halcyzhuoCurrent time · WIB
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fast

reliable

accessible

scalable

About · the studio

We turn growing product complexity into software teams can ship, operate, and hand over.

Interfaces, APIs, and infrastructure for the next stage of the product. Systems, not screenshots.

Abstract visual system from the halcyzhuo studio
01 - the studioJakarta / remote
What we build(03)
01

Frontend systems

Fast, accessible interfaces that stay clear under load and in everyday use.

02

Backend & APIs

Typed services and stable contracts for data flows that stay predictable as usage grows.

03

Infrastructure & operations

Deployments, observability, and the operational layer that keeps products healthy after launch.

Work · selected systems

Shipped, not
sketched.

A few systems, the constraints behind them, and what changed after launch.

Architecture Bureau — An editorial showcase for a Medellín architecture practice, with tactile SVG plan reveals and synchronized scroll physics.
Featured project
01 / 102026
Landing page

Architecture Bureau

An editorial showcase for a Medellín architecture practice, with tactile SVG plan reveals and synchronized scroll physics.

OutcomeSVG plan reveals, synced scroll
view all work
Approach · how we work

From problem to product,
with a clear next step.

We find the constraint, build the smallest useful system, and learn from what ships.

01discover

Find the constraint

We align on the outcome, the constraints, and the smallest useful path before code starts.

productarchitectureroadmap
02build

Build the next version

Typed code, real tests, and delivery from day one. Decisions stay easy to review, change, and hand over.

typescripttestsdelivery
03ship

Learn from production

We launch with observability, watch real behavior, and let production decide what comes next.

observabilitymonitoringiteration
Stack · tools in production

The stack
behind the work.

A focused stack chosen for speed, clarity, and production reality.

01Frontend
Next.jsReactTypeScriptTailwind CSSTanStack Query
02Backend
NestJSTypeScriptPrisma ORMREST APISwagger
03Database
PostgreSQLRedisAmazon S3
04Authentication
JWTRefresh TokenOAuth 2.0Argon2idMFA
05Infrastructure
DockerECS FargateCloudFrontRDSRoute53AWS

Journal · notes from production

Journal.

Notes on engineering, performance, and product decisions, written close to the work.

read all notes →
Engineering

When a plain fetch layer beats React Query

A popular dependency is not always the right dependency for the product in front of you.

Jul 3, 2026 · 8 min read→
Performance

How to read a Lighthouse score (and when to ignore it)

Jun 18, 2026 · 6 min read→
Architecture

The architecture that scaled to 60k users without a rewrite

May 29, 2026 · 10 min read→
available for selected projects

Have a product that needs its next version?

Tell us what you're building, where it is getting stuck, and what needs to change. We'll come back with a clear take on scope, architecture, and next steps.

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