> Markdown version of [/jobs/ext/172491-principal-software-engineer](https://www.wearedevelopers.com/jobs/ext/172491-principal-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Software Engineer - **Company:** ZoomInfo Technologies LLC - **Location:** Bethesda, MD, United States - **Experience:** Expert - **Salary:** $163,800.0 - $257,400.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Big Data, BigTable, BigQuery, Software as a Service, Programming Tools, Node.Js, OAuth, Performance Tuning, Role-Based Access Control, JSON Web Token, Software Engineering, Apache Solr, TypeScript, Management of Software Versions, Web Services, Datadog, GitHub Copilot, System Availability, Software Security, Backend, Information Technology, Low Latency, Graphql, Api Management, Jenkins - **Published:** May 22, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=fed0f27ac074bef4 ## About the Role Do you have experience in TypeScript?, * 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. ## 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. 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. 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. ## Related Videos - [Contract-First Frontend: Scaling Reliable UIs with OpenAPI and AI](https://www.wearedevelopers.com/videos/1995-contract-first-frontend-scaling-reliable-uis-with-openapi-and-ai) - [Putting the Graph In GraphQL With The Neo4j GraphQL Library](https://www.wearedevelopers.com/videos/257-putting-the-graph-in-graphql-with-the-neo4j-graphql-library) - [The Road to MLOps: How Verivox Transitioned to AWS](https://www.wearedevelopers.com/videos/1050-the-road-to-mlops-how-verivox-transitioned-to-aws) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) - [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape) ## Related Articles - [Dev Digest 159: AI Pipelines, 10x Faster TypeScript, How to Interview](https://www.wearedevelopers.com/magazine/563-dev-digest-159-ai-pipelines-10x-faster-typescript-how-to-interview) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift) - [Dev Digest 132 - Binging WADFlix?](https://www.wearedevelopers.com/magazine/473-dev-digest-132-binging-wadflix)