Staff Software Engineer, Partner Integrations

What You'll Do

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.

Responsibilities

• 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

• Track record building integrations with major security platforms (EDR, SIEM, SOAR, ITSM) or comparable enterprise SaaS ecosystems — you know what it takes to make a connector that holds up in production

Backend & Systems

• Expert proficiency in Go or Python — this team's primary languages

• Strong grasp of distributed systems reliability patterns applicable to integration infrastructure: at-least-once delivery, dead-letter queues, circuit breakers

• Experience designing and operating integration observability: structured logging, metrics, alerting, and dashboards that surface failures before customers do

• Comfort in cloud-native and containerized environments (Kubernetes, AWS)

Technical Leadership

• Track record of setting engineering standards that other engineers adopt — not just writing good code but making the right approach the obvious one

• Ability to produce clear architecture documents and drive technical decisions across team and partner boundaries

• Experience mentoring mid-level engineers through design review and code review

Nice to Haves

• Hands-on experience with any of Horizon3's integration partners: CrowdStrike Falcon, SentinelOne, Splunk, ServiceNow, Jira, or similar enterprise security and ITSM platforms

• Background in the cybersecurity ecosystem — understanding how SOC teams, MSSPs, and security engineers actually use the tools NodeZero integrates with

• Experience designing field-mapping schemas for cross-platform data translation

• Familiarity with integration certification processes (vendor marketplace programs, partner API agreements)

Travel Required

We are a fully remote company, and this job may require up to 5% of travel to be successful.

In accordance with various State's transparency regulations, we provide the following salary range information for this position:

• Base salary range: $229,500 - $260,000 annually. The exact salary will be determined based on the selected candidate's location, qualifications, experience, and relevant skills.

Perks of Horizon3

• Inclusive Team: We value diversity and promote an inclusive culture where everyone can thrive.

• Hybrid & Remote Work: We embrace a mix of remote and hybrid work models depending on role and location, including our Chicago office, where some roles require regular in-office presence.

You Belong Here

Horizon3 is not just an equal opportunity employer - we are a community that values diversity, equity, and inclusion as fundamental principles of our culture and success. We are dedicated to fostering a workplace where everyone feels welcome and respected, regardless of race, color, religion, sex, national origin, age, disability, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, or any other legally protected status by law.