Demo

Senior QA Engineer

Knot
York, NY Full Time
POSTED ON 12/18/2025
AVAILABLE BEFORE 1/16/2026
About Knot

Knot’s mission is to empower consumers and businesses alike with connected merchant and banking experiences. Knot is like “Plaid for merchant connectivity.” We are building the platform connecting merchants to the many applications that consumers and businesses interact with everyday. Our flagship CardSwitcher product allows consumers to instantly update & manage their cards on file with online merchant accounts (e.g. Netflix or PayPal), while newer products like TransactionLink support the retrieval of item-level transaction data. We are building many new products on top of our novel merchant connectivity platform and we hope you choose to come build them with us!

Founded in 2021, Knot was founded by two brothers and Thiel Fellows - Rory and Kieran O’Reilly - and today powers connected online payment experiences for hundreds of thousands of consumers. Companies like American Express, PayPal, Current, BILT, Step, and more choose to embed Knot’s SDK in their apps to power best-in-class experiences for their customers.

Knot is proudly backed by a select group of investors, including Nava Ventures, 8VC, American Express, Plaid, and co-founders & CEOs of prominent companies like Twitter, Warby Parker, Allbirds, Casper, Intercom, Deel, Italic, DraftKings, and many more.

Working at Knot

We’re a world-class team hailing from all over the globe with the vast majority of the company in engineering roles. We are looking to further solidify our presence in NYC to be at the heart of the financial services ecosystem.

Our team is relentlessly focused on building for our customers and every member of the financial services ecosystem. We take our work seriously and have fun while doing it. Both are equally important.

What You’ll Do

  • Use a creative, yet robust approach to design and implement testing strategies for frontend and backend systems (iOS/android/web/backend), including those often difficult to test.
  • Work collaboratively with various engineers and product management to define what “quality” means and chart a path to a higher degree of software quality and reliability.
  • Proactively identify existing and future high risk areas of the software that are prone to breakage and integrate this context into your testing prioritization.
  • Evaluate and integrate new testing tools and methodologies.
  • Build and maintain automated test suites and perform manual testing where applicable.

What You’ll Need To Get The Job Done

  • 5 years of QA engineering experience.
  • Strong expertise in automated testing frameworks (we use Jest, Cypress, Pest).
  • Experience testing fullstack applications (we use React/TS, and native SDKs).
  • Knack for writing scripts that significantly improve and aid the testing and quality assurance process.
  • History of leveling up individual and teams of engineers.
  • You excel in a rapidly growing organization and embrace challenging problems, tackling them directly and taking the initiative to lead the solution.
  • Eagerness to work in a fast-paced, dynamic environment and constantly grow & develop your craft.
  • Expert communication and ability to collaborate seamlessly with product teams.

Tech

  • React frontend with Styled Components
  • React-query/Axios for API calls
  • Typescript/Node, Python, Go, and Socket.io in the backend
  • CloudSQL & Redis
  • Hosted on Google Cloud Functions and Kubernetes
  • Github, Linear, Slack, Notion

What We Offer

  • Interesting and challenging work
  • Competitive base salary generous early employee equity benefits
  • 100% medical, dental, and vision insurance coverage for you and your dependents (U.S.)
  • Unlimited PTO
  • Parental leave
  • Beautiful NYC office in the heart of Flatiron

Salary.com Estimation for Senior QA Engineer in York, NY
$98,649 to $115,781
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