Senior Payments & Data Platform Engineer

Qu-Pos; United States; Remote; USD 150,000 - 190,000; Full time

Job summary

Qu is hiring a Senior Software Engineer to own both sides of its payments stack, building integrations that process transactions and a data platform that makes them visible for merchants. You will join a scaled agile team across geographies, working on cloud-based architectures that handle high-volume restaurant payments daily.

You will drive PSP integrations, terminal-to-cloud payment flows, and the reconciliation platform, while mentoring engineers and contributing to code quality across

Qualifications

• 7+ years in software development with meaningful payments or financial data exposure.
• 5+ years in C# / .NET building APIs and microservices.
• Hands-on PSP integration experience: gateway APIs, terminal APIs, management APIs, webhook notifications.
• EMV terminal integration: device pairing, transaction flows, certification, in-store troubleshooting.

Responsibilities

• Translate business requirements into working solutions; mentor engineers; maintain documentation and runbooks.
• Participate in code reviews and drive code quality across payment services.
• Build and maintain payment integrations with PSPs across card-present and card-not-present channels.
• Own terminal-to-cloud payment flows: device initialization, transaction processing, Store & Forward, and webhook-based reconciliation.
• Create payment analytics dashboards and reports for merchant back-office users.
• Design matching engines and data pipelines that ingest settlement files and classify exceptions.

Skills

Payments domain

API design

Microservices

Data reporting UI

Code reviews

Tools

Vue.js

Angular

React

MongoDB

SQL

Elasticsearch

AWS

Job description

Qu is hiring a Senior Software Engineer to own both sides of its payments stack, building integrations that process transactions and a data platform that makes them visible for merchants. You will join a scaled agile team across geographies, working on cloud-based architectures that handle high-volume restaurant payments daily.

You will drive PSP integrations, terminal-to-cloud payment flows, and the reconciliation platform, while mentoring engineers and contributing to code quality across