Senior Engineering Manager, MSSP

Horizon3 is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find and fix and verify exploitable attack vectors before criminals exploit them. Our flagship product, the NodeZeroTM platform, delivers production-safe autonomous pentests and other key assess...

We are a fusion of former U.S. Special Operations cyber operators, startup engineers, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools, false positives resulting in alert fatigue, blind spots, "checkbox” security culture, c...

We are looking for an engineering leader to own and scale the MSP/MSSP team at Horizon3. This leader will drive the platform capabilities that make NodeZero scalable and operationally excellent for Managed Service Providers (MSPs) and Managed Security Service Providers (MSSPs) — enabling partners to deliver NodeZero...

You will:
Build, mentor, and grow a team of backend and full-stack engineers focused on multi-tenant platform capabilities for MSP and MSSP partners.
Drive the platform strategy for MSP and MSSP use cases, including multi-tenancy, parent and sub-client relationships, tenant allocation, partner administration, client management dashboards, co-branding, and white-labeling.
Establish and evolve the architecture for account hierarchies, delegated administration, tenant isolation, and partner-specific entitlement and licensing flows.
Use design reviews, code reviews, and blameless retrospectives to drive a culture of quality and engineering excellence. Partner with Product, Customer Success, Partnerships, and Sales to align the team's roadmap with partner needs.
Balance partner support and operational needs while executing on a roadmap of platform improvements and new MSP/MSSP capabilities.
Hire and directly manage software engineers focused on multi-tenant and partner platform systems.
As a Manager, you will be responsible for:
Recruiting and onboarding talented individuals to support our organizational goals
Mentoring, coaching, equipping, and developing your team
Recognizing and retaining high performers
Leading horizontally with peer Management & Senior Leaders
Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice. 

Demonstrated experience leading engineering teams building and operating multi-tenant SaaS platforms at scale.
Strong technical background in multi-tenancy, account hierarchies, tenant isolation, delegated administration, and parent/sub-client models.
Experience with partner or channel software models — MSP, MSSP, OEM, white-label, reseller, or co-branded platforms.
Proven track record of taking complex platform capabilities from design through production and at-scale operation.
Strong working knowledge of at least one major cloud provider (AWS, GCP, or Azure). Experience with identity and access management, RBAC, authorization models, and enterprise account structures. AWS preferred.