Chimbu Chinnadurai
Senior Cloud Architect II
☸️ Battle-tested Kubernetes Operator 🤫
I've probably debugged a Kubernetes issue in more time zones than I care to count. Based in London, I help engineering teams across EMEA get their clusters to behave — and actually understand why they misbehaved in the first place.
I write, speak, and guest on podcasts about all things cloud-native. Away from the terminal: I enjoy cooking almost as much as simplifying overly complex systems.
- Kubernetes
- GCP
- AWS
- Kubestronaut
- Cloud Native
- Networking
- AI
- DevOps
- FinOps
My Certifications
AWS Certified Advanced Networking – Specialty
AWS (last renewed/obtained: Jan 11, 2020)
Renewable as of January 11, 2023
CNCF Certified Kubernetes Administrator (CKA)
CNCF (last renewed/obtained: Feb 2, 2026)
Expires Feb 2, 2028
CNCF Certified Kubernetes Application Developer (CKAD)
CNCF (last renewed/obtained: Feb 9, 2026)
Expires Feb 9, 2028
CNCF Certified Kubernetes Security Specialist (CKS)
CNCF (last renewed/obtained: Mar 16, 2025)
Expires Mar 16, 2027
CNCF Kubernetes and Cloud Native Associate
CNCF (last renewed/obtained: Apr 14, 2024)
Expires Apr 14, 2027
CNCF Kubernetes and Cloud Security Associate (KCSA)
CNCF (last renewed/obtained: Apr 23, 2024)
Expires Apr 23, 2027
CNCF Kubestronaut
CNCF (last renewed/obtained: Apr 29, 2024)
Expires Dec 31, 2034
CNCF Prometheus Certified Associate (PCA)
CNCF (last renewed/obtained: Oct 4, 2022)
Renewable as of October 4, 2025
Tetrate Certified Istio Administrator
CNCF (last renewed/obtained: Nov 9, 2022)
Renewable as of November 8, 2025
Google Cloud Authorized Trainer
Google (last renewed/obtained: Oct 25, 2022)
Expires Dec 31, 2049
Google Cloud Professional Cloud Architect
Google (last renewed/obtained: Dec 30, 2025)
Expires Dec 30, 2027
Google Cloud Professional Cloud DevOps Engineer
Google (last renewed/obtained: Jan 22, 2026)
Expires Jan 22, 2028
Google Cloud Professional Cloud Network Engineer
Google (last renewed/obtained: Jun 1, 2026)
Expires Jun 1, 2028
Google Cloud Professional Cloud Security Engineer
Google (last renewed/obtained: Mar 11, 2024)
Renewable as of April 1, 2026
Hashicorp Certified Terraform Associate
Hashicorp (last renewed/obtained: Aug 21, 2023)
Renewable as of August 21, 2025
Hashicorp Certified Vault Associate
Hashicorp (last renewed/obtained: Feb 10, 2023)
Renewable as of February 10, 2025
Hashicorp Certified Vault Operations Professional
Hashicorp (last renewed/obtained: Feb 10, 2023)
Expires Dec 31, 2050
Other Certificate
Other (last renewed/obtained: Mar 6, 2024)
Expires Mar 6, 2027
What my customers say
The assistance provided was excellent, clear, helpful, and timely. Thank you!
belvo.com · May 2026
What I'm writing
GKE Active Buffer: Eliminate Node Provisioning Delays
GKE's new Active Buffer feature eliminates node provisioning delays by maintaining warm capacity, reducing scale-out latency from minutes to seconds.
Kubernetes DRA GPU Scheduling: End Node Hunting for AI Workloads
Kubernetes DRA eliminates manual GPU node hunting by introducing intelligent, request-based allocation for complex AI workloads with mixed hardware requirements.
GKE Native Support for Custom Metrics: Smarter Autoscaling Beyond CPU and Memory
Modern cloud-native applications rarely scale perfectly using CPU or memory metrics alone. Many workloads are driven by signals like…
What I've open-sourced
- 62
ChimbuChinnadurai/gcp-keda-gke-event-driven-autoscaling-demo
Built after explaining KEDA one too many times in customer calls.
- 5
ChimbuChinnadurai/gke-gcp-grpc-gateway-api-with-istio
gRPC server streaming service running on GKE with istio sidecar
- 0
ChimbuChinnadurai/terraform-aws-gcp-multicloud
Because 'multi-cloud' sounds great in boardrooms but gets chaotic the second routing enters the chat.
- 4
ChimbuChinnadurai/trading212-ISA-portfolio-tracker.git
A full-featured web application that fetches your Shares ISA positions from the Trading212 API and displays them in a rich, interactive dashboard.
- 11
doitintl/aws-eks-sample-templates
Templates for spinning up EKS Lens via Helm, minus the configuration headaches.
- 1
ChimbuChinnadurai/gitlab-oidc-with-gcp-workload-identity-federation
The secure, passwordless blueprint for authenticating GitLab CI/CD pipelines with GCP using WIP
Webinars I've hosted
Istio Ambient Mesh GA: Sidecar-less Service Mesh on Kubernetes
Top Kubernetes Updates of 2024: Gateway API, Pod Resizing, and More
Scaling Kubernetes Workloads with KEDA Event-Driven Autoscaling
Customers I've helped
PlayHQ Optimizes Multi-Tenant Kubernetes Costs
“Every customer has unique usage patterns. Manual resource optimization simply didn't scale—we needed automation to ensure every customer, regardless of size, had right-sized infrastructure without consuming our team's capacity.”
— Brad Quinn, Lead Platform Engineer, PlayHQ
Optimove cuts execution times by up to 60%
“We are thrilled with DoiT International's expertise to migrate Optimove to Google Cloud with ease and efficiency. Their expert guidance and seamless migration allowed us to scale our services effortlessly and focus on what we do best – delivering emotionally intelligent marketing interactions.”
— Amir Gabay, VP of Technical Operations
Talks I've given
Unlock Powerful Progressive Delivery with Gateway API and Argo rollouts
K8SUG UK Meetup · London, UK · Aug 28, 2024
Simplified and Cost-Efficient GKE Node Management with NAP
PerfectScale · Remote · May 22, 2025
ILT - Google Kubernetes Engine(GKE)
Google Cloud (Authorized Trainer) · Jan 1, 2025
ILT - Google Cloud Fundamentals
Google Cloud (Authorized Trainer) · Feb 1, 2024
Come work with me
Open roles I'd love to refer you for
If it's running in production, it deserves to be understood — not just monitored.
DoiT Cloud Intelligence™
Delivering the true promise of the cloud
Others surface recommendations. Cloud Intelligence™ makes them happen. Closed-loop optimization with Forward Deployed Engineers embedded.
Commitments
Auto-cover with Savings Plans
Kubernetes
Right-size pods from usage
Spot
Shift to spot safely
Data Lakes
Tune Snowflake & BigQuery
month-to-date
$56,500end-of-month
$128,200last 12 weeks
Connect with the tools used by your teams
All clouds. All SaaS.
Fast-growing companies run on Cloud Intelligence™
Savings on Kubernetes
Audited Savings
“PerfectScale gave us what dashboards and meetings never could: a safe, automated way to reduce Kubernetes waste without risking uptime. We now treat optimization as governance, not guesswork.””
Thomas Comtet
Senior Staff Engineer, SNCF
Field Experts Across Every Time Zone
DoiT experts across regions and specialties, helping teams solve cloud challenges worldwide.
- UTC-86 FDEsAWS Core Services×3AWS DevOps×2AWS Networking×2
+1
- UTC-75 FDEsAWS×2Networking×2AI×1
- UTC-66 FDEsAI×1Aurora×1AWS×1
+1
- UTC-525 FDEsAWS Core Services×5AWS DevOps×5AWS Security and Identity×5
+20
- UTC10 FDEsAWS×3AI×2AWS Core Services×2
+5
- UTC+121 FDEsAWS×3BigQuery×3RDS×3
+16
- UTC+213 FDEsAWS Core Services×4AWS Networking×4AWS Serverless×4
+8
- UTC+82 FDEsAgentCore×1Agentic AI×1Aurora×1
- UTC+92 FDEsAWS Core Services×2AWS DevOps×1AWS Networking×1
- UTC+102 FDEsAWS Kubernetes×1AWS Serverless×1Google Cloud DevOps×1
- UTC+114 FDEsAWS Databases×2AWS×1AWS AI/ML×1
From the Field
Cloud Engineering Beyond the Happy Path
Talks, insights, and signals for engineers navigating alerts, scaling pain, and platform complexity.
Cloud Masters
Cloud Masters distills patterns from 4,500+ customer engagements into short, tactical episodes for practitioners.
Applied FinOps Show
Field notes from FinOps practitioners on engineering pushback, stalled savings, and allocation models that break under real multicloud workloads.
AI Signal Daily
Daily AI signal, minus the launch spam — curated for cloud and AI practitioners at DoiT.
Cloud Intelligence™ Metrics
Live and unfiltered — right now, not last quarter.
What customers are saying
Últimamente he tenido contacto con el soporte de Doit de forma mas directa, la verdad me agrada muchísimo como han realizado los seguimientos de nuestros tickets Por ahora no tengo quejas, fuera de soporte de este ticket, nos han dado mas soporte en otras oportunidades y nos han capacitado en otras cosas, la verdad estoy super agradecida con ustedes <3
Today
Fantastic and prompt response from doit as always, even with impossible requests from us :) thank you
Today
The google meet call format was great to get this resolved. Houssem really focussed on seeing it through end-to-end and trying everything. He was honest and helpful. Ultimately we found a workaround to our cloud sql instance being stuck and not allowing any configuration changes, something that usually requires proper paid (at least $1k for us) google support. The fix was to switch the instance to be single-zone, do the config change and then switch it back to high availability.
Today
Fast and knowledgable support
Today
Professional, swift and very polite support Thank you very much for quickly solving the issue I needed help with
Today
I use Homebrew in a personal and professional basis.
Today
Quick and prompt response, in this case we had already taken the suggested steps, thanks!
Today
Clear explanations that give us a good head start.
Today
Joseph is excellent in clariying quesitons and understanding our concern with lot of patience.
Today
thanks for the quick answer
Today
thank you for your help
Today
Brian was very responsive and gave us to the point information on important business concerns. Thank you very much!
Today
Netanel investigated and confirmed that this is likely caused by CloudTrail. I found a similar post by someone within the last 24 hours pointing to CloudTrail.
Today
James helped answer my questions and reached out to AWS to confirm that active connections would not break during this process.
Today
It was an awesome interaction. All of the queries were being answered.
Today
Answer very clear
Today
Colette helped out and resolved our issue this solved a problem that could have had us running circles!
Today
Chabane was very diligent when resolving my case. They checked my aws account in depth and confirmed my mitigation was adequate while investigating an issue related to Fargate in the AZ where my ECS services run. Thanks!
Today
Diego gave the proper instructions and we could successfully proceed with his guidance
Today
Wayman reviewed my code and provided ideas to help improve the process.
Today
Your cloud infrastructure, always at its best
Optimization, automation, expertise. In one platform