Client Type
Technology-driven organization
Sector
Technology
Engagement Model

Challenge

The client was an emerging technology platform with aggressive growth targets and a fast-approaching production deadline. The internal engineering team had the roadmap and the architectural vision but a critical capacity gap in senior cloud engineers. Hiring through traditional channels would not close the gap before the deadline.

The work itself required deep AWS experience, infrastructure as code discipline, and the kind of production sense that comes from having operated systems through real failure modes. Junior contractors were not going to be productive fast enough. The team needed senior engineers who could ramp in days, not months, and contribute production-ready work inside the existing engineering workflow.

What We Did

We embedded senior cloud engineers directly into the client's team. Our engineers learned the existing AWS environment, joined standups, contributed to code review, and started shipping production work inside the first two weeks.

The substantive work focused on automating mission-critical infrastructure delivery through Terraform-based infrastructure as code. We rebuilt environment provisioning end-to-end so new environments could be stood up reproducibly. CI/CD pipelines tied infrastructure changes to the same review and deployment discipline as application code. Observability and operational visibility were brought up to a state the team could rely on through the deadline and beyond.

Throughout, our engineers operated as part of the client's team, not as a separate vendor. Decisions went through the team's normal process. Documentation was written for the team to own.

Architecture (sanitized)

Multi-environment AWS architecture with Terraform IaC pipeline Sanitized AWS reference architecture. Internal users connect through an Application Load Balancer with WAF and API Gateway. Inside AWS, three environments (dev, stage, prod) each run ECS on Fargate, RDS, and S3. CloudWatch, X-Ray, and Secrets Manager are shared across environments. A Terraform IaC pipeline runs source review, plan, and apply, operated by a combined team of client engineers and embedded Cirrus Lake senior engineers in a shared review flow. Internal users Application Load Balancer + WAF + API Gateway TLS termination · authentication · rate limiting AWS MULTI-ACCOUNT · TERRAFORM-MANAGED dev stage prod ECS · Fargate Service tasks ECS · Fargate Service tasks ECS · Fargate Service tasks RDS Encrypted at rest RDS Encrypted at rest RDS Encrypted at rest S3 Versioned · KMS S3 Versioned · KMS S3 Versioned · KMS SHARED & OBSERVABILITY CloudWatch Metrics · logs · alarms X-Ray Distributed tracing Secrets Manager Rotated credentials Shared: VPC peering · IAM boundaries · separate AWS accounts per environment Cross-environment promotion through Terraform module versioning TERRAFORM IAC PIPELINE Source repo PR review terraform plan terraform apply ENGINEERING TEAM Client engineers + Cirrus Lake embedded senior engineers Operating in shared review and approval flow
Sanitized AWS multi-environment reference architecture. Production version omits client-identifying naming, exact account topology, and specific service-account labels.

Results

  • Hit the production deadline by embedding senior engineers immediately and shipping production-ready work from week one.
  • Automated infrastructure delivery end-to-end through IaC with industry-standard practices, eliminating console-driven configuration and making environments reproducible.
  • Improved performance, uptime, and operational visibility across the platform, with monitoring and alerting that surfaced issues before they became incidents.
  • Left the team in a stronger position than before the engagement, with documentation, runbooks, and infrastructure patterns the internal team could extend.

Technology Stack

Cloud AWS
Infrastructure as Code Terraform
Compute ECS, Lambda, EC2 where appropriate
CI/CD Automated build, test, deploy with environment promotion
Observability CloudWatch metrics, structured logging, distributed tracing
Security IAM hardening, least-privilege, secrets management
Need senior engineers, fast?

Talk to us about your team's gap.

If you have a deadline coming and a capability or capacity gap on the team, embedded senior engineers are usually the fastest path. We'll help you scope the role, the timeline, and the engagement structure.