Junior Software Development Engineer - Backend, Catalog

Summary

Join OfferUp's backend development team and own features from concept to completion. Collaborate with cross-functional teams to design and implement new features, analyze attacker techniques, and improve engineering excellence. Develop highly scalable systems using machine learning and other technologies. This role requires 3+ years of software engineering experience, including web services and data analysis. Strong coding skills in Java, Python, Scala, Golang, or a similar language are essential, along with a BS or MS in a related field. The position is available outside the US only.

Requirements

• 3+ years of professional software engineering experience, of which at least 1 was devoted to web services
• Experience performing data analysis and translating the results into business recommendations
• 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
• BS or MS in Computer Science, Computer/Software Engineering, Information Systems/Technology, Information Science, or a related discipline
• Excellent communication skills, both written and spoken (fluency in English required)

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 Trust & Safety engineering team
• Collaborate with OfferUp-wide engineering teams to improve processes, surface common pain points, develop solutions, and evangelize best practices
• Develop highly scalable classifiers and tools leveraging machine learning, data regression, and rules-based models
• Identify when to replace and when to rebuild legacy systems
• Participate in reasonable on-call rotations with the rest of the team
• Support, mentor, and help other engineers on the team

Preferred Qualifications

• Experience with Identity, authentication, and authorization systems
• Experience with anomaly detection, bot detection, machine learning, pattern recognition and/or data mining
• Experience in building microservices
• Experience with cloud infrastructure AWS