Principal Software Engineer (GTMO/Mesh)

ZoomInfo is a Go-To-Market Intelligence Platform that empowers businesses to grow faster with AI-ready insights. They are seeking a Principal Software Engineer to own features across the full stack, respond to production incidents, and build core platform capabilities for their internal AI platform, Mesh.

Responsibilities:

• Owning features across the full stack — React frontends, backend APIs, cloud infrastructure — from design through production
• Responding to production incidents and shipping fixes
• Building and improving core platform capabilities: AI agents, orchestration workflows, microapp infrastructure, LLM integrations
• Developing SDKs and tooling for engineers who build on top of Mesh
• Championing quality and reliability — tests, coverage, habits that prevent regressions
• Collaborating across teams and supporting users directly through our Slack support channels
• Mentoring engineers through code reviews and technical guidance

Requirements:

• 12+ years of software engineering experience with a track record of delivering reliable, scalable systems
• Strong full-stack skills — React/TypeScript, backend services, cloud infrastructure
• Experience building in a cloud-native environment, preferably GCP — Kubernetes, Cloud Functions, Pub/Sub, managed databases
• Solid understanding of SQL and NoSQL databases — Postgres, MongoDB, Redis
• Experience owning production systems — logs, incident triage, fixes under pressure
• A real commitment to software quality — testing strategy, code review, regression prevention
• Security awareness built into how you work
• You disagree and commit — push back when something is wrong, but don't relitigate once a decision is made
• Clear communication and experience in fast-moving, high-ownership environments
• Experience with LLMs — Claude, GPT, Llama — and building applications on top of them
• Familiarity with context engineering and RAG patterns
• Experience with MCP or AI tool integrations
• Experience with Temporal or similar workflow orchestration systems
• Experience with vector databases — Pinecone, pgvector, etc
• Experience building developer-facing SDKs or platform tooling
• Experience with CI/CD pipelines, particularly GitHub Actions