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As a senior leader within App Platform Engineering, you will play a critical role in shaping the future of Whatnot’s mobile experience. You will lead teams responsible for the mobile foundations that power iOS and Android, partnering closely with product, design, infrastructure, and other platform teams to ensure our apps are fast, reliable, observable, and built to scale. This role is ideal for a leader who combines strong mobile technical instincts with organizational leadership, and who thrives in highly cross-functional environments. You will help set direction, build alignment, and raise the bar for mobile quality and performance across the company.
Job Responsibility:
Lead and mentor multiple mobile-focused engineering teams, supporting both iOS and Android development and fostering strong technical leadership across platforms
Define and drive a long-term mobile platform strategy, balancing near-term delivery with foundational investments in performance, reliability, and developer experience
Champion mobile performance and observability, ensuring teams deeply understand app health, user experience metrics, and production behavior at scale
Partner closely with product, design, infrastructure, and data teams to ensure mobile architecture and execution align with broader company goals
Drive clarity and alignment across teams by setting expectations, building buy-in, and navigating complex cross-functional tradeoffs
Establish and evolve best practices around mobile architecture, testing, release quality, and technical debt management
Support and grow senior ICs and managers, creating clear growth paths and a strong bench of mobile leadership
Requirements:
10+ years of experience in software engineering, with significant experience leading mobile teams (iOS, Android, or both)
A strong technical foundation in mobile application architecture, performance optimization, and production reliability
Deep familiarity with mobile observability and performance tooling, and a strong intuition for diagnosing real-world app issues
Experience leading teams through ambiguous, high-impact initiatives that require cross-team coordination and influence
A collaborative leadership style — comfortable driving decisions and navigating trade-offs
Proven ability to scale teams, develop leaders, and create healthy, high-performing engineering cultures
Comfort operating at both the strategic and tactical levels, with the judgment to know when to zoom in and when to step back
Nice to have:
Bonus: experience working closely with backend or platform teams, or contributing to backend systems directly earlier in your career
What we offer:
Flexible Time off Policy and Company-wide Holidays (including a spring and winter break)
Health Insurance options including Medical, Dental, Vision
Work From Home Support
Home office setup allowance
Monthly allowance for cell phone and internet
Care benefits
Monthly allowance for wellness
Annual allowance towards Childcare
Lifetime benefit for family planning, such as adoption or fertility expenses
Retirement
401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationally
Monthly allowance to dogfood the app
Parental Leave
16 weeks of paid parental leave + one month gradual return to work