ZoomInfo is the largest B2B data and intelligence platform — public since 2020. Owns Chorus, Insent, RingLead, and others. The interview emphasizes data engineering at extreme scale (billions of contacts), data quality, and the unique challenges of public-record-based intelligence.
Process
Recruiter screen → 60-minute coding phone (DSA medium) → onsite virtual: 2 coding, 1 system design, 1 craft deep-dive, 1 behavioral. Cycle: 4–5 weeks.
What they actually ask
- Design a B2B contact graph at billions-of-edges scale
- Design data quality and verification pipelines
- Design real-time intent signal tracking
- Coding: medium DSA, often with graph or data-pipeline framing
- Behavioral: customer focus, ownership, mature platform work
Levels and comp (2026)
- SE II: $135K–$170K total
- Senior SE: $200K–$260K
- Staff: $290K–$380K
- Principal: $400K–$520K
Prep priorities
- Be fluent in Go or Java (bulk of the codebase)
- Understand large-scale data engineering and graph databases
- Brush up on B2B sales intelligence patterns
Frequently Asked Questions
Is ZoomInfo remote-friendly?
Hybrid in Vancouver WA (HQ), Waltham MA, Bethesda. Some engineering roles remote within US.
How does ZoomInfo compare to Apollo or Cognism?
ZoomInfo is the enterprise leader by data depth. Apollo competes on SMB. Cognism is European-strong. ZoomInfo pays mid-tier; below FAANG.
What is the engineering culture?
Mature, customer-driven, calmer pace post-2022 macro challenges. Strong work-life balance.