Senior Software Engineer, Internal Developer Platform at ZoomInfo – Toronto | Jobyssey

ZoomInfo is where careers accelerate. We move fast, think boldly, and empower you to do the best work of your life. You’ll be surrounded by teammates who care deeply, challenge each other, and celebrate wins. With tools that amplify your impact and a culture that backs your ambition, you won’t just contribute. You’ll make things happen–fast.

What You'll do

Design & Develop: Build and own services across our 20+ microservice Backstage platform using TypeScript and Node.js, exposing REST and GraphQL APIs consumed by other services and the Backstage frontend.
Catalog & Entity Pipeline: Own the Backstage catalog and ingestion pipeline that syncs entities from Helm, ArgoCD, GCP, and GitHub — nightly and on-demand.
Developer-Facing Features: Extend the platform with engineering maturity scoring, change management workflows, AI-generated reports, and test management tooling.
AI Integration: Develop LLM-powered services and MCP servers that make catalog and engineering data accessible to humans and AI agents.
Operational Excellence: Own service reliability on GKE via ArgoCD GitOps, PostgreSQL and Redis datastores, and Datadog monitoring — including incident response and runbook ownership. Collaborate: Partner with engineering, governance, architecture, and infrastructure teams to translate needs into catalog models, golden paths, and self-service tooling.

What you bring:

Advanced proficiency in TypeScript and Node.js with strong software architecture fundamentals
Hands-on experience designing and shipping REST and GraphQL APIs in production
Hands-on experience building or extending Backstage — plugin development, catalog model, software templates, and TechDocs
Strong proficiency with PostgreSQL and Redis; MongoDB familiarity is a plus
Experience with Kubernetes (GKE) and GCP — deployment, scaling, and production troubleshootingHands-on experience with ArgoCD, Helm, and GitHub Actions
Working proficiency with Terraform for cloud infrastructure management
Practical experience integrating LLMs into production services; familiarity with MCP or Agentic AI patterns

Education & Experience:

Bachelor's degree in Computer Science or related field
5+ years in Software Engineering with experience building Internal Developer Platforms or Platform/Infrastructure tooling

About us:

ZoomInfo (NASDAQ: GTM) is the Go-To-Market Intelligence Platform that empowers businesses to grow faster with AI-ready insights, trusted data, and advanced automation. Its solutions provide more than 35,000 companies worldwide with a complete view of their customers, making every seller their best seller.

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ZoomInfo may use a software-based assessment as part of the recruitment process. More information about this tool, including the results of the most recent bias audit, is available here.

ZoomInfo is proud to be an equal opportunity employer, hiring based on qualifications, merit, and business needs, and does not discriminate based on protected status. We welcome all applicants and are committed to providing equal employment opportunities regardless of sex, race, age, color, national origin, sexual orientation, gender identity, marital status, disability status, religion, protected military or veteran status, medical condition, or any other characteristic protected by applicable law. We also consider qualified candidates with criminal histories in accordance with legal requirements.

For Massachusetts Applicants: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability. ZoomInfo does not administer lie detector tests to applicants in any location.

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