Principal Backend Architect - Multi-Tenant SaaS Leader

Horizon3.ai; United States; Remote; USD 255,000 - 295,000; Full time

Benefits offered by this job

Inclusive Team

Growth Opportunities

Hybrid & Remote Work

Competitive Compensation

Stock Options

Job summary

Horizon3.ai is seeking a Principal Software Engineer for the Enterprise Platform to guide foundational services powering NodeZero and related customer experiences. You will influence licensing, entitlements, onboarding, notifications, and MSP/MSSP workflows.

You will architect and implement secure, reliable systems at scale, mentor senior engineers, and collaborate with product, security, and business partners to set technical direction across teams.

Qualifications

• Proven track record delivering backend services in production environments.
• Experience designing multi-tenant SaaS platforms and APIs.
• Demonstrated leadership and impact beyond a single team.
• Strong communication with technical and business stakeholders.
• Hands-on contributor with the ability to mentor others.

Responsibilities

• Set long-term technical direction for Enterprise Platform capabilities.
• Architect multi-tenant services with scalable account models and data access.
• Collaborate with engineering, product, and business leaders to prioritize investments.
• Lead high-impact initiatives from concept to durable solutions.
• Stay hands-on with implementations and review critical systems.

Skills

Backend services

Multi-tenant SaaS

Architectural judgment

Leadership/mentorship

Communication

Education

Bachelor's degree in CS/CE

Tools

Python

Go

Java

TypeScript

AWS

PostgreSQL

GraphQL

Docker

Kubernetes

Job description

Horizon3.ai is seeking a Principal Software Engineer for the Enterprise Platform to guide foundational services powering NodeZero and related customer experiences. You will influence licensing, entitlements, onboarding, notifications, and MSP/MSSP workflows.

You will architect and implement secure, reliable systems at scale, mentor senior engineers, and collaborate with product, security, and business partners to set technical direction across teams.