Whatnot, Inc. logo

Software Engineer, Payments

Job Overview

Location

New York, USA

Job Type

Full-time

Category

Software Engineer

Date Posted

March 4, 2026

Full Job Description

đź“‹ Description

  • • As a Software Engineer on the Payments - Treasury team at Whatnot, you will play a pivotal role in shaping the financial infrastructure of one of North America and Europe's fastest-growing live shopping platforms.
  • • This role is central to the core operations of Whatnot, focusing on how the business manages and records money and credit across all customer transactions, ensuring seamless global operations.
  • • You will be instrumental in handling complex financial processes including taxes, customs, returns, refunds, and international payment intricacies, directly impacting the platform's ability to scale and expand globally.
  • • Your work will be deeply integrated with the foundational elements of our business, enabling tremendous growth within and across international territories.
  • • You will contribute to creating exciting new ways for our users to interact and transact on the platform, enhancing the overall customer experience.
  • • Collaboration is key; you will work closely with our partner team, Payments - Experience, and engage with other teams and senior leaders across Whatnot to drive impactful initiatives.
  • • The team is focused on making substantial improvements to critical infrastructure, specifically targeting payment scale and reliability, diversifying payment options, enhancing fraud mitigation strategies, and refining transaction modelling and tax systems.
  • • Your contributions will be vital in providing a seamless international marketplace, removing friction for both buyers and sellers.
  • • As a member of this team, you will be entrusted with individual responsibilities and empowered to act as an expert in advancing specific aspects of the payments domain, in close collaboration with the leadership team.
  • • Success in this role hinges on your ability to make sound trade-offs, exercise excellent judgment, and communicate effectively with diverse stakeholders.
  • • You will be expected to design and implement scalable systems capable of handling millions of users, ensuring robustness and efficiency.
  • • A significant part of your role will involve architecting complex distributed systems that form the backbone of products used by a vast user base.
  • • You will have the opportunity to define the technical roadmap for the team, proactively identifying areas for improvement and leading cross-team solutions.
  • • You will be responsible for identifying, architecting, and building the right systems or products to drive business objectives forward.
  • • A deep understanding and clear articulation of the trade-offs made in technical decisions will be a core expectation.
  • • You will foster collaboration across multiple teams to successfully deliver on cross-team initiatives, while also delegating ownership and uplifting your colleagues.
  • • Mentoring junior engineers and prioritizing the development of inclusive, supportive team environments will be a key aspect of your leadership.
  • • You will embody a strong sense of project ownership, guiding initiatives from inception through production and ongoing maintenance.
  • • A track record of shipping high-quality products and features rapidly and iteratively, always with the ultimate goal in mind, is highly valued.
  • • You are an excellent problem solver, capable of identifying and addressing challenges without requiring explicit direction.
  • • While primarily focused on backend systems, you will be open to contributing to frontend work when necessary, demonstrating versatility.
  • • You will possess the ability to quickly become proficient in new technologies as required by project needs.
  • • This role offers a unique opportunity to influence the financial technology that underpins a rapidly expanding global e-commerce platform, directly contributing to its success and innovation.

Skills & Technologies

Python
JavaScript
Remote

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Whatnot, Inc. logo
Whatnot, Inc.
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About Whatnot, Inc.

Whatnot operates a live-stream marketplace for collectibles, sneakers, trading cards, apparel, and other hobby items. Sellers host real-time auctions and fixed-price shows while buyers bid or purchase through the mobile app. The platform combines live video, integrated payments, and authenticated shipping to reduce fraud. Founded in 2019, the company is headquartered in Los Angeles and has raised multiple venture rounds to expand categories and international markets.

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