Who you are

- 8+ years of software engineering experience, including substantial experience building and shipping mobile applications with React Native and TypeScript

- Strong native Android depth in Kotlin and/or Java, with experience shipping or launching native Android applications in production

- Proven track record leading cross-team mobile initiatives, platform migrations, or new mobile product launches in production environments

- Experience shipping consumer-facing mobile products at scale with strong attention to performance, reliability, and user experience

- Demonstrated technical leadership as a senior individual contributor, including architecture ownership, mentorship, and influence across teams

What the job involves

- Upstart’s Cash Line team builds and scales the mobile experiences that support our Cash Line products

- This role will strengthen the team’s mobile foundation across its codebase and help drive a newly approved Android app launch on an aggressive timeline this year
- The work is highly cross-functional and high-visibility, with direct impact on product strategy, engineering execution, and the customer experience

- As the Principal Mobile Engineer on the Cash Line team, you will be the senior technical owner for the team’s mobile work

- You’ll operate primarily as a mobile generalist and React Native specialist, elevating the team’s mobile codebase while bringing the native Android depth needed to lead the Android launch this year

- After launch, you’ll continue as the team’s mobile specialist,



shaping long-term mobile architecture and quality across React Native and native Android surfaces

- This is a high-impact individual contributor role with meaningful technical leadership, cross-team influence, and mentorship responsibility

- Serve as the primary mobile engineer and React Native specialist for the Cash Line team, raising the quality, scalability, and velocity of the team’s mobile codebase

- Lead Android development for the team and help deliver against Upstart’s approved Android launch plan this year, translating ambitious business goals into pragmatic technical milestones and execution plans

- Set technical direction for the team’s mobile architecture, evolving a robust foundation across React Native and native Android surfaces

- Partner closely with product, design, and engineering stakeholders to translate roadmap priorities into durable mobile solutions

- Raise the bar for engineering excellence through technical leadership, design reviews, mentorship, and pragmatic execution in ambiguous, high-visibility problem spaces

- After launch, continue as the team’s mobile specialist, bringing broad React Native fluency alongside deep Android expertise to support the full Cash Line mobile stack

Benefits

- Comprehensive health plans
- 401k Plan

- Annual wellness reimbursement

- Disability insurance

- Generous vacation policy

- Flexible time off

- Parental leave
- Family forming benefits through Carrot

- Technology equipment budget

- Personal development budget
- Various clubs and extracurricular activities

- Catered lunches
- Fully stocked micro-kitchen

📌 Principal Mobile Engineer (Austin)
🏢 Upstart
📍 Austin