Staff Software Engineer, Partner Integrations at horizon3ai · LumiJobs

Responsibilities

The Expert Engineer on the Partner Integrations team is the technical anchor for how NodeZero connects to the security ecosystem. Our integrations with CrowdStrike, SentinelOne, Splunk, ServiceNow, and dozens of other platforms are how customers turn NodeZero findings into action — they're not an afterthought, they're a core part of the product. You will set the technical direction for integration architecture, define the reliability and observability standards the team builds to, and own the most complex integration surfaces personally.
This is a hands-on staff-level role. You will write production code, produce architecture designs, mentor engineers, and be the person your team and the Engineering Manager turn to when a hard problem doesn't have an obvious answer. The team is building a portfolio of integrations on a shared framework — your job is to make that framework excellent and ensure every integration built on it is reliable enough that customers never have to think about it. This role reports to the Partner Integrations Engineering Manager.
Integration Architecture: Design and own the technical framework that all Partner Integrations connectors are built on — authentication lifecycle, event delivery semantics, retry and idempotency patterns, schema mapping, and observability
High-Complexity Integrations: Own direct implementation of the most technically demanding integration surfaces — platforms with complex auth flows, high-volume event schemas, or sensitive customer data handling requirements
Reliability Standards: Set the reliability and observability bar for the team: define what a production-ready integration looks like, write the review checklist, and enforce it through code review and design review
Partner API Expertise: Maintain deep knowledge of the APIs and event models of Horizon3's most important integration partners; be the team's reference point when the documentation isn't enough
Mentorship: Mentor P3 and P4 engineers through design review, code review, and pairing; be the person who turns a good engineer into a great integration engineer
Incident Response: Own complex integration failures — diagnose root causes, coordinate with partner engineering teams when needed, and build the fixes that prevent recurrence
What You'll Bring
Integration Engineering
8+ years of professional software engineering experience with deep specialization in building production integrations, connectors, or API platforms
Expert-level understanding of API integration patterns: OAuth 2.0 / API key authentication lifecycle, webhook delivery and reliability, idempotency, pagination, rate limiting, partial failure handling, and schema evolution

Staff Software Engineer, Partner Integrations

Responsibilities

Qualification

Preferred

Benefits

Company

horizon3ai

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