About the role

Federal Platform Engineer (Full Remote)

Join Horizon3 to lead the deployment and operation of product infrastructure in multiple federal environments, including FedRAMP and Classified workloads.

Responsibilities

Lead deployment and ongoing operation of product infrastructure across multiple federal environments.
Implement scalable, secure, resilient cloud-native application platforms for core company services.
Identify, design, and deploy improvements to development and deployment processes so engineers can deploy with confidence.

Requirements

5+ years of experience in DevOps, Platform Engineering, or related roles.
Ability to manage concurrent initiatives and prioritize effectively.
Strong solution design and “flow” understanding.
Excellent analytical/problem-solving skills.
Strong technical documentation and communication.
Creative, self-motivated, pragmatic, disciplined, detail- and results-oriented.
Ability to possess or obtain and maintain Top Secret security clearance (required).
US Citizen required.

Technical Skills (Required/Strongly Preferred)

AWS Core Services.
Kubernetes ecosystem and tooling: Argo Events, Argo Workflows, Argo CD.
Event-driven architecture (e.g., SQS, EventBus).
Infrastructure as Code: Terraform (Crossplane also mentioned).
Configuration management: Ansible.
CI/CD: GitLab CI/CD.
Compute: EC2, Lambda, EKS.
Container engine: Docker.
Secret management: HashiCorp Vault, AWS Secrets Manager, External Secrets Operator.
Database: Aurora/RDS with Postgres.
SSO/user management: OIDC, SAML, Okta (and related patterns).
Shell scripting.
Security: IAM roles/policies, KMS, CloudTrail.
Networking: VPC, VPCe, Route 53.
Logging/metrics: Datadog, OpenSearch.
Kubernetes variants mentioned: RKE2, K3S, EKS.
Programming: Go (GoLang required); Python is a plus.
Secret/identity UX components: Cognito and Organizations.

Nice to Have

Experience with FedRAMP, CC SRG, NIST 800-53, and/or ATO (Authority to Operate) processes.
Experience using Claude Code or other AI-enabled development tooling.
MS in Computer Science.
Bachelors in Computer Science or STEM (or equivalent).

Location & Travel

Fully remote.
Up to ~5% travel may be required.
Job-related travel expenses are reviewed and require manager approval.

About Horizon3

Horizon3 is a company building and operating cloud-native product infrastructure, including secure platforms deployed into federal environments. The role emphasizes scalable, resilient infrastructure and developer enablement across cloud and Kubernetes tooling.

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