter, and more enjoyable—together.