Trust & Safety Investigator (Hybrid @ Bellevue, WA)

OfferUp • Bellevue, WA

9d • $33 • Hybrid

About The Position

The OfferUp Trust & Safety team plays an important role in helping keep OfferUp a safe and trusted local marketplace. We partner closely with Legal, Customer Service, Analytics, and law enforcement agencies to identify harmful activity, protect our users, and support investigations when needed. We’re looking for a highly curious and resourceful Investigator to join the team. This role is ideal for someone who naturally asks questions, enjoys digging into details, and likes solving problems others might overlook. You don’t need years of investigative experience, but you do need strong instincts for asking the right questions, following information across systems, and connecting dots. This position works under the direction of the Trust & Safety Manager, who will provide ongoing mentorship, hands-on training, and a structured onboarding plan to help you build the skills needed to investigate fraud and suspicious activity on our marketplace. If you’re the type of person who notices when something doesn’t add up and can’t resist figuring out why, you’ll likely thrive here. Here's more of what you will get to do Investigate reports of suspected fraud or criminal activity within the OfferUp marketplace Ask questions, review data, and follow investigative leads to understand what occurred Use internal tools and available information to identify patterns and uncover suspicious behavior Accurately document cases in our case management system, ensuring information is clear and complete Support responses to law enforcement requests under team guidance Handle sensitive and confidential information with care and professionalism Monitor trends in fraud, scams, and marketplace abuse Assist with escalated incidents and help the team respond quickly to emerging risks Collaborate with internal teams to better understand issues and prevent future incidents Prepare clear and concise summaries of investigative findings

Requirements

• A naturally curious mindset — you ask questions and want to understand how things work
• Strong problem-solving instincts and willingness to dig deeper when something doesn’t make sense
• Resourcefulness in finding information and connecting dots across multiple sources
• High attention to detail and strong organizational skills
• Ability to analyze information and make thoughtful decisions with guidance
• Clear written and verbal communication skills
• Comfort learning new tools, systems, and processes
• Ability to manage confidential information responsibly
• Ability to adapt quickly in a collaborative and evolving environment
• Available to work occasional evenings, weekends, or holidays as part of “on-call” coverage

Nice To Haves

• Coursework or interest in criminal justice, cybersecurity, fraud prevention, or Trust & Safety
• Experience in customer service, retail operations, analytics, or similar investigative/problem-solving roles
• Bilingual skills
• Interest in online safety, digital marketplaces, or investigations

Responsibilities

• Investigate reports of suspected fraud or criminal activity within the OfferUp marketplace
• Ask questions, review data, and follow investigative leads to understand what occurred
• Use internal tools and available information to identify patterns and uncover suspicious behavior
• Accurately document cases in our case management system, ensuring information is clear and complete
• Support responses to law enforcement requests under team guidance
• Handle sensitive and confidential information with care and professionalism
• Monitor trends in fraud, scams, and marketplace abuse
• Assist with escalated incidents and help the team respond quickly to emerging risks
• Collaborate with internal teams to better understand issues and prevent future incidents
• Prepare clear and concise summaries of investigative findings

Benefits

• OfferUp offers a comprehensive compensation and benefits package where you’ll be rewarded based on your performance and recognized for the value you bring to the business.
• Individual salaries within our ranges are determined through a variety of factors, including but not limited to education, experience, knowledge, skills, and geography.
• All roles will receive equity in OfferUp as part of their compensation, the amount of equity varying depending on the individual’s level and experience.
• In addition to our compensation package, this role is eligible to enroll in health insurance, healthcare savings and spending accounts, retirement savings benefits (401(k) plan with match), basic and voluntary life insurance, disability benefits, and paid time off for sick leave, family and/or medical leave, vacation, and 12 company holidays.
• In regard to vacation time, OfferUp has a flexible vacation policy, and, in general, full-time, exempt employees will be expected to take 3-5 weeks (15-30 days) of pre-planned vacation time per year. Vacation needs are flexible and will naturally vary from year to year based on individual circumstances and business needs.
• In regard to sick time, all full-time employees (exempt and non-exempt) will be granted 12 days (96 hours) of sick time per year (pro-rated if the start date is other than January 1).

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level
• Education Level: No Education Listed