Senior Mobile Software Engineer, ThredUp
+ Employee Stock Purchase plan
Fashion resale platform
Be an early applicant
Fashion resale platform
501-1000 employees
Be an early applicant
+ Employee Stock Purchase plan
501-1000 employees
Company mission
To inspire a new generation to think secondhand first.
Role
Who you are
- 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
What the job involves
- 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
Application process
- End Date: July 17, 2025
Our take
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.
ThredUp provides an online marketplace for the buying and selling of secondhand fashionwear, offering affordable prices on discount clothing whilst promising a regulated and consistent approach to quality and cleanliness standards. The company acquires its clothing through sellers sending packages of clothing, which the company then sifts through to decide what is sellable and what should be returned.
The company went public in 2021 and immediately acquired Remix, a European second-hand fashion outlet, as part of its international expansion plans. It has however struggled to achieve profitability thanks to global economic turmoil and a glut of new clothing in the fashion industry causing prices to drop sharply. It is focusing on reducing its operating costs and expanding its storage capacity, and is expected by analysts to weather the current conditions in good form.
Freddie
Company Specialist at Welcome to the Jungle
Insights
0% employee growth in 12 months
Company
Funding (last 2 of 7 rounds)
Aug 2019
$100m
SERIES F
Sep 2015
$81m
SERIES E
Total funding: $232.9m
Company benefits
- 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
Company HQ
Old Oakland, Oakland, CA
Leadership
James Reinhart
(CEO)Has an MBA from Harvard Business School and started out in teaching. Also co-founded the Beacon Education Network.
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