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Knot

B2B fintech API for card updates

Senior / Staff Product Engineer

Full-Stack EngineeringConfirmed live in the last 24 hours
Full-timeNew York, NY, USA$160k - $240k /yr

About the Job

Requirements

  • At least 5 years of full-stack engineering experience.
  • Proficiency in React, Node, TypeScript, Go, Python, and CloudSQL or a similar relational database.
  • A track record of shipping high-quality products at scale.
  • Ability to produce high-quality visual design in user interfaces.
  • Understanding of observability and ability to investigate performance and user-experience issues.
  • Ability to take initiative and lead solutions to challenging problems in a rapidly growing organization.
  • Ability to communicate and collaborate with product teams.

Responsibilities

  • Work with a team to build, experiment with, and debug user-facing features across Knot's products.
  • Build new products and existing features to deliver more value to end users.
  • Develop user interfaces using React and TypeScript on the frontend and a variety of technologies at the API layer.
  • Foster a culture focused on delivering an industry-leading user experience.

Desired Qualifications

  • Experience with fintech or consumer apps.

About the Company

Knot

B2B fintech API for card updates

Knot provides a B2B merchant connectivity API that helps banks, fintechs, and other financial institutions keep customers’ card-on-file details up to date across a broad network of merchants. Its main product, CardSwitcher, automatically updates card information in end-user apps across many merchants with only a few lines of code, and its suite also includes MassSwitcher, TransactionLink, and subscription-management tools; SDKs support web, iOS, Android, React Native, and Flutter. Knot differentiates itself with a developer-first API, wide merchant coverage (including Walmart, Netflix, and Amazon), and revenue-sharing partnerships with major players like Amex Ventures and Plaid. Its goal is to reduce customer churn, grow card adoption, and increase merchant spending for its clients by keeping the user’s preferred payment method current.

Company size
51-200
Company stage
Series A
Total funding
$13M
Headquarters
New York City, New York
Founded
2022

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