Back to jobs
New

Principal Mobile Engineer, React Native (Remote)

Remote - USA

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.

Create a Job Alert

Interested in building your career at Engine? Get future opportunities sent straight to your email.

Apply for this job

*

indicates a required field

Resume/CV*

Accepted file types: pdf, doc, docx, txt, rtf

Cover Letter

Accepted file types: pdf, doc, docx, txt, rtf

Select...
Select...

If you’ll require Engine to commence, i.e., “sponsor,” an immigration or work permit case in order to employ you, either now or at some point in the future, then you should answer yes. An example of an immigration or work permit case that may require sponsorship now or in the future would be an H-1B or other employment-based work permit sponsorship.

Select...

Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in Engine’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

Select...
Select...
Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.

Select...

Voluntary Self-Identification of Disability

Form CC-305
Page 1 of 1
OMB Control Number 1250-0005
Expires 04/30/2026

Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to learn more about the law or this form, visit the U.S. Department of Labor’s Office of Federal Contract Compliance Programs (OFCCP) website at www.dol.gov/ofccp.

How do you know if you have a disability?

A disability is a condition that substantially limits one or more of your “major life activities.” If you have or have ever had such a condition, you are a person with a disability. Disabilities include, but are not limited to:

  • Alcohol or other substance use disorder (not currently using drugs illegally)
  • Autoimmune disorder, for example, lupus, fibromyalgia, rheumatoid arthritis, HIV/AIDS
  • Blind or low vision
  • Cancer (past or present)
  • Cardiovascular or heart disease
  • Celiac disease
  • Cerebral palsy
  • Deaf or serious difficulty hearing
  • Diabetes
  • Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders
  • Epilepsy or other seizure disorder
  • Gastrointestinal disorders, for example, Crohn's Disease, irritable bowel syndrome
  • Intellectual or developmental disability
  • Mental health conditions, for example, depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD
  • Missing limbs or partially missing limbs
  • Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s) and/or other supports
  • Nervous system condition, for example, migraine headaches, Parkinson’s disease, multiple sclerosis (MS)
  • Neurodivergence, for example, attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities
  • Partial or complete paralysis (any cause)
  • Pulmonary or respiratory conditions, for example, tuberculosis, asthma, emphysema
  • Short stature (dwarfism)
  • Traumatic brain injury
Select...

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.