I'm Michael — a Cloud & Backend Engineer based in Tokyo. For nearly a decade I've been building, refactoring, and automating the infrastructure that quiet, reliable products depend on.
“Infrastructure should feel like a well-stretched canvas — quiet, ready, and trusted.”
— About
I started writing code in 2014 while at Universitas Indonesia, and somewhere along the way fell in love with what happens beneath the product — the pipelines, the platforms, the quiet primitives that let a team move fast without breaking trust.
Over the past decade I've worn three hats — backend, DevOps, and cloud — at PayPay, Traveloka, and Ajaib. The through-line is simple: take messy, legacy systems and leave them measurably calmer than I found them.
I get extra motivated when something is new — a new cloud, a new tool, a new failure mode. That's where the interesting work lives.
End-user product code through platform building blocks.
AWS, GCP, and Alibaba — provisioning, sizing, refactoring.
Pipelines, secrets, and the operations rituals around them.
Treating infra like a craft, not a task queue.
— Experience
Automating operations and translating engineer pain into shipped tooling at one of Japan's largest payment platforms.
Three-cloud reality (AWS + GCP + Alibaba) for a fast-growing fintech.
Built the IaC foundation product teams rely on, and tutored backend engineers into self-sufficiency.
Shipped product across end-user, affiliation, sourcing, and platform teams — and ran the JIRA that kept it all moving.
Web enhancements for PT Lintasarta and a mobile E-Survey app for the company's field operations.
Internal web tooling for the operations team's daily routine — first taste of building things people actually use.
— Featured Works
Six projects that capture the kind of work I gravitate toward — quiet platforms, deep refactors, and the unglamorous tools that move teams forward.
Designed and rolled out a tagging standard across every cloud account at PayPay, unlocking accurate cost attribution and ownership signals for the whole org.
Two-way workload migrations with zero customer downtime, including data, identity, and observability cutovers.
A curated module library that turned Terraform from “infra team's job” into something every product engineer at Traveloka could use safely.
Jenkins + Ansible + Consul pipeline that spanned AWS, GCP, and Alibaba Cloud, normalised under a single deploy story.
Pattern-driven capacity right-sizing that cut my team's infra spend without touching reliability — paid for itself in the first quarter.
Drove a portfolio of services to meet pre-IPO audit requirements — controls, evidence, and the automation to keep them green afterwards.
— Toolkit
Like any craft, the toolkit matters less than the judgement of when to pick which one — but here's what you'll usually find on my bench.
Good infrastructure is invisible. You only notice it when it breaks — and the goal is for nobody to ever notice.
— Education
Bachelor's degree, Computer Science
Picked up the fundamentals — algorithms, distributed systems, networking — that I'm still drawing on in every infra decision today.
— Contact
I'm currently at PayPay in Tokyo, but always open to a conversation — whether it's a consulting question, a side project, or just to compare notes on Terraform.