Principal Software Engineer, Billing Core — Scale & Growth

United States Digital Space LLC; United States; On-site; USD 180,000 - 240,000; Full time

Job summary

United States Digital Space LLC is seeking a Principal Software Engineer to drive the Billing Core domain. This hands-on role focuses on scalable billing systems, data pipelines, and strong collaboration with Product, SRE, and Cloud Infrastructure teams.

You will own complex billing systems across multiple services and clouds, shape architecture, improve observability, and mentor engineers to raise technical standards.

Responsibilities

• Own complex billing and account management systems that span multiple services and cloud providers.
• Build large-scale data pipelines for billing data ingestion, transformation, and reconciliation.
• Improve observability, incident response, and reliability of core billing systems using modern DevOps practices.
• Shape system architecture for scale and modularity. Guide service design, API structure, and data modelling.
• Work with SRE and Cloud teams to improve deployment, monitoring, and CI/CD pipelines.
• Own PostgreSQL data architecture and performance. Focus on query speed, schema quality, and high availability.
• Be the go-to technical reviewer for the billing core stack. Maintain technical consistency and quality standards.
• Mentor engineers and tech leads across the Billing

Job description

United States Digital Space LLC is seeking a Principal Software Engineer to drive the Billing Core domain. This hands-on role focuses on scalable billing systems, data pipelines, and strong collaboration with Product, SRE, and Cloud Infrastructure teams.

You will own complex billing systems across multiple services and clouds, shape architecture, improve observability, and mentor engineers to raise technical standards.