Note: The job is a remote job and is open to candidates in USA. ZoomInfo is where careers accelerate, and they are seeking an experienced Principal Software Engineer to lead the design and development of their customer-facing GraphQL API platform. This role involves setting architectural direction and ensuring high-quality, scalable API solutions for enterprise customers.
Responsibilities
- Architect, design, and own the end-to-end development of ZoomInfo's customer-facing GraphQL APIs, ensuring high availability, low latency, and developer-friendly experiences
- Define schema design standards, versioning, deprecation, and backward-compatible evolution across product surfaces
- Work with product managers and data engineers to expose ZoomInfo's GTM data assets (BigTable, BigQuery, Solr) through well-structured, queryable API surfaces
- Implement and enforce API security, OAuth 2.0, JWT, RBAC, rate limiting, and query complexity controls
- Maintain production reliability through CI/CD pipelines (Jenkins, ArgoCD) and observability practices using Datadog
- Use AI tooling (Claude, GitHub Copilot) as part of your daily workflow and help the team do the same responsibly
- Lead code and design reviews, mentor senior engineers, and contribute to the engineering roadmap
Skills
- Deep GraphQL expertise: schema design, resolvers, federation, subscriptions, and performance optimization
- Strong Node.js and TypeScript skills for API services and developer tooling
- Go experience for backend and infrastructure work
- Experience securing customer-facing APIs, OAuth 2.0, JWT, fine-grained authorization, rate limiting
- Familiarity with large-scale data systems
- Clear communicator who can drive technical decisions and bring along both engineering and non-engineering stakeholders
- 8+ years of software engineering experience, with a focus on production-grade, customer-facing APIs at scale
- Prior experience owning a developer-facing API platform at a SaaS or data company
- Bachelor's or advanced degree in Computer Science, Engineering, or a related field
- Experience with GraphQL Yoga or Apollo Server (transferable skills)
- Exposure to BigTable, BigQuery, or Solr is a plus
- Experience building developer-facing SDKs or API tooling
- Familiarity with AI coding tools (Claude, GitHub Copilot)
- Experience with AI Agents or MCP tooling is a bonus
Benefits
- In addition to comprehensive benefits we offer holistic mind, body and lifestyle programs designed for overall well-being.
- Additional compensation such as Bonus, Commission, Equity and other benefits may also apply.
Company Overview
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