Full-Time
Senior Infrastructure Engineer
Knot
11-50 employees
B2B fintech API for card updates
Compensation Overview
$160k - $240k/yr
New York, NY, USA
In Person
 DevOps & Infrastructure (1) |
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- 6+ years of network engineering experience at a software company, preferably a startup
- Experience with Google Cloud Platform and Kubernetes
- Track record of automating infrastructure and deployments (for example Terraform)
- Proficiency with Go or TypeScript as programming languages
- Proficiency with gRPC and Protocol Buffers for communication
- Experience with low-level networking concepts such as IP convergence networks, Google Cloud Platform Virtual Private Cloud, load balancers, and Identity and Access Management role management and implementation
- Ability to understand and promote high quality code and software engineering processes
- Willingness to work in a fast-paced, dynamic environment and to continuously grow and develop skills
- Excellent communication and collaboration across engineering teams
- Architect, design, deploy, document and manage cloud-based network infrastructure
- Own and maintain critical API infrastructure serving hundreds of requests per second
- Lead and defend technical decisions providing design justification, coordination, and identifying value and requirements for other teams in the organization
- Learn and continue to foster an understanding of the long-term needs of the infrastructure
- Manage and assist in the resolution of complicated technical problems and incidents and provide appropriate communication and escalation
- Support and maintain current infrastructure to maintain a high level of service and availability to the rest of the organization
- 6+ years of network engineering experience at a software company, preferably a startup
- Experience with Google Cloud Platform and Kubernetes
- Track record of automating infrastructure and deployments (e.g. Terraform)
- Proficiency within a modern tech stack, Go or TypeScript for languages and gRPC & Protobuf for communication, as well as with low-level primitives such as IP converged networks, GCP VPC, load balancers, and IAM role management and implementation
- Know what high quality code & software engineering processes look like and know how to foster an environment that creates them
- Eagerness to work in a fast-paced, dynamic environment and constantly grow & develop your craft
- Expert communication and ability to collaborate seamlessly across engineering teams
Knot provides a merchant connectivity platform that allows users to automatically update their saved payment card information across various online services. Financial institutions embed Knot’s software into their own apps, enabling customers to swap their old card details for new ones at merchants like Netflix and Amazon without manual entry. Unlike traditional manual updates, Knot uses a developer-first API and a wide merchant network to automate the process and provide item-level transaction data. The company's goal is to help banks increase card usage and reduce customer churn by ensuring their card remains the primary payment method for users.
Company Size
11-50
Company Stage
Series A
Total Funding
$13M
Headquarters
New York City, New York
Founded
2022
Simplify's Take
What believers are saying
- PayPal partnership streamlines checkouts using CardSwitcher since April 2025.
- Plaid refers Knot as preferred card-switching provider since June 2024.
- Amex integration boosts card adoption through Knot's technology.
What critics are saying
- Plaid's Asset API erodes Knot's merchant network value now.
- Amex terminates Knot partnership, builds internal tools in 2026.
- No funding since 2023 Series A exhausts $13M runway immediately.
What makes Knot unique
- CardSwitcher™ updates cards across Walmart, Netflix, Amazon instantly.
- AccountUpdater™ automates card details via single API call.
- MassSwitcher™ enables multi-merchant updates with one login.
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Benefits
Health Insurance
Dental Insurance
Vision Insurance
Unlimited Paid Time Off
Parental Leave
Company Equity
Growth & Insights and Company News
6 month growth
↑ 4%1 year growth
↑ 4%2 year growth
↑ 18%Merchant connectivity platform Knot has launched a checkout-focused partnership with PayPal.
Merchant connectivity platform Knot has launched a checkout-focused partnership with PayPal. The collaboration, announced Monday (April 7), lets PayPal users update their PayPal branded card-on-file information across multiple merchants using Knot’s CardSwitcher technology. “For PayPal users, the process is simple. From the PayPal app, users can log in to their favorite merchants across categories to automatically add their PayPal branded cards to their selected merchants using Knot’s CardSwitcher,” the company said in a news release
New York, New York, November 20th, 2024, FinanceWireKnot, a leading fintech innovator in card-on-file management, introduces Knot AccountUpdater™, an advanced solution designed to upgrade and synchronize card information across hundreds of online merchants instantly and effortlessly.Over the past few years, Knot has been quietly building a suite of merchant connectivity products, and Knot AccountUpdater marks the beginning of rolling out these innovative tools to customers.Knot AccountUpdater enables card issuers using Knot’s CardSwitcher™ product to update cardholder details—including card information, name, address, and phone number—across Knot-connected merchants with a single API call, requiring no effort from the cardholder. Whether it's transitioning users from a debit to a credit card, changing processors, or managing cross-network updates and BIN range transitions, Knot AccountUpdater puts control back in the hands of issuers.“Outdated payment details can disrupt the customer experience and create unnecessary friction for merchants and financial institutions,” said Rory O'Reilly, CEO and co-founder of Knot. “Knot AccountUpdater ensures cards are effortlessly synchronized across merchant platforms, enhancing reliability, boosting loyalty, and driving better outcomes for everyone in the payment ecosystem. Network solutions handle lost, stolen, and reissued cards effectively, and Knot AccountUpdater excels at cross-network updates and managing BIN range transitions.”This solution redefines card-on-file management by focusing on real-time updates through a flexible and scalable design. Its bin-agnostic capabilities make it an ideal solution for issuers of all types, enabling seamless integration without costly overhauls. By integrating with Knot’s merchant connectivity network, Knot AccountUpdater ensures uninterrupted subscription services, online purchases, and recurring payments while simplifying the process for both cardholders and merchants.Knot AccountUpdater is currently being rolled out to select beta customers and merchants, laying the groundwork for future Knot products that will expand on its robust merchant connectivity.Financial institutions can rely on Knot AccountUpdater to minimize payment failures, build customer loyalty, and optimize interchange revenue
New York, New York, November 12th, 2024, FinanceWireKnot, a leading fintech company specializing in card-on-file management, is proud to announce the launch of MassSwitcher™, an innovative solution that enables cardholders to update their card information across multiple merchant accounts instantly with a single login.MassSwitcher addresses the common challenge consumers face when updating payment details across various online platforms. By leveraging secure integrations with password managers and keychains, cardholders can now manage their card information effortlessly, eliminating the need for manual updates and repetitive logins.“Our mission at Knot is to simplify financial interactions for cardholders, merchants, and financial institutions alike,” said Rory O'Reilly, CEO and co-founder of Knot. “MassSwitcher exemplifies this commitment by providing a seamless, secure, and efficient method for cardholders to manage their payment information across a wide array of merchants.”MassSwitcher is now available to financial institutions, offering a streamlined approach to card-on-file management that enhances user experience and supports uninterrupted transactions across hundreds of online merchants.For more information about MassSwitcher and other Knot products, users can visit https://www.knotapi.com/mass-switcher/.About KnotKnot is a leading fintech company specializing in card-on-file management. Knot offers secure, user-friendly solutions for banks and fintechs to automatically switch saved payment methods at the request of their cardholders. With Knot, card issuers can update card-on-file information instantly and seamlessly, enhancing the customer experience and driving increased interchange revenue from day one.ContactPress TeamKnot PRKnot[email protected]
"Amex has integrated with Knot's CardSwitcher technology, which allows eligible card members to quickly and securely provide their payment information to participating merchants directly through the Amex website," Stephanie Schultz, vice president and head [...]