Senior Software Engineer - PSA Liquidity

Collectors is the leading creator of innovative technology that provides value-added services for collectors worldwide. We grade, authenticate, vault, and sell millions of record-setting collectibles, all while modernizing and digitalizing the process to further our mission of helping collectors pursue their passions. We’re always on the lookout for talented people to join our growing team.

Our services span collectible trading cards, autographs, comic books, coins, video games, event tickets, and memorabilia. Our subsidiaries include PSA, PCGS, Beckett, SGC, and Card Ladder.

Since our founding in 1986, we have graded and authenticated millions of items. We employ more than 3000 people across our headquarters in Santa Ana, California and offices in New Jersey, Texas, Florida, Japan, Shanghai, Hong Kong, Canada, Mexico, Germany, the UK, and France.

As part of our interview process, we request that candidates have their cameras on during video interviews. This helps foster meaningful conversation and allows us to create an experience that closely resembles our standard working environment. Certain interview steps may take place by phone. For remote roles, and at our discretion, candidates may be asked to participate in an on-site interview as part of the final stages of the process.

We understand there may be occasional circumstances requiring accommodation and are happy to discuss them as needed. Your recruiter will be able to clarify expectations and answer any questions you have.

Collectors is the leading creator of innovative technology that provides value-added services for collectors worldwide. We grade, authenticate, vault, and sell millions of record-setting collectibles, all while modernizing and digitalizing the process to further our mission of helping collectors pursue their passions.

Our services span collectible trading cards, autographs, comic books, coins, video games, event tickets, and memorabilia. Our subsidiaries include PSA, PCGS, Beckett, SGC, and Card Ladder. Since our founding in 1986, we have graded and authenticated millions of items, and today we employ more than 3,000 people across our headquarters in Santa Ana, California and offices in New Jersey, Texas, Florida, Japan, Shanghai, Hong Kong, Canada, Mexico, Germany, and France.

We’re transforming the collecting experience with technology that brings authentication, grading, and trading into the modern era. Our products are equalizing the playing field by providing tools that make complex research analytics — including pricing, scarcity reports, and historic sales data — accessible to every collector, old or new. Our Product & Engineering mission is to democratize technology while promoting innovation, collaboration, and continuous learning throughout the organization.

We are looking for a Senior Software Engineer to build the PSA Liquidity Platform — the product suite that connects supply and demand across our marketplace, including PSA Partner Offers and our eBay Consignment platform.

PSA Partner Offers is a first-party marketplace that sources offers from our network of buyers and surfaces them as instant, targeted offers to grading and vault customers. Our eBay consignment business allows customers to seamlessly sell on the world’s largest marketplace while we handle every step of fulfillment as eBay’s official vault partner.

You’ll own the technical design and delivery of the end-to-end buyer and seller experiences, partnering with a dedicated cross-functional team (business, product, engineering, design, data) to seamlessly connect supply and demand. This is a high-visibility, high-impact role on our Marketplace engineering team,…