Senior Software Development Engineer - iOS

OfferUp is changing how people buy and sell locally by making it as easy as taking and sharing a photo from your phone. We are a rapidly growing team in Seattle looking to bring on more passionate, motivated, and curious people who want to be a part of our fast growing marketplace.

We are looking for a passionate Sr. iOS Developer who will help make a strong impact on the OfferUp iOS app. This person will also be a Mentor and a Senior contributor who appreciates collaboration and team work, while having a good time.

• You will have 6+ years of professional software engineering experience, at least 3-4 years of which was devoted exclusively to iOS
• You will help in the creation and implementation of significant portions of the OfferUp iOS app - Crafting clean and well-documented code and maintaining an active interest in the overall success of what we're building.
• Deep understanding of Objective-C and using Cocoa and Cocoa Touch framework classes
• You have a background in Object-oriented programming with knowledge of algorithms, data structures, and design patterns
• Bachelors in Computer Science or a related field
• Eligible to work in the United States

Nice to have:

• Experience with CoreData, CoreLocation, MapKit, Auto Layout, push notifications
• Understanding of memory management (ARC and non-ARC) and MVVM patterns
• Understanding of concurrency issues, threads and familiarity with GCD
• Experience with JSON and interacting with RESTful services
• Able to use tools to optimize performance and diagnose issues at runtime
• Familiarity with iTunes Connect for beta and store deployment
• Working with a marketplace application
• Working knowledge of e-commerce payment systems
• Experience with Google Analytics and Jenkins is a plus