Senior Software Engineer, Cloudflare for SaaS

Cloudflare • San Francisco, CA

2d • Onsite

About The Position

Cloudflare for SaaS enables SaaS providers to offer their services on customer-branded domains instead of their own. This product manages customer domains, automating tasks like onboarding, ownership validation, certificate issuance and renewal, and secure configuration deployment across Cloudflare's global network. The team develops APIs and control-plane systems used by major platforms, aiming to support tens of millions of customer domains with enhanced reliability, faster APIs, simplified large-scale configuration, and broader product integration. This role involves customer-facing product development alongside complex challenges in distributed systems, data modeling, state consistency, observability, and operational reliability. The Software Engineer will design, build, and operate the services for Cloudflare for SaaS, focusing on backend services and RESTful APIs in Go, modernizing legacy control-plane workflows, and improving production system reliability and scalability. Collaboration with product managers and engineers, technical specification writing, code reviews, service instrumentation, and operational issue diagnosis and resolution are key aspects of this role.

Requirements

• 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.

Nice To Haves

• Experience designing and evolving RESTful APIs used by external customers.
• Working knowledge of SQL and relational databases such as PostgreSQL, including schema and query design.
• Understanding of distributed-systems concerns such as consistency, caching, concurrency, and failure recovery.
• Experience modernizing legacy systems or migrating workflows to a service-oriented architecture.
• Experience with observability tools and practices, including metrics, logs, tracing, alerting, and SLOs.
• Familiarity with PKI/TLS, certificate lifecycle management, ACME, DNS, or domain validation.
• Experience with message queues, Kubernetes, or globally distributed configuration systems.
• Interest in building intuitive product experiences for customers managing large fleets of domains.

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.

Benefits

• Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.
• Project Galileo: Since 2014, we've equipped more than 2,400 journalism and civil society organizations in 111 countries with powerful tools to defend themselves against attacks that would otherwise censor their work, technology already used by Cloudflare’s enterprise customers--at no cost.
• Athenian Project: In 2017, we created the Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free, so that their constituents have access to election information and voter registration. Since the project, we've provided services to more than 425 local government election websites in 33 states.
• 1.1.1.1: We released 1.1.1.1 to help fix the foundation of the Internet by building a faster, more secure and privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Here’s the deal - we don’t store client IP addresses never, ever. We will continue to abide by our privacy commitment and ensure that no user data is sold to advertisers or used to target consumers.
• Equal employment opportunity for all people and place great value in both diversity and inclusiveness.
• Reasonable accommodations to qualified individuals with disabilities.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed