Senior Mobile Software Engineer, ThredUp

• 5+ years of production-level mobile software engineering experience
• Proven proficiency in developing native mobile applications for iOS (Swift/Objective-C) primarily and Android (Kotlin/Java) secondarily
• Strong understanding of mobile design patterns, performance optimization, and distributed systems
• Familiarity with modern mobile analytics and backend integration (REST and GraphQL) for real-time functionality
• Experience integrating AI/ML features into mobile applications or using data-driven insights to improve user engagement
• Strong experience adopting AI tools in mobile software engineering lifecycle
• Experience with continuous integration, test automation, and monitoring
• Ability to work in a cross-functional team and strong product comprehension
• (Bonus) E-commerce and marketplaces experience

• At ThredUp, we have built the most powerful resale platform in the world
• We have a New Ventures team of engineers working to revolutionize the clothing industry towards a more circular fashion future
• Few recent examples are the Resale-as-a-service partnership program for fashion brands, marketplace partnership program for business sellers, wholesale consignment partnership program, and other business programs
• We have already established sound partnerships throughout 2020-2025, and we are rapidly extending our partnerships
• Our mobile apps serve as a critical component of our seamless resale platform, connecting users to high-quality, sustainable fashion options on the go
• We are seeking a skilled mobile engineer who will lead the design and development of our flagship mobile applications for both iOS and Android
• You will be a key player in driving innovation—exploring ways to integrate modern technologies, including AI enhancements, to elevate user engagement and engineering productivity
• You will collaborate with a diverse team of product designers, product managers, and engineers dedicated to revolutionizing the resale industry
• In This Role You'll Get To:
• Architect, develop, and maintain robust mobile applications for iOS and Android platforms
• Write clean, maintainable, and efficient code while ensuring app performance, quality, and responsiveness
• Identify opportunities to integrate AI/ML features to enhance user experience
• Leverage cross-platform frameworks where appropriate to streamline development while maintaining native performance
• Set realistic timelines with effective communication to technical/business stakeholders
• Champion best practices in applying AI for increased productivity in mobile development, including code reviews, testing automation, and continuous integration

• End Date: July 17, 2025

• Competitive salary (we leverage market data) + stock
• Employee stock purchase plan
• Flexible PTO (take the time you need) + 13 company holidays (US offices)
• Paid Sabbatical after 3 years of full time employment
• Generous paid parental leave for new mothers and fathers
• Medical, dental, vision, 401k, life and disability insurance offered

Total funding: $232.9m

Over 40% of Gen Z consumers claim to have bought used clothing as opposed to 20% of Gen X and Boomers. Yet, despite this change in fashion trends, consumers must often rely on brick-and-mortar thrift stores and unregulated second-hand eCommerce marketplaces in order to access to find pre-owned clothing.