Senior Backend Engineer - Payments & Billing Platform

Triple llc; Pittsburgh (Allegheny County); On-site; USD 120,000 - 150,000; Full time

Job summary

Numo is seeking a Software Engineer to join our Financial Platform team, responsible for invoicing, payment, and settlement infrastructure serving our partner network — the merchants who fund offers and the banks who distribute them to cardholders.

Design and build backend services in Python with FastAPI, optimize SQL on Snowflake, and collaborate to deliver features end-to-end. Role requires 6+ years of hands-on experience and familiarity with AWS and IaC tooling.

Qualifications

• Demonstrated professional experience with Python, including API development.
• Strong SQL skills, including experience with modern cloud data warehouses (Snowflake preferred).
• Working knowledge of AWS services and infrastructure-as-code tools (Terraform).
• Demonstrated ability to own features from design through deployment.
• Minimum of 6 years of experience.

Responsibilities

• Design, develop, and maintain backend services using Python and FastAPI.
• Develop and optimize SQL against a Snowflake data warehouse, including schema design and complex query authoring.
• Participate in infrastructure changes (Terraform/Terragrunt) required to support new features.
• Collaborate with frontend and platform stakeholders to deliver features end-to-end.
• Contribute to the design and implementation of billing and settlement logic.

Skills

Python

SQL

API design

Data warehousing

AWS

Tools

Snowflake

Terraform/Terragrunt

Job description

Numo is seeking a Software Engineer to join our Financial Platform team, responsible for invoicing, payment, and settlement infrastructure serving our partner network — the merchants who fund offers and the banks who distribute them to cardholders.

Design and build backend services in Python with FastAPI, optimize SQL on Snowflake, and collaborate to deliver features end-to-end. Role requires 6+ years of hands-on experience and familiarity with AWS and IaC tooling.