# Staff Backend Engineer, Internal at Horizon3.ai

- Company: Horizon3.ai
- What the company does: Horizon3 uses real-world attacks to safely show what attackers can actually do in your environment—so you can fix and prove what matters. Backed by NEA.
- Company website: https://horizon3.ai/
- Type: Startups (AI role)
- Level: Senior
- Location: US, Remote
- Work setup: Remote
- Pay: $229K to $270K base salary per year (USD)
- Posted: 2026-11-06
- Apply by: 2026-12-21
- Apply: https://jobs.ashbyhq.com/horizon3ai/2c2c9a11-2c3b-4232-b9e4-116574b4e4af?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/horizon3-ai-staff-backend-engineer-internal/

## About the role

As a Staff Backend Engineer on the Internal Attack team, you'll set technical direction for the backend systems that power NodeZero's internal pentesting capabilities, from architecture and development through deployment and production operations. You'll lead high-impact work across the services and data pathways that turn the attack team's knowledge-graph output into reliable customer-facing results, including the ETL pipelines, relational data model, SQL queries, GraphQL endpoints, and supporting APIs. Found on 1752vc Careers, the job board for startup and VC roles.

## What they're looking for

- Bachelor's Degree in Computer Science, Computer Engineering, or a related field
- 8+ years of professional software engineering experience using modern object-oriented or functional languages (Python, Java, Go, Scala, C++, TypeScript, etc.)
- Demonstrated technical leadership on high-complexity backend or data-platform initiatives, including setting direction and delivering work across multiple teams or stakeholders
- Experience designing, building, and operating production data-processing, ETL, or distributed task-processing systems at scale
- Hands-on experience with backend APIs, relational data models, and SQL in production systems
- Experience building applications on cloud computing platforms such as AWS, Azure, or GCP, and using container technologies such as Docker

Tags: Engineering

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/horizon3-ai-staff-backend-engineer-internal/