OfferUp is looking to maintain and evolve its client engineering platform and app ecosystem, as well as build systems to detect and prevent fraudulent behavior in its marketplace, focusing on key issues such as account takeovers, Phishing, Payment chargebacks, and Prohibited Items.
Requirements
- 5+ years of professional software engineering experience, of which at least 3 were devoted to web services
- 2+ years of experience in real-time messaging systems
- Experience performing data analysis and translating the results into business recommendations
- Experience in working with data-driven applications at scale
- Strong coding skills in Java, Python, Scala, Golang, or any other modern programming language, coupled with strong knowledge in object-oriented design and microservices architecture
- Proficiency in native development languages: Swift/Objective-C (iOS) and Kotlin/Java (Android)
- Experience with cloud infrastructure AWS
Responsibilities
- Work collaboratively with cross-functional teams (risk analysts, data science, and operations) to design and implement new features
- Analyze the latest attacker techniques and apply solutions to detect them holistically and stop them proactively
- Drive engineering and operational excellence across the Core engineering team
- Collaborate with OfferUp-wide engineering teams to improve processes, surface common pain points, develop solutions, and evangelize best practices
- Identify when to replace and when to rebuild legacy systems
- Develop highly scalable classifiers and tools leveraging machine learning, data regression, and rules-based models
- Ensure app stability by identifying and resolving crashes, freezes, and network errors across both React Native and native layers
Other
- BS or MS in Computer Science, Computer/Software Engineering, Information Systems/Technology, Information Science, or a related discipline
- Participate in reasonable on-call rotations with the rest of the team
- Support, mentor, and help other engineers on the team
- Mentor and guide junior engineers, fostering best practices for frontend and native development
- OfferUp provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, sex, national origin, age, disability, or genetics
