Senior Backend Engineer, Integrations

🔥 7 minutes ago

🇺🇸 United States – Remote

💵 $170k - $235k / year

⏰ Full Time

🟠 Senior

💻 Solutions Engineer

👻 Ghost score 20%

What it means: how likely this posting is sitting open without active hiring.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.How we score it: age, reposts, open roles vs team size, how fast jobs close, and whether pay is listed.Fine print: an estimate from public data, not a judgment of the company. Real jobs can score high, so treat it as a hint, not a fact.

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Horizon3.ai

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2019

🔒 Cybersecurity

🤖 Artificial Intelligence

☁️ SaaS

Cybersecurity • Artificial Intelligence • SaaS

Horizon3. ai is a cybersecurity company that specializes in autonomous penetration testing through its platform, NodeZero. The company's mission is to proactively identify and address attack vectors before they can be exploited, allowing organizations to continuously assess their security posture across various environments including cloud, IoT, and on-premises systems. Founded by veterans from the US Special Operations and National Security sectors, Horizon3. ai offers a self-service SaaS solution that provides organizations with insights into their security vulnerabilities without requiring persistent or credentialed agents.

📋 Description

• Evolve the internal GraphQL-federated API into a customer-facing product with permissions, multi-account scoping, versioning, schema evolution, and documentation • Build and operate a shared Integration Router with reusable authentication, health checks, workflow execution, connector libraries, vendor adapters, secrets management, and Kafka-triggered dispatch services • Ship and maintain integrations with CrowdStrike, Splunk, ServiceNow, Jira, Palo Alto, SentinelOne, and other SIEM, EDR, and ticketing tools • Expand the customer-facing MCP server and agentic workflow capabilities across US, EU, and Australia production environments • Share on-call responsibility for production observability across Datadog, Kafka-triggered services, and multiple environments • 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 and OAuth proxy layer, including tool authentication and agentic workflow support • Collaborate with frontend engineers, product managers, and security-domain teams to deliver integrated customer experiences • Mentor junior and mid-level engineers • Set standards for design quality, code quality, and operational rigor

🎯 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 • Experience building production applications on AWS, Azure, or GCP using Docker and Kubernetes • Ability to manage concurrent initiatives and prioritize effectively • Strong analytical and problem-solving skills with attention to detail • Strong technical documentation ability for an external developer audience • Effective communication and collaboration across engineering, product, and design • Expert proficiency in SQL • Experience with PostgreSQL and Neo4j • Hands-on experience building GraphQL backends, including federated graph architectures and schema evolution • Experience designing and operating public API platforms, including versioning, developer documentation, permission models, and multi-tenant access • Experience building or operating integrations platforms with reusable connector patterns, event-driven workflows, and asynchronous execution • Familiarity with OAuth/OIDC, service accounts, or machine identity patterns • Experience integrating third-party security or IT platforms • Experience with MCP, agentic frameworks, or other tool-protocol ecosystems • Production reliability experience with observability tooling, on-call ownership, vendor API drift handling, and safe failure design • Experience with CLI tooling, SDKs, or developer portals

🏖️ Benefits

• Equity package in the form of stock options for all full-time roles • Health, vision & dental insurance for you and your family • Flexible vacation policy • Generous parental leave • Career development opportunities • Inclusive culture • Collaborative environment • Remote and hybrid work models depending on role and location