Principal Mobile Engineer, Upstart

Cash Line

$195.3-270.4k

+ Bonus + Equity. For candidates based in Canada, the annual base salary is $182,800—$230,000 CAD

TypeScript

React Native

Java

Android

Kotlin

Senior and Expert level

Austin

New York

San Francisco Bay Area

Remote from Canada, US

More information about location

AI lending marketplace

Job no longer available

AI lending marketplace

1001+ employees

B2CMarketplaceLendingFinancial Services

Job no longer available

$195.3-270.4k

+ Bonus + Equity. For candidates based in Canada, the annual base salary is $182,800—$230,000 CAD

TypeScript

React Native

Java

Android

Kotlin

Senior and Expert level

Austin

New York

San Francisco Bay Area

Remote from Canada, US

More information about location

1001+ employees

B2CMarketplaceLendingFinancial Services

Company mission

To enable effortless credit based on true risk.

Job

Company

Role

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 strong 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

Our take

Based in San Mateo, California, Upstart is piositioning itself as a leading AI lending marketplace, connecting millions of consumers with more than 100 banks and credit unions. In a market where credit access can be limited by traditional scoring methods, Upstart aims to make lending fairer and more accessible by using technology to better understand each borrowers true potential.

Upstart builds AI and cloud-based tools that help lenders approve more borrowers at lower rates. Its models analyze thousands of variables (not just credit scores) to predict creditworthiness more accurately. And through its platform, consumers can access personal, auto, and home-equity loans, as well as smaller "relief" loans, all through a seamless digital experience.

So far, its success is reflected in its high loan automation rate (over 90% of loans are fully processed without human intervention) and the billions in loan originations it has facilitated. The company continues to refine its AI models and expand its offerings, and in 2026 earned provisional approval to establish "Upstart Bank" as a bank in the US.

Freddie

Company Specialist at Welcome to the Jungle

Insights

Top investors

-16% employee growth in 12 months

Glassdoor (3.6)

Trustpilot (4.9)

Company

Funding (last 2 of 6 rounds)

Apr 2019

$50m

SERIES D

Mar 2017

$32.5m

SERIES D

Total funding: $135.7m

Company 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

Company HQ

South San Mateo, San Mateo, CA

Leadership

David Girouard

(Founder & Executive Chair)

They started their career at Accenture and Booz Allen & Hamilton before working in Product Management at Apple and Virage. They left their role of 8 years as President of Enterprise at Google to found Upstart in March 2012.

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