# Principal Software Engineer

**Company**: ZoomInfo
**Location**: Bethesda, Maryland, United States; Waltham, Massachusetts, United States
**Work arrangement**: hybrid
**Experience**: senior
**Job type**: full-time
**Salary**: $163,800-$257,400 USD
**Category**: Engineering
**Industry**: Technology

**Apply**: https://job-boards.greenhouse.io/zoominfo/jobs/8539352002?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_fef530be-a4b

## Description

We are seeking an experienced Principal Software Engineer to lead the design and development of ZoomInfo's customer-facing GraphQL API platform, built on top of our industry-leading Go-to-Market (GTM) data assets.

As a Principal Software Engineer, you will be a technical anchor for a collaborative engineering team, setting architectural direction for how enterprise customers and partners programmatically access the world's most comprehensive B2B intelligence.

This is a high-impact individual contributor leadership role where your decisions directly shape platform quality, scalability, and customer success.

Key responsibilities include:

Architecting, designing, and owning the end-to-end development of ZoomInfo's customer-facing GraphQL APIs, ensuring high availability, low latency, and developer-friendly experiences.

Defining schema design standards, versioning, deprecation, and backward-compatible evolution across product surfaces.

Working with product managers and data engineers to expose ZoomInfo's GTM data assets (BigTable, BigQuery, Solr) through well-structured, queryable API surfaces.

Implementing and enforcing API security, OAuth 2.0, JWT, RBAC, rate limiting, and query complexity controls.

Maintaining production reliability through CI/CD pipelines (Jenkins, ArgoCD) and observability practices using Datadog.

Using AI tooling (Claude, GitHub Copilot) as part of your daily workflow and helping the team do the same responsibly.

Leading code and design reviews, mentoring senior engineers, and contributing to the engineering roadmap.

The ideal candidate will have deep GraphQL expertise, strong Node.js and TypeScript skills, experience securing customer-facing APIs, and familiarity with large-scale data systems.

## Skills

### Required
- GraphQL
- Node.js
- TypeScript
- API Security
- OAuth 2.0
- JWT
- RBAC
- Rate Limiting
- Query Complexity Controls
- CI/CD Pipelines
- Observability Practices
- AI Tooling

### Nice to have
- Go
- BigTable
- BigQuery
- Solr
- GraphQL Yoga
- Apollo Server

---

Source: [Apply at job-boards.greenhouse.io](https://job-boards.greenhouse.io/zoominfo/jobs/8539352002?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)