CollectorsHiring

Senior Software Engineer, Back-End (Payments)

  • Remote, United States
  • Senior
  • Posted 8 days ago
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In one line

Payments engineering role on the team that handles every transaction in a collectibles marketplace, working in C/.NET and React; partly onsite near the office.

About the role

Payment flows run through checkout, vault and consignment deals, partner payouts and wallet top-ups, so the team sets the architecture and quality bar for money moving through the marketplace.

At a glance

Pay
Not stated in the posting
Remote scope
Remote, United States
Seniority
Senior
Skills
React, Svelte, TypeScript, Stripe, PayPal, ACH
Posted
21 Oct 2026
Last checked
28 Oct 2026

What you will do

  • Design and maintain integrations with several payment gateways, including Stripe and PayPal
  • Build clean abstractions so adding or swapping a gateway causes little disruption
  • Own payment flows from start through settlement, refunds and reconciliation
  • Write backend payment services and APIs in C/.NET
  • Build checkout and payment management screens in React, Svelte and TypeScript

What they look for

  • Senior backend engineering experience, with C/.NET
  • Experience integrating payment gateways and handling money flows
  • Full-stack ability with React, Svelte and TypeScript
  • Comfort working onsite most of the time if you live within an hour of the office

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Questions about this job

Is this a remote job, and where can I work from?

The posting lists it as remote for people in the United States.

What does this job pay?

The posting does not state a salary, so there is no figure to quote.

What experience is needed?

It is a senior role. The posting asks for: senior backend engineering experience, with C/.NET; experience integrating payment gateways and handling money flows; full-stack ability with React, Svelte and TypeScript. Skills it names include React, Svelte, TypeScript, Stripe.

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CollectorsRemote, United States
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