Remote Senior Payments Engineer - Scalable Money Movement

Sezzle; Lytton (CA); On-site; USD 56,000 - 106,000; Full time

Job summary

Sezzle seeks a Senior Payments Engineer to own and scale the core payment-processing stack, integrating with processors like Stripe and Adyen, and ensuring secure, auditable money movement.

You will work on authorization, settlement, reconciliation, and disputes with a focus on reliability, PCI scope, and AI-assisted productivity. Collaborate across Product, Risk, Compliance and Support in a backend‑heavy role.

Qualifications

• 7+ years backend or full‑stack engineering in payments/fintech
• Strong Go or Python REST API experience
• Hands‑on with payment processors, gateways, and tokenization basics

Responsibilities

• Design and build Golang backend services integrating with payment processors and gateways
• Own money movement flows: authorization, settlement, reconciliation, refunds, dispute handling
• Ensure idempotent, auditable processing in distributed systems; monitor health and performance

Skills

Backend engineering

Go

Payments fintech

Distributed systems

Claude/LLM usage

Education

Bachelor's in CS/Engineering

Tools

Kubernetes

Kafka

SQS

RabbitMQ

Job description

Sezzle seeks a Senior Payments Engineer to own and scale the core payment-processing stack, integrating with processors like Stripe and Adyen, and ensuring secure, auditable money movement.

You will work on authorization, settlement, reconciliation, and disputes with a focus on reliability, PCI scope, and AI-assisted productivity. Collaborate across Product, Risk, Compliance and Support in a backend‑heavy role.