Software engineering studio · Thailand

Built to hold course.

Mobile apps, LINE OA, internal systems and AI, built to the security standard of a financial platform.

The engineer you meet is the engineer who builds it.

or start with a 30-minute call, no charge →

Cross-section of a hull. Above the red waterline: the screens people see. Below it: APIs, data, security, tests and documentation. BODY PLAN KN · 01 · 2026.10 N FIXED SCOPE BL UI · LINE · WEB API · INTEGRATIONDATA · PDPASECURITY · AUDITTESTS · CIDOCS · HANDOVER 2 4 6 8 10 WL 0 2 4 M

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The strength of a system lives below the waterline.

Screens are what people see. What decides whether a system survives is underneath: the architecture, the security, the tests, the documentation, and the person who stays until it works. Keel North builds that part first.

Fig. 02 · The system in sectionBelow the waterline
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Hold course

A paid Blueprint before every build. Fixed scope, a written update every week, milestone payments, dates we hit.

02

Below the waterline

Security, PDPA, audit logs, tests and clean architecture come as standard, not as extras.

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Yours to keep

Code in your repository from day one, a documented handover, and a 12-month bug-fix warranty.

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Packages

Every build starts with a Blueprint and ends with a handover your team can run without us. Care keeps it running after launch.

All packages and prices →

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Selected work

Client names are withheld. More detail is available under NDA.

US financial technology · name withheld

A financial platform, end to end

A financial platform for a US company our founder started and led, hands-on, end to end: iOS and Android apps, backend, web and staff consoles, identity verification, sanctions screening and transaction monitoring, and an AI support assistant.

FlutterGoKYCComplianceSecurityAI assistant

Read the case study →

14,500 automated tests on the mobile app
77% mobile line coverage
The platform drawn as a hull in section. Three threats are drawn as arrows, and each stops at the layer that controls it: account takeover at sign-in, insider misuse at staff permissions, unexplained transfers at the ledger. SECTION A–A · THREAT MODEL BL APP WEB CONSOLE IDENTITY · SIGN-INPERMISSIONS · AUDIT LOGLEDGER · SCREENINGMONITORING WL T1 ACCOUNT TAKEOVER T2 INSIDER MISUSE T3 UNEXPLAINED TRANSFERS STOPPED AT THIS LAYER
Fig. 03 · Threat modelA financial platform, end to end
Portrait of Pinaet Poonsarakhun, founder of Keel North

Pinaet Poonsarakhun (Nate) · Founder and lead engineer

You talk to Nate, not a sales team.

15 years building software, including a payment gateway that has processed about 600 million baht (≈ US$18M) and a financial platform Nate founded and led. Nate scopes your project, writes the code and hands it over.

More about Nate →

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Start with a Blueprint.

Two to three weeks, a fixed build quote at the end, and every document is yours whether or not we build together.

Book a Blueprint →

or start with a 30-minute call, no charge →