Principal Software Engineer, Database Platform

🔥 14 hours ago

🇺🇸 United States – Remote

💵 $255k - $290k / year

⏰ Full Time

🔴 Lead

🔙 Backend Engineer

👻 Ghost score 20%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Horizon3.ai

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2019

🔒 Cybersecurity

🤖 Artificial Intelligence

☁️ SaaS

Cybersecurity • Artificial Intelligence • SaaS

Horizon3. ai is a cybersecurity company that specializes in autonomous penetration testing through its platform, NodeZero. The company's mission is to proactively identify and address attack vectors before they can be exploited, allowing organizations to continuously assess their security posture across various environments including cloud, IoT, and on-premises systems. Founded by veterans from the US Special Operations and National Security sectors, Horizon3. ai offers a self-service SaaS solution that provides organizations with insights into their security vulnerabilities without requiring persistent or credentialed agents.

📋 Description

• Define and drive the Database Platform technical roadmap with engineering leadership and the Pentest Platform organization • Own database architecture decisions including schema design, partitioning strategies, migration patterns, and scalability approaches • Write design documents that establish the team's shared technical model • Serve as the definitive PostgreSQL expert on query optimization, indexing, partitioning, replication, and connection pooling • Architect and guide the evolution of NodeZero's graph-based asset model representing hosts, services, credentials, and vulnerabilities across pentests • Govern schema design reviews and ensure migrations are safe, reversible, and zero-downtime • Build tooling and engineering practices for rigorous schema changes • Mentor P5 and P4 engineers through code reviews, design reviews, and pairing • Partner with Data Ingestion, Asset Inventory, API Platform, and Security Research on data contracts, query performance standards, and architectural guardrails • Write production code and set technical direction for the Database Platform team

🎯 Requirements

• Deep, production-proven PostgreSQL expertise, including query planner internals, advanced indexing, partitioning, logical replication, vacuuming at scale, and connection pool tuning • Experience architecting multi-tenant databases at scale, including row-level security and tenant isolation • Experience with production schema migrations at scale, including zero-downtime migrations, backwards-compatible schema evolution, and migration tooling such as Flyway or golang-migrate • Familiarity with graph data models and graph databases such as Neo4j or AWS Neptune, or graph-like relational query patterns such as recursive CTEs, ltree, and adjacency lists • Proficient in Go or Python and able to write production application code • Demonstrated track record defining database architecture at scale from design document through production across multiple companies or teams • Strong understanding of data architecture tradeoffs, including normalization vs. denormalization, consistency vs. availability, OLTP vs. OLAP separation, and schema-first vs. schema-last design • Ability to reason about long-horizon schema design and 10× data-volume growth • Ability to communicate complex database decisions clearly in design documents, ADRs, and cross-team reviews • Proven ability to drive database standards across multiple teams without direct reporting authority • Experience establishing schema review, migration safety, and query performance review processes • Track record of mentoring engineers through code review, pair programming, and architectural mentorship • Cybersecurity data background, time-series database experience, compliance familiarity, analytical query or BI/reporting experience, and open-source contributions are nice to haves • Must be legally authorized to work in the United States • Full-time availability

🏖️ Benefits

• Equity package in the form of stock options for all full-time roles • Health, vision & dental insurance for you and your family • Flexible vacation policy • Generous parental leave • Career development opportunities • Inclusive and collaborative work culture • Fully remote work model • Up to 5% travel