Staff Software Engineer, Database Platform
Horizon3 AI2 hours ago
Remote, United StatesStaff+
Base Salary
$230k - $260k/yr
Responsibilities
- Set technical direction for database architecture, schema design, data modeling, indexing, and query contracts across teams.
- Own database performance engineering, including query analysis, execution-plan review, fixes, and regression observability.
- Lead reliability and operations for data stores, including replication, failover, backup validation, capacity planning, and incident response.
- Design and own safe production migration infrastructure supporting zero-downtime, reversible, and tested schema changes.
- Review application schemas, query patterns, and ORM usage while establishing database access-pattern standards.
- Write production code, create architecture designs, make performance and reliability decisions, and mentor P4 engineers through design reviews, code reviews, and technical pairing.
Requirements
- 8+ years of professional software engineering experience with deep specialization in database systems and data infrastructure.
- Expert PostgreSQL proficiency, including production query-plan tuning, replication management, and debugging vacuum and locking issues.
- Deep knowledge of database architecture trade-offs, normalization and denormalization, indexing, partitioning, and connection pooling at scale.
- Experience designing zero-downtime migration workflows in high-volume production environments.
- Experience with graph databases such as Neo4j or equivalent, and proficiency with time-series or columnar stores such as ClickHouse or TimescaleDB.
- Experience operating databases in Kubernetes or cloud-managed environments such as RDS or Cloud SQL at production scale.
- Proficiency in Go or Python for database tooling, access layers, and migration infrastructure.
- Track record of setting engineering standards, producing architecture documents, driving cross-team database decisions, and mentoring mid-level engineers.
- Preferred qualifications include multi-tenant database architecture experience, cybersecurity or large-scale vulnerability and asset-data experience, eBPF-based observability or advanced profiling experience, and vector-database or embedding-store experience.
Benefits
- Fully remote work at a 100% remote company, with a minimum 25Mbps consumer-grade broadband connection required.
- The role may require up to 5% travel.
- Health, vision, and dental coverage for employees and families, flexible vacation, and generous parental leave.
- Inclusive culture, growth and career-development opportunities, and a collaborative environment that encourages creativity.
Tech Stack
Categories
About Horizon3 AI
Horizon3 AI builds NodeZero, a proactive security platform that autonomously performs penetration testing and validates attack paths across on‑prem, cloud, and hybrid environments. The company sells its software by subscription to security and IT teams at enterprises and government agencies, helping prioritize and verify fixes. Founded in 2019 and headquartered in San Francisco, it is privately held and serves customers across regulated industries and the public sector.