Senior Fintech Backend Engineer - Card & Fraud Platforms

Reap; United States; Remote; USD 120,000 - 180,000; Full time

Benefits offered by this job

High ownership role

Card stipend

Insurance after probation

Access to AI tools

Job summary

Reap is seeking a senior backend engineer to build and operate fintech-grade services that power card transactions, fraud controls, and partner APIs. You’ll help shape architecture, reliability, and maintainability for financial workflows in a cross-functional team.

With six+ years in software engineering, you’ll design services in TypeScript, Java, or Go, emphasize correctness and fault tolerance, and collaborate with product, risk, finance, and compliance to deliver dependable systems.

Qualifications

• Six or more years of software engineering experience in fintech or infrastructure teams.
• Experience building backend systems in typed languages (TypeScript, Java, Go).
• Strong focus on correctness, performance, and maintainability.

Responsibilities

• Design and build services for card transactions, fraud detection, and program management.
• Prioritize performance, fault tolerance, and maintainable designs.
• Collaborate with product, risk, finance, and compliance to meet regulatory needs.
• Write well-tested, observable code within a service-oriented architecture.
• Participate in code reviews, incident response, and reliability improvements.

Skills

Backend development

Distributed systems

Cross-functional collaboration

Tools

TypeScript

Java

Go

Node.js

NestJS

AWS

Job description

Reap is seeking a senior backend engineer to build and operate fintech-grade services that power card transactions, fraud controls, and partner APIs. You’ll help shape architecture, reliability, and maintainability for financial workflows in a cross-functional team.

With six+ years in software engineering, you’ll design services in TypeScript, Java, or Go, emphasize correctness and fault tolerance, and collaborate with product, risk, finance, and compliance to deliver dependable systems.