onecity — boot
welcome to onecity
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we build what runs behind the screen // built in colombo · runs everywhere

we build it.we ship it.we run it.

From a blank page to a live product — fast. We design it, engineer it, and run it ourselves. No hand-offs. No half-finished. No excuses.

// onecity enginebuilding
0%
7projects
3in development
compiling product
// live consoletype a command ↵
visitor@onecity — zsh
designengineeringwebsoftwareplatformsautomationoperations designengineeringwebsoftwareplatformsautomationoperations
// what we do

Four things,
done end-to-end.

04 / capabilities
01

Product & Design

We find the real need before drawing a screen, then make the complex feel obvious.

02

Engineering

Fast, reliable web and app builds — written to last and easy to grow.

03

Platforms & Automation

Real-time systems and automation engines that work every second.

04

Operations

We host, monitor, and keep improving everything we put our name on.

// how we ship

From need
to live.

process
01
Understand
We map the real problem and the people behind it before a line of code is written.
02
Design
Prototype fast, decide faster. The simplest thing that solves it well.
03
Build
Engineered properly — clean, fast, made to grow. Shipped in days and weeks.
04
Run
We deploy, monitor, and keep improving. Launch is the start, not the finish.
// projects

Built and run
by onecity.

live / production
CoreScanly

iPhone verification for Sri Lanka. Check any IMEI in seconds — blacklist, carrier-lock, and stolen-device status — with instant PDF reports and a full shop toolkit.

SaaSConsumer TrustiOSPayments
Live
typeSaaS / Web
marketSri Lanka
year2026
visitcorescanly ↗
NEZSIG

A crypto signals and automated-trading platform. Real-time signals plus a Binance Futures auto-trade engine and a live dashboard. Running in production.

TradingAutomationReal-timePlatform
Production
typePlatform
engineAuto-trade
statusLive
visitnezsig.com ↗
GridOps

An operations control system — live dashboards, smart workflows, and real-time alerts for teams that run on data. One screen, full control.

SystemReal-timeDashboardWorkflows
In development
typeControl system
statusBuilding
year2026
Vault

A secure records & document platform with audit trails and role-based access. Built for businesses that simply can't afford to lose track of anything.

PlatformSecurityRecordsAudit
In development
typeSecure platform
statusBuilding
year2026
Mandhakini

An astrology platform that builds a full personal horoscope in under a minute. Powered by precise NASA JPL planetary data, every reading runs 25+ pages and 3,000+ words — a complete, deeply detailed chart, instantly.

AstrologyNASA JPLPlatformGenerative
In development
typeAstrology platform
dataNASA JPL
output25+ pages
year2026
// the studio language

Built on a
shared system.

marks / identity
onecity
jobcity
nezsig
NodeScan
// how it's built

A serious
toolkit.

stack / tools
onecity@studio ~ % stack --list --all
› loading languages, frameworks & tools ...
TypeScriptJavaScriptPythonReactNext.jsVueNode.jsTailwindPostgreSQLSupabaseRedisDockerRailwayVercelREST APIsWebSocketsStripe / PayHereAutomationFigma
19 tools loaded · ready to build
// the studio

How we
think.

principles
// 01

Small on purpose.

Fewer products, done right. Two things properly beats ten things halfway.

// 02

We run what we build.

No hand-off, no disappearing act. We stay responsible for our products.

// 03

Fast, not sloppy.

Speed from clear thinking and good tools — never from cutting corners.

// 04

Made in Colombo.

Built locally, built for everywhere. Sri Lankan studio, global standard.

Coming soon.
We build what runs behind the screen.
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