Senior Backend Engineer for SaaS APIs (Go)

Cloudflare; United States; Hybrid; USD 140,000 - 190,000; Full time

Job summary

United States Digital Space LLC is seeking a Senior Software Engineer to design, build, and operate backend services and RESTful APIs for managing customer domains and their configuration. The role focuses on reliability, scalability, and deployment of control planes across millions of domains.

You will collaborate with product managers and engineers, modernize legacy workflows, and improve production systems with observability and strong engineering practices.

Qualifications

• 3+ years of professional experience building backend systems at a technology company.
• Experience writing production-quality code in Go or another language, with a willingness to learn Go.
• Experience designing, building, and operating distributed systems or high-scale services.
• Strong debugging and troubleshooting skills across applications, data stores, and production environments.
• Proficiency with modern Unix/Linux development and runtime environments.
• A track record of delivering well-tested, reliable code and taking ownership of it in production.
• Clear written and verbal communication, including the ability to explain technical decisions and tradeoffs.

Responsibilities

• Design, build, and operate reliable backend services and APIs for managing customer domains and their configuration.
• Evolve the control plane to support tens of millions of customer domains without sacrificing correctness, availability, or API performance.
• Improve certificate and domain lifecycle workflows, including onboarding, validation, renewal, migration, and safe deletion.
• Model ownership and shared state carefully so changes remain consistent across distributed services and configuration stores.
• Build useful observability, alerts, and operational procedures, and participate in debugging and incident response.
• Collaborate across engineering and product teams, document designs and tradeoffs, and review the work of fellow engineers.

Skills

Go

Backend systems

Distributed systems

Unix/Linux

Debugging

Production code

Communication

Job description

United States Digital Space LLC is seeking a Senior Software Engineer to design, build, and operate backend services and RESTful APIs for managing customer domains and their configuration. The role focuses on reliability, scalability, and deployment of control planes across millions of domains.

You will collaborate with product managers and engineers, modernize legacy workflows, and improve production systems with observability and strong engineering practices.