Principal Mobile Software Engineer

Upstart is a digital-first company that is seeking a Principal Mobile Software Engineer to lead efforts to scale and refine our React Native architecture while partnering closely with product, design, and backend teams to ship impactful, high-quality features.

Requirements

• 8+ years of professional software development experience, including meaningful contributions to production mobile apps.
• Have built and maintained features in both React Native and at least one native platform (e.g., Swift/Objective-C for iOS or Kotlin/Java for Android).
• Understand the nuances of mobile performance, memory management, and platform-specific challenges.
• Have led architecture planning and helped engineering teams make informed tradeoffs.
• Communicate early and often with cross-functional partners in product, design, backend, and QA to ensure alignment and shared understanding.
• Take ownership of your work from design through delivery, and value long-term thinking over quick fixes.
• Appreciate the strength of diverse perspectives and thrive on being part of an inclusive, collaborative team.
• Embrace a growth mindset, value mentorship, and enjoy helping others grow.

Benefits

• Competitive Compensation (base + bonus & equity)
• Comprehensive medical, dental, and vision coverage with Health Savings Account contributions from Upstart
• 401(k) with 100% company match up to $4,500 and immediate vesting and after-tax savings
• Employee Stock Purchase Plan (ESPP)
• Life and disability insurance
• Generous holiday, vacation, sick and safety leave
• Supportive parental, family care, and military leave programs
• Annual wellness, technology & ergonomic reimbursement programs
• Social activities including team events and onsites, all-company updates, employee resource groups (ERGs), and other interest groups such as book clubs, fitness, investing, and volunteering
• Catered lunches + snacks & drinks when working in offices