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# Staff Software Engineer, Backend MSSP

- **Company:** Horizon 3 AI, Inc
- **Location:** New York, NY, United States (Remote available)
- **Experience:** Expert
- **Salary:** $230,000.0 - $270,000.0
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Computing Platforms, Audit Trail, Code Review, Computer Engineering, Data Integrity, Data Security, Relational Databases, Distributed Systems, Internet Security, Python (Programming Language), PostgreSQL, Role-Based Access Control, Standard Sql, Software Engineering, SQL Databases, TypeScript, HybridCloud, Backend, Containerization, Kubernetes, Information Technology, Graphql, Api Design, Docker, Golang
- **Published:** November 4, 2026
- **Apply:** https://www.careerbuilder.com/job-details/staff-software-engineer-backend-mssp-new-york-ny--427671fc-06b1-4ed7-b6c5-aa43f9f0a150

## About the Role

Software Engineering, Consulting, Operational Audit, Government, Hybrid Cloud, Internet Security, Startup, Sales Management, Customer Relations, Technical Leadership, * Ability to lead broad technical initiatives, establish direction, and build alignment across teams.

 * Strong judgment around tenant isolation, security, data integrity, reliability, and customer impact.
 * Clear communication and technical writing, including the ability to explain architecture and tradeoffs to both technical and non-technical partners.
 * A mentoring mindset and commitment to raising engineering practices across the organization.
 * Hands-on ownership of production services, including operational follow-through and continuous improvement.

Required Education / Experience

 * Bachelor's degree in Computer Science, Computer Engineering, or a related field, or equivalent practical experience.
 * 8+ years of professional software engineering experience, including deep experience with backend systems and APIs.
 * Track record of leading architecture or technical direction for production multi-tenant, platform, or distributed systems.
 * Strong understanding of data modeling, service reliability, and security boundaries in customer-facing systems.
 * Ability to influence decisions across teams, mentor engineers, and communicate technical tradeoffs clearly.
 * Experience building and operating cloud-hosted services and taking ownership of production outcomes.

Required Tech Stack Experience

 * Deep experience building backend services in a modern language such as Python, Go, Java, or TypeScript.
 * Strong SQL and relational data modeling, API design, and production service-operating experience.
 * Experience with cloud-hosted systems and containerized applications such as Docker; familiarity with Kubernetes or a comparable orchestrator.
 * Experience with every example technology is not required; depth in relevant areas and the ability to guide sound technical decisions are important.

Work Authorization & Security Clearance Requirements

[If applicable, otherwise delete section]

Only US persons can interview for this role due to security clearance requirements by our customer(s) and/or vendor(s). Employee must be eligible for and successfully secure a US Federal Security Clearance as a condition of employment.

What Sets You Apart?

 * Deep experience with MSP/MSSP, reseller, white-label, or partner software platforms.
 * Experience with delegated administration, parent/sub-client account models, tenant isolation, RBAC, and audit logs.
 * Strong proficiency in Python or Go, SQL/PostgreSQL, AWS, GraphQL, Docker, and Kubernetes.
 * Background in cybersecurity or third-party risk management, licensing, entitlements, or compliance-adjacent capabilities.

## Description

* Set technical direction for partner and multi-tenant platform services, including account hierarchies, tenant isolation, delegated administration, and partner workflows.
 * Lead architecture and implementation of complex capabilities for client and sub-client management, asset allocation or deprecation, and partner administration.
 * Define patterns for secure data boundaries, API design, reliability, observability, and operational readiness.
 * Remain hands-on in complex technical work and help teams make decisions when requirements or tradeoffs are ambiguous.
 * Partner with Product, customer-facing teams, and adjacent engineering groups to align platform capabilities with partner needs.
 * Mentor engineers through design reviews, code reviews, pairing, and technical documentation.
 * Own complex production issues and drive improvements that strengthen service reliability and prevent recurrence.