Horizon3 AI

Staff Software Engineer, Partner Integrations

Horizon3 AI
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2 hours ago
Remote, United StatesStaff+

Base Salary

$230k - $260k/yr

Responsibilities

  • Design and own the shared technical framework for Partner Integrations, including authentication lifecycle, event delivery, retries, idempotency, schema mapping, and observability.
  • Implement the most technically demanding integrations involving complex authentication, high-volume event schemas, and sensitive customer data.
  • Define and enforce reliability and observability standards through production-readiness checklists, code reviews, and design reviews.
  • Maintain deep expertise in partner APIs and event models and serve as the technical reference for integration behavior.
  • Mentor P3 and P4 engineers through architecture and code reviews and pairing.
  • Own complex integration incidents, coordinate with partner engineering teams, diagnose root causes, and implement preventive fixes.

Requirements

  • Require 8+ years of professional software engineering experience with deep specialization in production integrations, connectors, or API platforms.
  • Require expert proficiency in Go or Python.
  • Require expert knowledge of OAuth 2.0 and API key authentication, webhooks, idempotency, pagination, rate limiting, partial failure handling, and schema evolution.
  • Require experience with distributed-systems reliability patterns such as at-least-once delivery, dead-letter queues, and circuit breakers.
  • Require experience designing and operating integration observability using structured logging, metrics, alerting, and dashboards.
  • Require comfort working in cloud-native and containerized environments, including Kubernetes and AWS.
  • Require a track record of setting engineering standards, producing architecture documents, and driving technical decisions across teams and partner boundaries.
  • Require experience mentoring mid-level engineers through design and code reviews.
  • Preferred experience includes integrations with CrowdStrike Falcon, SentinelOne, Splunk, ServiceNow, Jira, or similar enterprise security and ITSM platforms.
  • Preferred qualifications include cybersecurity ecosystem knowledge, cross-platform field-mapping schema design, and familiarity with vendor marketplace certification and partner API agreement processes.

Benefits

  • Fully remote work environment with hybrid and remote models depending on role and location; some roles may require regular Chicago office presence.
  • Up to 5% travel may be required.
  • Health, vision, and dental insurance are available for employees and their families.
  • Flexible vacation policy and generous parental leave are offered.
  • Inclusive, collaborative culture with growth and career development opportunities.

Tech Stack

Categories

Horizon3 AI

About Horizon3 AI

501-1,000 employees

Horizon3 AI builds NodeZero, a proactive security platform that autonomously performs penetration testing and validates attack paths across on‑prem, cloud, and hybrid environments. The company sells its software by subscription to security and IT teams at enterprises and government agencies, helping prioritize and verify fixes. Founded in 2019 and headquartered in San Francisco, it is privately held and serves customers across regulated industries and the public sector.

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