Principal Software Engineer, Agentic Data Platform

The role

The Principal Engineer for Database Platform is the technical anchor for NodeZero's data infrastructure. You will own database architecture decisions, define standards for data storage and migration, and provide technical leadership for the Database Platform team.

What you will do

• Define and drive the technical roadmap for the Database Platform
• Own complex database architecture decisions including schema design and partitioning
• Act as the expert on PostgreSQL at scale
• Architect and guide the evolution of the graph-based asset model
• Own schema design review processes
• Mentor P5 and P4 engineers through code review, design review, and pairing
• Partner with cross-functional teams to define data contracts and architectural guardrails

Required qualifications

• Deep, production-proven PostgreSQL expertise
• Experience architecting multi-tenant databases at scale
• Experience with schema migration at scale in production systems
• Familiarity with graph data models and graph databases or graph-like query patterns in relational systems
• Proficient in Go or Python
• Demonstrated track record of defining database architecture at scale
• Strong opinions on data architecture tradeoffs
• Ability to communicate complex database decisions clearly in writing
• Ability to drive database standards across multiple teams without direct reporting authority
• Experience establishing database engineering culture
• Track record of growing engineers through code review, pair programming, and architectural mentorship
• Minimum 25Mbps consumer grade broadband connection

Nice to have

• Background in cybersecurity data
• Experience with time-series databases (TimescaleDB, InfluxDB)
• Familiarity with data platform compliance requirements (SOC 2 Type II, FedRAMP, GDPR/CCPA)
• Experience with analytical query patterns or BI/reporting workloads
• Contributions to open-source database tooling or PostgreSQL ecosystem projects

Benefits

• Health, vision & dental care for you and your family
• Flexible vacation policy
• Generous parental leave
• Remote work

About the company

Horizon3.ai is a fast-growing, remote cybersecurity company dedicated to enabling organizations to proactively find, fix and verify exploitable attack vectors. The team is a fusion of former U.S. Special Operations cyber operators, startup engineers, and cybersecurity practitioners.