Principal Software Engineer
Principal Software Engineer leading design and development of ZoomInfo's customer-facing GraphQL API platform on top of GTM data assets. Technical anchor setting architectural direction for scalable, secure APIs used by enterprise customers and partners.
What You'll Do
- 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.
What You Bring
- Deep GraphQL expertise: schema design, resolvers, federation, subscriptions, and performance optimization. Experience with GraphQL Yoga or Apollo Server (transferable skills).
- 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; exposure to BigTable, BigQuery, or Solr is a plus.
- Experience building developer-facing SDKs or API tooling. You think about the API consumer, not just the implementation.
- Familiarity with AI coding tools (Claude, GitHub Copilot); experience with AI Agents or MCP tooling is a bonus.
- Clear communicator who can drive technical decisions and bring along both engineering and non-engineering stakeholders.
Ideal Background
- 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.
Senior Software Engineer, Strategic Integrations
Senior engineer leading platform quality, legacy migration, and observability for enterprise partner integrations. Requires strong backend experience, third-party API integration at scale, and incremental migration expertise.
Software Engineer III (Ruby on Rails)
Own end-to-end feature development on Rails-based backend services powering feeds and profiles. Deliver complex work, guide junior engineers, and contribute to architectural decisions in a fully remote environment.
Member of Technical Staff, Core Backend
Owns the StreamModule voice pipeline (VAD→STT→LLM→TTS) for real-time call agents. Consolidates BullMQ to Kafka, hardens provider abstractions, adds OTEL tracing, and eliminates Postgres SPOFs.
Staff Software Engineer, Backend
Staff Backend Engineer building scalable Go services and APIs for Okta's Privileged Access Management platform. Focus on distributed systems, database design, and production reliability for enterprise security infrastructure.