# Senior Backend Engineer, Growth & MSSP 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: $170K to $235K base salary per year (USD)
- Posted: 2026-09-28
- Apply by: 2026-11-12
- Apply: https://jobs.ashbyhq.com/horizon3ai/e3a763c3-2e2c-4428-a68e-26c98e7410d4?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/horizon3-ai-senior-backend-engineer-growth-and-mssp/

## About the role

You'll be joining Growth & MSSP - the team that owns the foundational control plane governing what customers can access, what they've purchased, and how they're administered across NodeZero. If the Pentest Platform is the engine, Enterprise Platform is the operating model that determines who gets to use it and how. 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
- 7+ years of professional software engineering experience using modern object-oriented or functional languages (Python, Go, TypeScript, Java, Scala, C++, etc.)
- Experience building production applications on cloud platforms (AWS, Azure, GCP) using Docker and Kubernetes
- Experience building multi-tenant SaaS platforms with strong tenant isolation - particularly around access controls, data scoping, and account hierarchy
- Hands-on experience with RBAC, authorization, authentication, or SSO systems, and the patterns that make them consistent and auditable at scale
- Experience with licensing, subscription, entitlement, usage metering, or billing-adjacent systems - especially where correctness and consistency across services matter

Tags: Engineering

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/horizon3-ai-senior-backend-engineer-growth-and-mssp/