Senior Backend Engineer, Integrations
Horizon3 · Remote · US, Remote ·
COMPENSATION
€•• – ••k
Listed on the employer's job board (Ashby)
- Senior Backend Engineer
- Fully remote or hybrid
- GraphQL + Python/Go
- Cybersecurity domain
- Equity package included
Join the Platform Integration Team at Horizon3 to transform internal APIs into a consistent, customer-facing product. You will build systems that connect the NodeZero autonomous pentesting platform with essential security and IT tools used by enterprises globally.
As a senior individual contributor, you will lead through technical judgment and high-quality execution. The team focuses on scalability, extensibility, and operational rigor, enabling customers to integrate NodeZero into their existing ecosystems seamlessly.
What you'll do
- Evolving internal GraphQL-federated API into a documented, permission-aware customer product
- Building a shared Integration Router for configurable connectors and workflow execution
- Shipping and maintaining integrations with tools like CrowdStrike, Splunk, and Jira
- Expanding the MCP server and agentic workflow capabilities across global production environments
- Sharing on-call responsibility for production observability including Datadog and Kafka services
- Mentoring junior and mid-level engineers while setting standards for code quality
What you'll need
- Bachelor's degree in Computer Science, Engineering, or a related field
- 7+ years of professional software engineering experience with modern languages
- Experience building production applications on AWS, Azure, or GCP using Docker and Kubernetes
- Strong ability to manage concurrent initiatives and prioritize effectively
- Excellent analytical skills with attention to detail and high quality standards
- Proficiency in technical documentation for external developer audiences
Nice to have
- Expert proficiency in SQL with PostgreSQL and Neo4j experience
- Hands-on experience building GraphQL backends with federated architectures
- Experience designing public API platforms with versioning and multi-tenant access
- Familiarity with OAuth/OIDC and machine identity patterns for API access
- Experience integrating with SIEMs, EDR tools, or ticketing systems
- Knowledge of MCP, agentic frameworks, or tool-protocol ecosystems
Stack
- GraphQL
- Python
- Go
- TypeScript
- Java
- Scala
- C++
- AWS
- Azure
- GCP
- Docker
- Kubernetes
- PostgreSQL
- Neo4j
- Kafka
- Datadog
How you'll work
- Remote and hybrid work models available depending on role and location
- Some roles may require regular presence at the Chicago office
- Share on-call responsibility for production services
What you get
- Competitive base salary range of $170,000 to $235,000 annually
- Equity package in the form of stock options for full-time roles
- Health, vision, and dental insurance for employees and families
- Flexible vacation policy and generous parental leave
- Inclusive culture with career development opportunities