# Senior Software Engineer, Mobile

**Company:** [Upstart](https://hotfix.jobs/companies/upstart)
**Location:** Remote
**Role:** Mobile Engineering
**Salary:** $167k – $231k/yr
**Experience:** 4+ years
**Skills:** React Native, iOS, Android, Swift, objective-c, Kotlin, Java, mobile performance, memory management
**Posted:** 2026-07-14

> Senior Mobile Engineer building and scaling React Native apps for Upstart's borrower servicing experience across iOS and Android. Requires 4+ years experience, React Native expertise, and native platform familiarity to drive key metrics like payment success and user satisfaction.

## Job Description

## How you’ll make an impact

- Build and maintain user-facing features in our React Native mobile apps across iOS and Android.
- Design and implement mobile components and subsystems that are performant, maintainable, and scalable across platforms.
- Collaborate with product and design teams to scope, implement, and launch features that align with user and business needs.
- Work with backend engineers to define mobile-specific APIs and improve client-server integration patterns.
- Identify and resolve performance or reliability issues in the mobile experience.
- Participate in code reviews, architecture discussions, and technical planning to raise engineering quality across the team.
- Support a strong mobile engineering culture through mentorship, collaboration, and a focus on continuous improvement.

## Minimum Qualifications

- Bachelor’s degree in Computer Science, Engineering, or Mathematics, or a related field (or its equivalent) and 4 years of experience.
- Experience building in React Native, and familiarity with at least one native platform (e.g., Swift/Objective-C for iOS or Kotlin/Java for Android).
- Understand mobile performance, memory management, and platform-specific constraints.
- Communicate effectively with cross-functional partners in product, design, and backend engineering.
- Take ownership of your work and are comfortable delivering complex features from planning through release.
- Balance speed and quality, and advocate for maintainable, scalable engineering solutions.
- Contribute to team culture and engineering practices through feedback, mentoring, and collaboration.
- Embrace a growth mindset and enjoy learning from others while helping teammates grow.

## Preferred Qualifications

- Helped launch or scale a React Native app on the Android platform.
- Experience with mobile analytics, push notifications, deep linking, or A/B testing frameworks.
- Worked in a fast-paced product company where mobile was a primary user touchpoint.

## Similar roles

- [Senior React Native Engineer](https://hotfix.jobs/jobs/3e0ec9a9-eb02-49aa-b51d-1d4dc08aea29) - Mattermost - Remote - $165k – $225k/yr
- [Senior Mobile Cross Platform Engineer](https://hotfix.jobs/jobs/a99075f9-5f84-440f-b5ef-8c287b5dec59) - Chime - New York, NY - $164k – $227k/yr
- [Senior Software Engineer, Mobile](https://hotfix.jobs/jobs/2a19bc7f-e2fb-47ae-9d18-2f69a141b396) - Prove AI - Remote - $170k – $210k/yr
- [Sr. Mobile Engineer, L4](https://hotfix.jobs/jobs/5225ee9e-1861-4acc-96a5-5e51be3e01d5) - Betterment - New York, NY - $170k – $195k/yr
- [Front End Engineer (React Native)](https://hotfix.jobs/jobs/dc78fc1e-aeac-482c-a455-f6b29d237ca3) - Bilt Rewards - New York, NY - $160k – $280k/yr

**Apply:** https://hotfix.jobs/jobs/9eea1ed3-a681-4674-8844-efd2bbd666a8
**Canonical:** https://hotfix.jobs/jobs/9eea1ed3-a681-4674-8844-efd2bbd666a8