Federal Platform Engineer

Get to Know Us Horizon3

is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find, fix and verify exploitable attack vectors before criminals exploit them. Our flagship product, the NodeZeroTM platform, delivers production-safe autonomous pentests and other key assessment operations that scale across the largest internal, external, cloud, and hybrid cloud environments. NodeZero has been adopted by organizations of all sizes, from small educational institutions to government agencies and Global 100 enterprises. It is used by IT Ops/SecOps teams, consulting pentesters, and MSSPs and MSPs. We are a fusion of former U.S. Special Operations cyber operators, startup engineers & operators, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools and false positives, resulting in alert fatigue, blind spots, "checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants. Collectively, we are a team of learn-it-alls, committed to a culture of respect, collaboration, ownership, and results. Summary/Overview We are looking for a Federal Platform Engineer to help lead the deployment and operation of our product infrastructure in multiple federal environments ranging from FedRAMP through Classified workloads. Your goal will be to help build, maintain and improve our platform running in AWS. Your expertise in cloud infrastructure, kubernetes, cloud infrastructure, and tools like Terraform, Ansible, and GitLab CI will be essential in creating scalable and secure systems that enable innovative experimentation. Join us in shaping the future of our platform, driving growth and empowering developers with a flexible and efficient environment. Essential Functions Implement highly scalable, secure, resilient cloud-native application platforms that host core company applications, toolings, and other services vital to enabling our product to perform in all AWS regions where we are deployed.

Identify, design, and deploy improvements in development and deployment processes so engineers can begin deploying 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 Crossplane compositions that are easily consumed by all of engineering.

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.

Competencies 5+ years of experience in DevOps, Platform engineering, or related roles.

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: Experience using Claude Code or other AI-enabled development tooling

Gitlab CI/CD

Argo Events, Argo Workflows, Argo CD

SSO (OIDC, SAML, Okta, Social Sign-ins)

Infrastructure as Code (Terraform, Crossplane)

Secret Management (HashiCorp Vault, AWS Secret Manager, External Secrets Operator)

Configuration Management (Ansible)

Shell Scripting

Programming Languages (GoLang required, Python a plus)

Container Engines (Docker)

Kubernetes (RKE2, K3S, EKS)

Logging and Metrics (Datadog, OpenSearch)

Cloud Technologies: AWS Core Services Compute (EC2, Lambda, EKS)

Storage (S3, EBS)

Database (AuroraRDS - Postgres)

Networking (VPC, VPCe, RT53)

Event-Driven Architecture (SQS, EventBus)

Security (IAM Roles and Policies, KMS, Cloudtrail)

User Management (Cognito, Organizations, SSO)

Education: Bachelors in Computer Science or STEM or equivalent experience

MS in Computer Science a plus

Citizenship/Clearance US Citizen Required

Possess or ability to gain and maintain Top Secret security clearance required.

Nice to Haves Experience in FedRAMP, CC SRG, NIST 800-53, or Authority to Operate (ATO) process.

Other duties Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice. Why Horizon3 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.

Travel Required We are a fully remote company, and this job may require up to 5%of travel to be successful. Job-related travel expenses are reviewed and must be approved by your manager. Compensation Disclosure In accordance with various State’s transparency regulations, we provide the following salary range information for this position: Base salary range: $199,750 to $230,000 annually. The exact salary will be determined based on the selected candidate’s location, qualifications, experience, and relevant skills.

Additional compensation: This role may also be eligible for performance bonuses, equity options, and other benefits which will be discussed during the interview process.

You Belong Here Horizon3 is not just an equal opportunity employer - we are a community that values diversity, equity, and inclusion as fundamental principles of our culture and success. We are dedicated to fostering a workplace where everyone feels welcome and respected, regardless of race, color, religion, sex, national origin, age, disability, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, hair length or any other legally protected status by law. Our commitment to diversity and inclusion means we strive to attract, develop, and retain a workforce that reflects the varied communities we serve. We believe that diverse perspectives drive innovation and strengthen our ability to create cutting-edge cybersecurity solutions. At Horizon3, every team member is valued and supported in an environment that encourages personal and professional growth. We welcome candidates from all backgrounds and experiences, and we encourage all qualified individuals to apply. Come be a part of Horizon3, where your unique contributions are recognized, and your potential is limitless. Other Duties Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice. Application Note In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information.