Senior Backend Engineer, Integrations
Horizon3 AI21 hours ago
Remote, United StatesSenior
Base Salary
$170k - $235k/yr
Responsibilities
- Design and implement backend GraphQL APIs, including federated subgraphs, schema evolution, permissions, and multi-account query scoping.
- Build and extend the Integration Router with connector libraries, workflow configuration, secrets management, vendor adapters, and Kafka-triggered dispatch services.
- Own production reliability for API and integration services, including monitoring, alerting, deployment, vendor API drift, rate limits, retries, and safe failure handling.
- Contribute to the MCP platform, OAuth proxy layer, tool authentication, and agentic workflow capabilities.
- Integrate NodeZero with security and IT platforms including CrowdStrike, Splunk, ServiceNow, Jira, Palo Alto, and SentinelOne.
- Collaborate with frontend engineers, product managers, and security-domain teams to deliver integrated customer experiences.
- Mentor junior and mid-level engineers and help establish standards for design quality, code quality, and operational rigor.
- Share on-call responsibility for production observability across Datadog and Kafka-triggered services.
Requirements
- Bachelor’s degree in Computer Science, Computer Engineering, or a related field.
- 7+ years of professional software engineering experience using modern object-oriented or functional languages such as Python, Go, TypeScript, Java, Scala, or C++.
- Experience building production applications on AWS, Azure, or GCP using Docker and Kubernetes.
- Expertise with SQL and experience with relational PostgreSQL and graph Neo4j databases.
- Hands-on experience building GraphQL backends, including federated graph architectures and schema evolution.
- Experience designing and operating public API platforms with versioning, developer documentation, permission models, and multi-tenant access.
- Experience building or operating integrations platforms with reusable connectors, event-driven workflows, Kafka or similar systems, and asynchronous execution.
- Familiarity with OAuth, OIDC, service accounts, or machine identity patterns.
- Experience integrating third-party security or IT platforms, such as SIEM, EDR, ticketing, or workflow automation systems.
- Experience with MCP, agentic frameworks, tool-protocol ecosystems, observability tooling, on-call ownership, vendor API drift handling, and safe-failure design is preferred.
- Experience with customer-facing developer surfaces such as CLI tooling, SDKs, or developer portals is preferred.
- Strong prioritization, independent execution, analytical problem-solving, technical documentation, communication, collaboration, and mentoring skills.
Benefits
- Remote and hybrid work models are available depending on role and location, including a Chicago office where some roles require regular in-office presence.
- Health, vision, and dental insurance are provided for employees and their families.
- Flexible vacation policy and generous parental leave are offered.
- Full-time roles are eligible for equity in the form of stock options.
- The company promotes an inclusive culture with professional growth opportunities.
Tech Stack
Apache KafkaAWSAzureC++DatadogDockerGoGoogle Cloud PlatformGraphQLJavaKubernetesNeo4jPostgreSQLPythonScalaSplunkSQLTypeScript
Categories
About Horizon3 AI
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.