Senior Infrastructure Engineer, AWS

Capacity

9d • $125,000 - $150,000 • Remote

About The Position

The Senior Infrastructure Engineer will be a hands-on role responsible for building and evolving the cloud foundation at Capacity, primarily on AWS. This includes operating Kubernetes clusters, authoring infrastructure as code, designing network architecture, and managing cloud costs. The role reports to the Manager, Infrastructure and will set the technical direction for infrastructure definition, review, and versioning. The engineer will own the 'what exists' layer, collaborating with DevOps for IaC execution and SRE for platform observation. As a senior individual contributor, they will also mentor other infrastructure engineers and lead design efforts for major platform initiatives.

Requirements

• 5+ years in cloud infrastructure or platform engineering
• Deep hands-on experience with AWS, including networking, compute, storage, and IAM
• Hands-on experience operating Kubernetes in production (EKS preferred), including cluster networking, ingress, Helm, and autoscaling (KEDA, cluster-autoscaler)
• Strong Terraform experience; comfortable owning an IaC codebase at scale
• Experience with GitOps deployment tooling (ArgoCD preferred) and CI/CD in GitHub Actions
• Solid understanding of network architecture: VPCs, segmentation, DNS, CDN, certificates
• Experience with observability tooling and concepts, including metrics, dashboards, monitoring, and alerting (Datadog preferred)
• Experience with cloud cost management and capacity planning
• A track record of leading infrastructure design work and mentoring other engineers
• Strong cross-functional communication; comfortable working across DevOps, Security, and product engineering teams
• Experience in a SaaS engineering environment with containerized workloads

Nice To Haves

• AWS certifications (e.g. Solutions Architect, SysOps Administrator) are a big plus
• Experience supporting compliance programs (SOC 2, ISO 27001, HIPAA, or PCI) is a plus

Responsibilities

• Build and evolve Capacity’s cloud platform on AWS, including compute, storage, database (Aurora / MariaDB on RDS), and networking architecture across a multi-account AWS Organization.
• Provision, operate, and scale Capacity’s Kubernetes platform (EKS): cluster infrastructure, node groups, ingress (AWS ALB), Linkerd service mesh, Helm-based platform components, and autoscaling (KEDA, cluster-autoscaler).
• Author and own infrastructure as code using Terraform and Terragrunt; set and maintain standards for how infrastructure is defined, reviewed, and versioned.
• Design and manage network architecture: VPCs, segmentation, DNS, AWS VPN, and certificate infrastructure.
• Define and enforce environment provisioning standards across dev, staging, and production.
• Lead cloud cost optimization and capacity planning; evaluate architectural tradeoffs with cost in mind.
• Drive design and execution on major platform initiatives (e.g. AWS account consolidation across acquired platforms, network redesign, database migrations, cross-platform standardization).
• Mentor infrastructure engineers through code review, pairing, and design guidance.
• Partner with DevOps at the IaC execution boundary (you write the infrastructure, their pipelines run it).
• Partner with Information Security on cloud security posture, network segmentation, and compliance work supporting SOC 2, ISO 27001, HIPAA, and PCI obligations.
• Author and maintain infrastructure documentation, architecture diagrams, and provisioning standards.

Benefits

• Employer-paid health insurance (for you and your eligible dependents)
• Company Profit Interest Units eligibility
• Unlimited vacation policy
• 401(k) with a company match
• Short term disability insurance
• Group life AD&D insurance
• A supportive, diverse workplace where we prioritize respect for each other and our clients
• A fun and collaborative team culture

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed