Stay Hands-On
Technical leadership remains connected to production systems and real engineering challenges.
Hello, I'm Amirudin Hamzah
I build and lead the platforms behind critical software.
Lead DevOps / SRE / Platform Engineer
Hands-on DevOps, SRE, and Platform Engineering leader with 8+ years of experience across software engineering, cloud infrastructure, Kubernetes, CI/CD, observability, production reliability, and security compliance.
- 7Products
- 15GKE clusters
- ~~50GCP projects
- 100K+K+Users
- 1M+M+Transactions / day
- ~IDR 1BBAnnual cloud savings
About
From writing software to engineering the platform it runs on.
Amirudin Hamzah is a hands-on DevOps, SRE, and Platform Engineering leader with more than 8 years of experience across software development, cloud infrastructure, Kubernetes, CI/CD, observability, reliability engineering, and security compliance.
His career began in software engineering, building backend and full-stack applications using PHP, Node.js, and Go. That software background became a foundation for understanding not only infrastructure, but also the applications and developers that depend on it.
Today, he leads DevOps and SRE engineering at PT Bimasakti Multisinergi, directly reporting to the CTO.
Today, the role combines
- Technical Leadership
- Architecture
- Hands-On Engineering
- Production Reliability
- Business Impact
From code to leadership
- 01Software
- 02Infrastructure
- 03Cloud
- 04Kubernetes
- 05SRE
- 06Leadership
Current Scale
The platform I help operate.
Seven products, ~50 developers, 15 clusters, 100K+ users — the numbers Amirudin’s team carries. Hover the system or use the list; every node explains what it means in practice.
Hover the system, or select a domain
Experience
The evolution of an engineer.
Backend Engineering
Started in software engineering — building backend systems in PHP and learning what production code needs to survive.
Full-Stack Development
Expanded across the stack with Node.js and JavaScript — shipping complete products and taking responsibility for how they ran.
Infrastructure & Compliance
Crossed from code to infrastructure: servers, virtualization, security standards, and compliance audits — ISO/IEC 27001 and PCI-DSS.
DevOps Supervision
Began leading DevOps and SRE at PT Bimasakti Multisinergi — a 5-person team, direct to the CTO, across products and projects.
Cloud Optimization
Drove the platform's cloud transformation and cost program — from on-premises to GCP, from ~IDR 5B to ~IDR 4B annual cloud spend.
AI-Assisted Operations
Turning operational conversations into engineering knowledge: AI-assisted automation, knowledge retrieval, and faster resolution.
Present
System eras
Now — reporting to the CTO
PT Bimasakti Multisinergi
DevOps Supervisor · Aug 2022 – Present
Hands-on technical leader responsible for DevOps, SRE, cloud platform, production infrastructure, observability, reliability, and engineering operations. Lead a 5-person engineering team supporting 7 business products, ~50 developers, ~50 GCP projects, 15 GKE clusters, and hundreds of applications and microservices.
Responsibility layers
- Lead and grow a 5-person DevOps / SRE engineering team.
- Partner with the CTO on platform architecture and infrastructure strategy.
- Serve ~50 developers across 7 product teams as their platform organization.
- Recruit, mentor, and raise the team's operating bar.
Impact
The work, measured.
A platform is only as convincing as the outcomes behind it. Four chapters — spend, transformation, reliability, operations — each one an engineering decision that produced a number the business can feel.
Impact · FinOps
~IDR 1B saved every year.
Annual cloud expenditure reduced from approximately IDR 5 billion to IDR 4 billion — a ~20% reduction sustained through systematic FinOps, not one-off cuts.
~20% reduction · ~IDR 1B annual savings
Context matters: spend reduction came from measured usage, workload placement, commitment planning, and commercial review — not from starving environments of capacity.
- Rightsizing
- Workload consolidation
- Kubernetes clusterization
- Spot VMs
- Committed Use Discounts
- Resource segmentation
- Billing optimization
- Partner negotiation
Impact · Cloud Transformation
From on-premises infrastructure to Google Cloud.
A full platform migration: ~80 VMs and 6 databases out of a hardware-constrained data center, into a containerized, observable, cloud-native operating model.
On-premises
- ~80 VMs
- 6 databases
- Hardware constraints
- Failure risk
Google Cloud
- Containerized workloads
- GKE
- Autoscaling
- Centralized observability
- Cloud-native operations
Organizational platform SLA target
99.9%
Impact · Reliability
Built around business-critical reliability.
Operating against a 99.9% organizational platform SLA target — with a defined tolerance of ~5 minutes of unplanned downtime — across platforms carrying 100K+ users, 500–700 RPS, and 1M+ transactions a day.
- ~5 minDefined unplanned downtime tolerance
- 100K+Users
- 500–700RPS
- 1M+Transactions / day
Reliability is an operating discipline here: SLO thinking, staged rollouts, incident response, and post-incident learning keep the platform inside its tolerance — not a single-number promise.
Impact · AI-Assisted Operations
Turning operational conversations into engineering knowledge.
Engineering operations transformation through AI-assisted automation and knowledge reuse — not an AI product. Operational signals that once lived in chat now flow through an automated pipeline and return as retrievable engineering knowledge.
100%
Manual WhatsApp monitoring eliminated
Engineers no longer watch chat channels for operational signals — the pipeline does.
~90%
Engineering workload focused on technical engineering
The operational loop that consumed attention now runs automatically.
Signal
WhatsAppOperational messagesAutomation
n8nAutomation workflowUnderstanding
Vertex AIUnderstanding & triageState
PostgreSQLStructured state- ResolutionAction taken
Memory
QdrantVector knowledgeReuse
Knowledge RetrievalAnswers for future issuesReuse
Future issuesRetrieved answers short-circuit re-investigation
Those outcomes run on an architecture — explore the stack that carries them.
Architecture
The platform, drawn as layers.
Not a system diagram of a data center — the operating model of a platform: what carries traffic, where workloads run, what holds state, and how every layer reports. Sanitized and conceptual; explore it like a system.
6 conceptual layers · 14 systems — sanitized view, no internals. Hover a system to trace its links.
Where applications and services run: GKE, segmented by workload domain.
Observability
Every layer reports to one place.
Workloads
ApplicationsServicesAPIs
emit
Signals
Metrics→ PrometheusLogs→ ElasticsearchAPM→ APM SystemSecurity→ Wazuh
query
Grafana
route
Channels
WhatsAppSlackTelegram
Skills
Nine disciplines around one center.
Tools rotate; the disciplines they serve are the stable part. This is the working toolkit behind each capability — the stacks I run, not a rating of myself.
Center of gravity
Platform Engineering
01 / 09
Cloud
- Google Cloud Platform
- Compute Engine
- GKE
- Networking
- IAM & Segmentation
- Google Cloud Platform
- Compute Engine
- GKE
- Networking
- IAM & Segmentation
Work
Three cases, one operating model.
Platform-level work, each with its own full case study: what the problem was, how it was engineered, and what measurably changed.
Leadership
Lead from the architecture, not just the meeting room.
Technical leadership shows up in what the platform can do without supervision — in alerts that carry context, in capacity that scales before it pages, in knowledge that outlives a single conversation. Five principles guide how I work.
Build Leverage
Automation, platforms, standards, and knowledge systems should multiply engineering capability.
Reliability Is a Product Feature
Infrastructure exists to enable reliable business outcomes.
Measure Impact
Engineering decisions should improve reliability, delivery speed, scalability, cost efficiency, operational efficiency, and risk reduction.
Bridge Business & Engineering
Translate organizational objectives into technical priorities and architecture.
Foundation
Where the engineering story started.
Universitas Muhammadiyah Sidoarjo
Bachelor of Information Technology
GPA 3.4 · Outstanding Graduate with two national achievements.
SMKN 2 Buduran Sidoarjo
Software Engineering
Vocational secondary — where the engineering story started.
Recognition
2nd Awardee
Two-time national awardee, 2018 – 2019.
UNESA National Web Design Championship
Contact
Let's build somethingreliable.
Open to conversations around Lead DevOps, Senior Cloud Engineering, SRE, Platform Engineering, Cloud Infrastructure, and technical infrastructure leadership.