Raffael Sahli
Principal Engineer at Doodle
Zurich, Zurich, Switzerland
Summary
👤
Senior🎓
Top SchoolRaffael Sahli is a Principal Engineer based in Zurich with 11 years of hands-on experience designing and operating cloud-native infrastructure at scale, primarily focused on Kubernetes, Go, and DevOps tooling. He has led SRE teams and driven platform transformations—replacing legacy CI/CD, VPN, and Terraform setups with GitOps, self-hosted runners, tailscale/headscale alternatives, and Crossplane-managed resources—while cutting cloud spend and operational toil. A prolific creator of Kubernetes controllers and automation (many open-source) he often replaces manual runbooks with controllers that enable safe, repeatable rollouts and policy-driven cluster hardening. Comfortable across the stack, he blends systems engineering and software development to ship observability, security, and automation improvements that materially reduce manual work. Notably, he has migrated on-prem and vSphere workloads to bare-metal Kubernetes and implemented programmatic dashboards and distributed tracing to elevate platform reliability.
10 years of coding experience
12 years of employment as a software developer
Informatik Systemtechnik EFZ, Informatik Systemtechnik EFZ at Berufsbildungszentrum UsterHF IT Service Engineer, HF IT Service Engineer at TBZ Technische Berufsschule Zürich
Stackoverflow
555reputation
36kreached
4answers
10questions
Github Skills (200)
data-stream10
opensearch10
testing10
proxy10
exporter10
scheduling10
cubing10
influxdb10
k8s10
operator10
document-management10
balloon10
windows-app10
llm-inference10
lucee10
Programming languages (18)
Github contributions (5)
DoodleScheduling/db-controller
Feb 2021 - Jul 2022
Kubernetes Controller for managing databases and users
Contributions:4 reviews, 94 commits, 28 PRs in 1 year 5 months
controllerdatabasesk8skubernetesdatabase
DoodleScheduling/prometheus-patch-controller
Mar 2022 - Mar 2024
Apply kubernetes resource patches based on prometheus rule evaluation
Contributions:4 reviews, 70 PRs, 89 pushes in 1 year 11 months
kubernetes-resourceruleevaluationjsonpatchapply
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