[Hiring] Principal Mobile Engineer @Upstart

Role Description

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. 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.

Qualifications

• 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.

Requirements

• 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.

Benefits

• Competitive compensation, including base pay, bonus opportunities, and annual equity grants that vest quarterly.
• Retirement benefits to help you plan for the future, including a 401(k) or Group Retirement Savings Plan with a company match of $2 for every $1 contributed, up to $15,000 annually (USD in the US, CAD in Canada).
• Employee Stock Purchase Plan (ESPP) with discounted stock purchase options for eligible employees (US only).
• Comprehensive health coverage designed to support you and your family, including medical, dental, vision, and wellness resources for US and supplemental health coverage for Canada.
• Health Savings Account contributions from Upstart for eligible plans (US only).
• Income protection benefits, including life insurance and disability coverage for added financial security.
• Paid time off, sick leave, and company holidays, in line with local requirements.
• Paid family and parental leave to support caregiving and major life moments (duration varies by country).
• Family-centered benefits to support fertility, parenthood, and caregiving needs.
• 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 (US Only).
• 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, all-company updates, and employee resource groups (ERGs).
• Onsite perks, including catered lunches and fully stocked micro-kitchens when working from one of our offices in the Bay Area, Austin, Columbus, and New York City (opening Summer 2026!).