[Remote] Senior Software Engineer, Mobile

Note: The job is a remote job and is open to candidates in USA. Upstart is an AI lending marketplace focused on reducing the cost and complexity of borrowing. The Senior Software Engineer, Mobile will design, build, and maintain React Native applications for iOS and Android, collaborating with product, design, and backend teams to deliver scalable mobile features and improve the borrower experience.

Responsibilities

• 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

Skills

• Bachelor's degree in Computer Science, Engineering, or Mathematics, or a related field (or its equivalent) and 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
• This role is available in the following locations: Remote
• The team operates on the East/West coast time zones
• The majority of our employees can live and work anywhere in the U.S but are encouraged to to still spend high quality time in-person collaborating via regular onsites. The in-person sessions' cadence varies depending on the team and role; most teams meet once or twice per quarter for 2-4 consecutive days at a time
• Have helped launch or scale a React Native app on the Android platform
• 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

Benefits

• Flexible digital-first work arrangement, with most Upstarters able to work remotely from wherever they thrive in the US and Canada
• Competitive compensation, including bonus opportunities and annual equity grants that vest quarterly
• Retirement benefits, 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, including medical, dental, vision, and wellness resources for US employees, 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
• 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 physical and emotional well-being and personal development
• Annual productivity allowance to invest in relevant tools and resources needed to do your best work
• 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 the offices in the Bay Area, Austin, Columbus, and New York City (opening Summer 2026)

Company Overview

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