230K–260K USD / year
Staff Software Engineer, Database Platform
BackendRemote — United States
Published on 2026-10-23
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About this role
Set technical direction for Horizon3’s database architecture and reliability as its NodeZero platform scales across large volumes of security assessment data. This is a hands-on staff role involving production engineering, performance and reliability decisions, and mentoring engineers.
About the company
Horizon3.ai is a technology company specializing in cybersecurity solutions, focusing on automated penetration testing and threat detection for enterprises. They provide a range of services aimed at enhancing security posture and risk management for organizations across various sectors.
The team
Database Platform team, reporting to the Data Platform Engineering Manager.
Stack
PostgreSQLNeo4jClickHouseTimescaleDBGoPythonKubernetesRDS
What you'll do
- Set database architecture, schema, data-modeling, indexing, and query standards
- Analyze and improve query performance and build observability to catch regressions
- Own database reliability, replication, failover, backups, capacity planning, and incident response
- Build safe schema-migration workflows, including zero-downtime and reversible migrations
- Advise application teams on schemas, query patterns, and ORM usage
- Mentor engineers through design reviews, code reviews, and technical pairing
What we're looking for
- 8+ years of software engineering experience specializing in database systems or data infrastructure
- Expert PostgreSQL skills, including query-plan tuning, replication, vacuum, and locking issues
- Strong knowledge of database architecture, indexing, partitioning, and connection pooling
- Experience designing zero-downtime migrations in high-volume production environments
- Experience with graph databases and time-series or columnar stores
- Experience operating production databases in Kubernetes or cloud-managed environments
- Proficiency in Go or Python
- Track record setting engineering standards, writing architecture documents, and mentoring engineers
Nice to have
- Multi-tenant database architecture and customer data isolation experience
- Cybersecurity experience or experience handling vulnerability, asset, or network topology data at scale
- Familiarity with eBPF-based database observability or advanced profiling
- Experience with vector databases or embedding stores
Benefits
- Stock options may be available
- Health, vision, and dental coverage for employees and family
- Flexible vacation policy
- Generous parental leave