Senior Engineering Manager, MSSP

Horizon3.ai

. Own and scale the MSP/MSSP engineering team at Horizon3 .

Posted 9/23/2026full-timeRemote • United StatesSenior💰 $260,000 - $280,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in leading engineering teams to build and operate multi-tenant SaaS platforms, with a strong focus on architecture, partner administration, and operational excellence. Proven ability to mentor and develop engineering talent while balancing strategic delivery with partner needs.

Highest-signal resume keywords

Multi-Tenant SaaS Platform DevelopmentAWS, GCP, or Azure ProficiencyIdentity and Access ManagementEngineering Team LeadershipArchitecture Decision-Making

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Multi-TenancyAccount HierarchiesTenant IsolationDelegated AdministrationPythonGoProcess DocumentationAuthorization ModelsComplex Platform DesignBilling Integrations

Soft Skills

Strong Communication SkillsMentoring and CoachingTeam Development

Industry Keywords

MSPMSSPOEMWhite-LabelCo-BrandingCybersecurityThird-Party Risk ManagementCompliance-Adjacent CapabilitiesSubscription ManagementPartner Administration

Tech Stack

Tools & technologies

AWSAzureCyber SecurityGoogle Cloud PlatformPythonGo

About the role

Key responsibilities & impact

Own and scale the MSP/MSSP engineering team at Horizon3
Drive NodeZero platform capabilities for Managed Service Providers and Managed Security Service Providers
Build, mentor, and grow backend and full-stack engineering teams focused on multi-tenant platform capabilities
Define platform strategy for multi-tenancy, parent and sub-client relationships, tenant allocation, partner administration, client dashboards, co-branding, and white-labeling
Establish architecture for account hierarchies, delegated administration, tenant isolation, and partner-specific entitlement and licensing flows
Use design reviews, code reviews, and blameless retrospectives to promote engineering quality
Partner with Product, Customer Success, Partnerships, and Sales to align roadmaps with partner needs
Balance partner support and operational needs with platform improvements and new MSP/MSSP capabilities
Recruit, onboard, manage, mentor, coach, develop, recognize, and retain engineering talent
Lead horizontally with peer management and senior leadership

Requirements

What you’ll need

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, including MSP, MSSP, OEM, white-label, reseller, or co-branded platforms
Proven track record taking complex platform capabilities from design through production and at-scale operation
Strong working knowledge of AWS, GCP, or Azure; AWS preferred
Experience with identity and access management, RBAC, authorization models, and enterprise account structures
Experience driving architecture decisions through structured design reviews, RFCs, or similar frameworks
Ability to write clear, durable process documentation
Comfort with modern backend languages such as Python or Go
Proven ability to hire, develop, and retain high-performing engineers in remote or distributed environments
Strong communication skills across technical and non-technical audiences
Ability to balance strategic roadmap delivery with partner support and operational needs
Background in cybersecurity or security platforms, third-party risk management, compliance-adjacent capabilities, licensing, entitlements, subscription management, or billing integrations is nice to have
Legally authorized to work in the United States

Benefits

Comp & perks

Equity package in the form of stock options for all full-time roles
Health, vision, and dental insurance for you and your family
Flexible vacation policy
Generous parental leave
Career development opportunities
Inclusive and collaborative work culture
Remote and hybrid work models depending on role and location
Up to 10% business travel