Principal Software Engineer (GTMO/Mesh)

Mesh is ZoomInfo's internal AI platform. Thousands of employees use it every day — to run AI agents, build automated workflows, create microapps, and connect to the tools they already work in. It's a platform with a lot of moving parts, and a small engineering team that owns all of them.

We're looking for a Principal Software Engineer who raises the bar on how we ship, not just what we ship.

• →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

• Small team, real impact — your contributions are visible and your opinions carry weight
• We use AI tools heavily in our own workflow — Claude Code, AI-assisted code review, LLM-powered automation
• Distributed systems, LLM reliability, workflow orchestration, real-time integrations — the problems are hard and varied
• We move fast and we're getting smarter about how we do it

• 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

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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