About Upstart
At Upstart, we’re united by a mission that matters: to radically reduce the cost and complexity of borrowing for all Americans. Every day, we bring creativity, experimentation, and advanced AI to reshape access to credit, helping millions move forward financially with clarity and confidence.
As the leading AI lending marketplace, we partner with banks and credit unions to expand access to affordable credit through technology that’s both radically intelligent and deeply human. Our platform runs over one million predictions per borrower using more than 1,800 signals, powering smarter, fairer decisions for millions of customers. But the numbers only hint at the impact. Every idea, every voice, and every contribution moves us closer to a world where credit never stands between people and their financial progress.
We’re proudly digital-first, giving most Upstarters the flexibility to do their best work from wherever they thrive, alongside teammates across 80+ cities in the US and Canada. Digital-first doesn’t mean distant. We’re intentional about in-person connection through team onsites, planning sessions, and moments that spark creativity and trust. And whether you choose to work primarily from home or collaborate in-person from one of our offices in Columbus, Austin, the Bay Area, or New York City (opening Summer 2026), you’ll have the support to work in the way that works best for you.
If you’re energized by tackling meaningful problems, excited to innovate with purpose, and motivated by work that truly matters, we’d love to hear from you.
As a Senior Mobile Software Engineer on Upstart’s Cash Line team, you’ll build mobile experiences for a new consumer credit product that gives customers always-on access to a reusable line of credit they can draw from, repay, and use again in real time. You’ll use React Native to ship high-quality features that directly shape how customers discover, access, and manage Cash Line in the mobile app.
This is a hands-on role for an engineer who wants to own end-to-end feature delivery, make strong technical decisions, and help define the mobile experience for a foundational new business line at Upstart. You’ll work closely with product, design, backend, and cross-functional partners to build thoughtful, reliable experiences in a space where speed, correctness, and customer trust all matter.
The TeamThe Cash Line team is building one of Upstart’s newest consumer products: a revolving credit experience designed to create a more durable, recurring relationship with customers beyond a one-time loan. As part of that work, the team is shaping the mobile experience for a product with broad visibility across the customer journey, from application and approval through ongoing account access and reuse.
We’re a fast-moving, highly cross-functional team working at the intersection of consumer product, real-time systems, and financial infrastructure. Our engineers partner closely with teams across product, growth, finance, compliance, and capital markets, and we value people who can combine strong product instincts with pragmatic execution in an ambiguous, high-impact environment.
What You’ll DoBuild and ship user-facing mobile features for Cash Line in React Native across iOS and Android as the product expands.
Design mobile components and systems that are scalable, maintainable, and reliable for a product that operates in real time and directly affects customers’ access to credit.
Partner closely with product, design, and backend engineers to scope, build, and launch experiences that balance customer needs, business goals, and technical quality.
Help define the mobile experience for a foundational new business line, contributing both to near-term feature delivery and longer-term platform direction.
Improve mobile developer velocity and product quality through better tooling, testing approaches, release practices, observability, and performance monitoring.
Work with backend partners to shape APIs and integration patterns that create smooth, resilient client-server experiences.
Identify and resolve performance, usability, and reliability issues in the mobile product, with a strong focus on long-term maintainability.
Contribute to engineering quality through code review, system design discussions, technical planning, and mentorship across the team.
- Bachelor’s degree in Computer Science, Engineering, or Mathematics, or a related field (or its equivalent) + 4 years of experience
- Have 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.
- Have helped launch or scale a React Native app on the Android platform.
- Are comfortable working with TypeScript or custom native modules.
- Have experience with mobile analytics, push notifications, deep linking, or A/B testing frameworks.
- Have worked in a fast-paced product company where mobile was a primary user touchpoint.
- Have contributed to internal tools, processes, or systems that improved mobile developer velocity or code quality.
Position Location - This role is available in the following locations: Remote, San Mateo, Columbus, Austin
Time Zone Requirements - This team operates across all U.S. time zones.
Travel Requirements - This team has regular on-site collaboration sessions. These occur 3 days per quarter at an Upstart office. If you need to travel to make these meetups, Upstart will cover all travel related expenses.
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At Upstart, your base pay is one part of your total compensation package. The anticipated base salary for this position is expected to be within the below range. Your actual base pay will depend on your geographic location–with our “digital first” philosophy, Upstart uses compensation regions that vary depending on location. Individual pay is also determined by job-related skills, experience, and relevant education or training. Your recruiter can share more about the specific salary range for your preferred location during the hiring process.
In addition, Upstart provides employees with target bonuses, equity compensation, and generous benefits packages (including medical, dental, vision, and 401k).
At Upstart, your base pay is one part of your total compensation package. The anticipated base salary for this position is expected to be within the below range. Your actual base pay will depend on your geographic location–with our “digital first” philosophy, Upstart uses compensation regions that vary depending on location. Individual pay is also determined by job-related skills, experience, and relevant education or training. Your recruiter can share more about the specific salary range for your preferred location during the hiring process.
In addition, Upstart provides employees with target bonuses, equity compensation, and generous benefits packages (including medical, dental, vision, and 401k).
What you'll love
At Upstart, our benefits are designed to support your health, financial well-being, family, and personal growth. Here’s what you can expect:
- Competitive compensation, including base pay, bonus opportunities, and annual equity grants that vest quarterly
- Generous 401(k) plan with Upstart matching $2 for every $1 contributed, up to $15,000 per year
- Employee Stock Purchase Plan (ESPP) with discounted stock purchase options for eligible employees
- Affordable medical, dental, and vision coverage, with multiple plan options - Upstart covers 90% to 100% of the cost depending on the plans you choose
- Health Savings Account contributions from Upstart for eligible plans
- Income protection benefits, including company-paid Basic Life, AD&D, and Short- and Long-Term Disability coverage, with options to purchase supplemental coverage
- Paid time off, sick and safe time, and company holidays
- Paid family and parental leave to support caregiving and major life moments
- Family-centered benefits through Carrot and Cleo, supporting fertility, parenthood, and caregiving
- Employee Assistance Program (EAP) offering mental health support and life-centered resources
- Financial wellness resources, including access to financial planning tools and a financial concierge service
- Annual wellness allowance to support your physical and emotional well-being and personal development, based on what matters most to you
- Annual productivity allowance to invest in relevant tools and resources you need to do your best work, no matter where you work from
- Connection and community through team events and onsites, all-company updates, and employee resource groups (ERGs)
- Onsite perks, including catered lunches and fully stocked micro-kitchens when working from one of our four offices, located in the Bay Area, Austin, Columbus, and New York City (opening Summer 2026!).
Upstart is a proud Equal Opportunity Employer. Just as we are dedicated to improving access to affordable credit for all, we are committed to inclusive and fair hiring practices.
If you require reasonable accommodation in completing an application, interviewing, completing any pre-employment testing, or otherwise participating in the employee selection process, please email [email protected]
https://www.upstart.com/candidate_privacy_policy
Skills Required
- 8+ years of professional software development experience
- Experience in React Native and at least one native platform (Swift/Objective-C or Kotlin/Java)
- Understanding of mobile performance, memory management, and platform-specific challenges
- Experience with architecture planning and engineering team trade-offs
- Strong communication skills with cross-functional teams
- Ownership of work from design through delivery
- Ability to appreciate diverse perspectives and collaborative work
What the Team is Saying
What We Do
Upstart is the leading AI lending marketplace, connecting millions of consumers to more than 100 banks and credit unions that leverage Upstart’s AI models and cloud applications to deliver superior credit products. With Upstart's AI, lenders can approve more borrowers at lower rates across races, ages, and genders, while delivering the exceptional digital-first experience customers demand. More than 80% of borrowers are approved instantly, with zero documentation to upload. Founded in 2012, Upstart’s platform includes personal loans, automotive retail and refinance loans, home equity lines of credit, and small-dollar “relief” loans. If you are energized by the impact you think you could make at Upstart, we'd love to hear from you!
Why Work With Us
Connection to our mission creates a special environment where people feel passionately about the impact they make in the world. Upstart is fast-paced, and we encourage ownership at all levels of the organization. As a result, culture at Upstart is driven by Upstarters. Upstarters are proactive, talented, multi-dimensional and collaborative.
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Upstart Offices
Remote Workspace
Employees work remotely.
Upstart has a digital-first model enabling most Upstarters can live and work anywhere in the U.S. We also offer in-person options from our office locations in San Mateo, California; Columbus, Ohio; Austin, Texas; and New York City, NY.
