Platform Engineer

Summary

Join Onebrief's Platform team as a Platform Engineer and build, scale, and secure the foundation of Onebrief's COTS application across various government environments. This strategic role involves partnering with DevOps, Site Reliability, and application engineers to ensure fast, reliable delivery while adhering to stringent DoD requirements. You will own the backbone of Onebrief's COTS deployments, automating, securing, and scaling the platform. Responsibilities include designing and managing cloud and on-prem environments, designing and evolving CI/CD pipelines, upholding reliability, security, and compliance, operating and optimizing the platform footprint, and supporting the team through documentation and mentorship. The ideal candidate possesses 5+ years of experience in Platform, DevOps, or Site Reliability Engineering, along with expertise in infrastructure as code, containers and orchestration, CI/CD, scripting, cloud and on-prem environments, and observability. This is a remote-first position, ideally located near military hubs.

Requirements

• Experience & collaboration
• 5+ years in Platform, DevOps, or Site Reliability Engineering with an infrastructure and operations focus
• Proven partner to DevOps/SRE and application teams; collaborates well across functions and shares context openly
• Clear, concise writing; strong documentation habits and async communication
• Technical expertise
• Infrastructure as Code: Terraform (or CloudFormation), Ansible
• Containers and orchestration: Docker; Kubernetes design, deployment, and operations
• CI/CD: experience building and maintaining pipelines (GitLab CI/CD, Jenkins, GitHub Actions)
• Scripting: proficiency with at least one of Python, Go, or Bash
• Cloud and on-prem: AWS, Azure, or Google Cloud; familiarity with on-prem virtualization
• Observability: Prometheus, Grafana, ELK stack, or Datadog
• Networking fundamentals: core protocols and secure configurations
• Eligibility for a Top Secret clearance. U.S. citizenship required

Responsibilities

• Build and automate the platform
• Design, provision, and manage cloud and on-prem environments with Terraform and Ansible; operate secure, resilient Kubernetes clusters for multi-level deployments
• Designing and evolving CI/CD
• Reduce lead time and maintain strict gates and environment parity by improving pipelines in GitLab CI/CD, Jenkins, and GitHub Actions
• Upholding reliability, security, and compliance
• Partner with SREs to implement monitoring, logging, and alerting (Prometheus, Grafana, ELK/Datadog); embed RMF and STIG controls into automation and day-to-day operations
• Operating and optimizing our footprint
• Manage AWS/Azure/GCP resources and on-prem networks. Balance cost, performance, and security while unblocking product teams
• Supporting the team, documenting, and mentoring
• Triage and resolve complex platform issues; write clear docs for architectures and runbooks; share context and mentor teammates

Preferred Qualifications

• Experience in DoD environments and compliance frameworks (RMF, STIGs, ICD 503)
• GitOps practices and toolchains
• Security-minded design for sensitive environments
• Service mesh exposure (Istio, Linkerd)
• Relevant certifications (e.g., AWS DevOps Engineer, CKA/CKAD)
• Strong interpersonal skills; comfortable collaborating across diverse teams