Senior Backend Engineer, Integrations

atHorizon3.aiRemoteUS flagUnited StatesFull-timeSolutions EngineerSenior$170k – $235k/year

Posted Sep 29

This is a fully remote position, open to applicants in United States.

📋 Description

• Transform the internal GraphQL-federated API into a customer-oriented product featuring permissions, multi-account scoping, versioning, schema evolution, and comprehensive documentation.

• Develop and manage a shared Integration Router that includes reusable authentication, health checks, workflow execution, connector libraries, vendor adapters, secrets management, and Kafka-triggered dispatch services.

• Deliver and maintain integrations with CrowdStrike, Splunk, ServiceNow, Jira, Palo Alto, SentinelOne, and various other SIEM, EDR, and ticketing solutions.

• Enhance customer-facing MCP server and agentic workflow functionalities across production environments in the US, EU, and Australia.

• Share on-call duties for production observability encompassing Datadog, Kafka-triggered services, and multiple environments.

• Ensure production reliability for API and integration services, including aspects like monitoring, alerting, deployment, vendor API drift, rate limits, retries, and safe failure management.

• Contribute to the MCP platform and OAuth proxy layer, focusing on tool authentication and agentic workflow assistance.

• Work collaboratively with frontend engineers, product managers, and security-domain teams to create integrated customer experiences.

• Mentor junior and mid-level engineers to foster their growth.

• Establish standards for design quality, code quality, and operational excellence.


⛳️ Requirements

• Bachelor's Degree in Computer Science, Computer Engineering, or a related discipline.

• Over 7 years of professional software engineering experience utilizing modern object-oriented or functional programming languages.

• Proven experience in building production applications on AWS, Azure, or GCP with Docker and Kubernetes.

• Capability to manage multiple initiatives concurrently and prioritize tasks effectively.

• Strong analytical and problem-solving abilities with meticulous attention to detail.

• Proficient in creating technical documentation aimed at an external developer audience.

• Effective communication and collaboration skills across engineering, product, and design teams.

• Expert-level proficiency in SQL.

• Experience with PostgreSQL and Neo4j databases.

• Practical experience in developing GraphQL backends, including federated graph architectures and schema evolution.

• Background in designing and managing public API platforms, covering versioning, developer documentation, permission models, and multi-tenant access.

• Experience in building or managing integration platforms utilizing reusable connector patterns, event-driven workflows, and asynchronous execution.

• Familiarity with OAuth/OIDC, service accounts, or machine identity patterns.

• Experience in integrating third-party security or IT platforms.

• Knowledge of MCP, agentic frameworks, or other tool-protocol ecosystems.

• Background in production reliability, including observability tools, on-call ownership, vendor API drift management, 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 positions.

• Comprehensive health, vision, and dental insurance for you and your family.

• Flexible vacation policy.

• Generous parental leave provisions.

• Opportunities for career development.

• An inclusive workplace culture.

• A collaborative work environment.

• Options for remote and hybrid work models based on role and location.

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