Senior Software Engineer, Internal Developer Platform

Doist; New York (NY); Hybrid; USD 140,000 - 220,000; Full time

Job summary

ZoomInfo is hiring for a Senior Software Engineer to own services across a 20+ microservice Backstage platform. You’ll build REST/GraphQL APIs with TypeScript/Node.js and extend the catalog with ingestion from Helm, ArgoCD, GCP, and GitHub.

You’ll ensure platform reliability on GKE, implement ML-enabled features, and collaborate with governance, architecture, and infra teams to deliver self-service tooling.

Qualifications

• 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 troubleshooting.
• Hands-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.

Responsibilities

• 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.
• Own the Backstage catalog and ingestion pipeline that syncs entities from Helm, ArgoCD, GCP, and GitHub — nightly and on-demand.
• Extend the platform with engineering maturity scoring, change management workflows, AI-generated reports, and test management tooling.
• Develop LLM-powered services and MCP servers that make catalog and engineering data accessible to humans and AI agents.
• Own service reliability on GKE via ArgoCD GitOps, PostgreSQL and Redis datastores, and Datadog monitoring — including incident response and runbook ownership.
• Partner with engineering, governance, architecture, and infrastructure teams to translate needs into catalog models, golden paths, and self-service tooling.

Skills

TypeScript

Node.js

REST APIs

GraphQL

Backstage

PostgreSQL

Redis

MongoDB

Kubernetes (GKE)

ArgoCD

Helm

GitHub Actions

Terraform

LLMs in production

Education

Bachelor's degree in Computer Science or related field

Tools

Backstage plugins

PostgreSQL

Redis

Job description

ZoomInfo is hiring for a Senior Software Engineer to own services across a 20+ microservice Backstage platform. You’ll build REST/GraphQL APIs with TypeScript/Node.js and extend the catalog with ingestion from Helm, ArgoCD, GCP, and GitHub.

You’ll ensure platform reliability on GKE, implement ML-enabled features, and collaborate with governance, architecture, and infra teams to deliver self-service tooling.