Senior Infrastructure Engineer, AWS

Who we are

Our mission at Capacity is to help teams do their best work through our AI-powered support automation platform. Capacity provides everything you need to automate support and business processes in one powerful omni-channel platform.

We believe that each individual voice, perspective and background brings inherent value to enhance our product, serve our customers and generate more ideas to solve complex problems. By continuing to hire talented, driven and humble teammates, we have the opportunity to see Capacity become a premier brand enterprise SaaS platform.

Capacity has raised over $100 millio n dollars from over 150 investors, giving us the opportunity to make ambitious investments in our team and big bets on our future. Our total addressable market is enormous. Any company that wants to grow revenue, reduce costs, and improve customer and employee satisfaction is an opportunity for Capacity to shine.

You’ll be the senior hands-on engineer for the cloud foundation everything else at Capacity runs on. That means building and evolving our AWS platform, operating the Kubernetes clusters our services run on, authoring the infrastructure as code that provisions and governs our environments, designing the network architecture, and keeping cloud costs under control as we scale across acquired platforms.

You’ll report to the Manager, Infrastructure and set the technical bar for how infrastructure is defined, reviewed, and versioned. You own the "what exists" layer; you partner with Dev Ops at the boundary where your IaC gets executed, and with SRE where your platform is observed and kept reliable. As the senior IC on the team, you’ll also mentor other infrastructure engineers and lead the design work on our larger platform initiatives.

• 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 Dev Ops 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

• 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 Git Ops deployment tooling (ArgoCD preferred) and CI/CD in Git Hub 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
• AWS certifications (e.g. Solutions Architect, Sys Ops Administrator) are a big plus
• Experience supporting compliance programs…