Horizon3.ai · 5 days ago
Cyber Range Platform Engineer
United States
Full-time
Remote
Senior Level
$180K/yr - $220K/yr
5+ years expHorizon3.ai is a fast-growing, remote cybersecurity company dedicated to enabling organizations to proactively find and fix exploitable attack vectors. They are looking for a Platform Engineer to help lead the deployment and operation of their Cyber Range infrastructure, focusing on building and maintaining scalable and resilient environments.
Artificial Intelligence (AI)Cyber SecurityEnterprise SoftwareMachine LearningNetwork Security
Responsibilities
Implement highly scalable, secure, resilient cloud-native and on-premise application platforms that host vulnerable applications, configurations, and other services vital to research and development of our product
Identify, design, and implement improvements in deployment processes so engineers can begin development anytime with confidence
Design and implement tooling for the internal platform to collect telemetry data used to gauge its effectiveness in supporting H3's engineers
Help create an effective documentation culture within the Engineering Organization (Confluence, Documentation as code)
Participate in effective project management and work allocation (Jira, Agile Concepts)
Create Terraform modules and Ansible playbooks that are extensible across the infrastructure to reliably and effectively deploy vulnerable testing scenarios for engineering development efforts
Be a positive example of automation for infrastructure-as-code, platform operations, and overall CI/CD methodologies
Evaluate new technologies and patterns for automation, application hosting, and improving infrastructure provisioning. Recommend and define the work needed
Qualification
Required
5+ years of experience in DevOps, Platform engineering, or related roles
2+ years of experience in Systems and Network administration
Ability to manage concurrent initiatives and use effective judgment in prioritization and time management
Creative, self-motivated, pragmatic, disciplined, detail and results oriented
Excellent analytical/problem solving ability
Strong understanding and experience with solution design and flow
Strong technical documentation and communication
Tools (5+ years with each is ideal): Gitlab CI/CD, SSO (OIDC, SAML, Okta, Social Sign-ins), Infrastructure as Code (Terraform, CloudFormations), Secret Management (HashiCorp Vault, AWS Secret Manager, External Secrets Operator), Configuration Management (Ansible), Shell Scripting, Image Building (Packer, QEMU), Programming Languages (Python, Powershell), Container Engines (Docker), Kubernetes (RKE2, K3S, EKS), Logging and Metrics (Datadog, OpenSearch)
On-Premise Technologies: VMware vCenter Server/vSAN, Dell Network Switches, Fortinet Network Security Devices
Cloud Technologies: AWS/Azure Core Services - Compute (EC2, Lambda, EKS, Virtual Machines), Storage (S3, EBS, Image Gallery, Storage Accounts), Database (AuroraRDS - Postgres), Networking (VPC, VPCe, RT53, Resource Groups, vnets), Event-Driven Architecture (SQS, EventBus), Security (IAM Roles and Policies, KMS, Cloudtrail), User Management (Cognito, Organizations, SSO, Subscriptions, Tenants), Hybrid Domains (MSEntra/AzureAD)
Bachelors in Computer Science or STEM or equivalent experience
Preferred
MS in Computer Science a plus
Experience in Offensive or Defensive cyber security roles and/or certifications
Benefits
Competitive Compensation: We offer a highly competitive salary and benefits package.
Growth Opportunities: Be part of a dynamic and growing team with numerous career advancement opportunities.
Innovation-Driven Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking.
Flexible Work Environment: Enjoy the convenience and work-life balance that comes with remote work.
Inclusive and Diverse Team: We value diversity and promote an inclusive culture where everyone can thrive.
Additional compensation: All full-time roles are eligible for an equity package in the form of stock options.
Company
Horizon3.ai
Horizon3.ai offers an autonomous penetration testing platform that helps organizations proactively find and fix security vulnerabilities.
201-500 employees
Funding
Current Stage
Late StageTotal Funding
$178.5MKey Investors
Prosperity7 VenturesNew Enterprise AssociatesCraft Ventures
2026-01-13Series Unknown
2025-05-22Series D· $100M
2023-08-08Series C· $40M
Leadership Team
Snehal Antani
Co-Founder & CEO
Holly Grey
Chief Financial Officer
Recent News
2025-12-16
Company data provided by crunchbase