Staff Software Engineer, Payments and Fraud

Courtyard Inc.

6d•Remote

About The Position

Courtyard is hiring a Staff Software Engineer to join its Payments team. The role works across the stack on how money moves through Courtyard on web and mobile, including payment features and the risk and fraud systems that determine which payments go through. The engineer will help Courtyard expand into new markets and payment methods. The role involves building payment features from back-end services and APIs through customer-facing checkout screens, contributing to payment-method selection, 3D Secure routing, error and decline handling, and checkout conversion. It also covers real-time fraud scoring, risk rules, device signals, identity checks, disputes and chargebacks, payment-flow reliability, and technical leadership through design discussions, code reviews, and mentoring.

Requirements

At least 8 years of professional software engineering experience.
Strong full-stack engineering skills, with production experience in TypeScript and React; Next.js and mobile experience are preferred.
Back-end experience designing APIs and services, working with relational databases, and operating systems in the cloud.
Experience integrating payment processors and working with payment lifecycles, webhooks, refunds, and disputes.
Experience building payment UIs with hosted fields and tokenization to keep card data out of application code in PCI-compliant flows.
Experience with fraud prevention, such as risk rules, scoring, 3D Secure, device signals, or identity checks.
Comfort using SQL to measure fraud and conversion and monitor rollouts.

Nice To Haves

Experience with alternative or digital payment methods.
Experience with A/B testing and experimentation.
Experience with marketplaces.
Next.js and mobile experience.

Responsibilities

Design, build, and ship end-to-end payment features across back-end services and web and mobile checkout interfaces.
Contribute to payment screens, including payment-method selection, 3D Secure challenge routing, error and decline handling, and conversion improvements.
Build and improve fraud and risk systems, including real-time scoring, risk rules, device signals, and identity checks.
Help prevent and respond to disputes and chargebacks, automate evidence, and feed outcomes back into fraud decisions.
Improve payment reliability through safe retries that prevent double charges, webhook processing, monitoring, and feature-flagged rollouts.
Lead design discussions, raise code review standards, and mentor other engineers.