Senior Platform Engineer managing AWS, Kubernetes, Terraform, and CI/CD infrastructure at Ledgebrook. Building secure self - service platforms that improve software delivery reliability.
About the role
- GCP Cloud Migration Engineer managing complex lift-and-shift cloud migrations from legacy systems. Collaborating with global teams to utilize modern GCP-native infrastructure strategies.
Responsibilities
- Navigate and remediate a complex brownfield estate featuring end-of-life operating systems (Windows Server 2008, older Linux), hardcoded IP addresses, and undocumented server-to-server dependencies.
- Redesign and migrate legacy on-premises load balancing architecture to GCP Cloud Load Balancing (Internal/External models) with zero downtime.
- Write, maintain, and deploy infrastructure strictly using Terraform within an existing codebase and GitHub Actions CI/CD pipelines.
- Operate and troubleshoot pipelines using Workload Identity Federation (WIF) and OIDC token exchange for keyless GCP authentication.
- Ensure all architectural changes strictly adhere to HIPAA and PIPEDA frameworks.
- Manage active IPsec VPN tunnels between on-premises systems, GCP, and various third-party functional sites.
- Leverage AI prompting tools to accelerate current-state understanding, map hidden dependencies, and compress discovery time.
Requirements
- Proven track record of working in complex, undocumented brownfield environments.
- Experience handling end-of-life OS, single Active Directory domains spanning prod/non-prod, and unmapped subnets.
- Ability to make sound judgment calls mid-delivery when discovery reveals infrastructure surprises.
- Deep knowledge of GCP-native architecture: hub-and-spoke VPC, Cloud VPN, hierarchical firewall policies, IAM, and organisation policy management.
- Strong understanding of GCP URL maps, backend service models, split-horizon DNS, path-based routing patterns, and SSL certificate migration.
- Advanced, hands-on Terraform experience (zero click-ops environment).
- Hands-on experience with GitHub Actions, WIF, and keyless authentication (no service account keys allowed).
- Prior experience working in highly regulated environments under HIPAA and/or PIPEDA frameworks.
- Familiarity with Wiz security scanning (branch level), Wiz CSPM monitoring, and CrowdStrike EDR on workloads.
- Ability to deliver high-quality infrastructure solutions under tight, contractually mandated datacenter exit deadlines.
Benefits
- Offers Bonus
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