Software engineering studio · Bangkok, Thailand
insert into designs, engineers and ships production systems for government agencies, manufacturers and growing brands. Back-office platforms, mobile and IoT apps, integrations and websites, tested end to end and handed over with documentation your team can maintain.
Founded by Wisa JerdjanorendeeINSERT INTOyour_businessVALUES('software that works');
Selected clients
Solutions
Most projects start with a familiar problem. Here is what we build for each one, the technology behind it, and where we have already delivered it.
“Approvals and purchasing still run on paper, chat and spreadsheets.”
Requests, tiered approvals, documents and dashboards in one system, with Thai-language PDFs, email notifications, audit trails and Excel exports.
Delivered in P2P PlatformCommerce back office
“We need a proper system, but procuring servers takes a year.”
Web applications that run on the Google Workspace you already own. No servers to buy, no hosting fees, and the data stays in your own Sheets and Drive.
Delivered in SAISInventory system
“Two systems hold the same data, so our staff key it in twice.”
Middleware that keeps databases, cameras and third-party APIs in sync on a schedule, with schema mapping, duplicate checks and logs you can audit.
Delivered in Plate-camera sync
“We have a device or a sensor, and need an app built around it.”
Flutter apps for iOS and Android that talk to hardware over Bluetooth LE, compute insights on the device, and add AI features grounded in real data.
Delivered in Smart insole coachVocabBoost
“Our products and pricing are too complex for an off-the-shelf store.”
Custom storefronts with server-side pricing, payment gateways and admin tools, plus fast bilingual websites that turn visitors into enquiries.
Delivered in Build-to-order commerceThe Nine One D Plus
“Every release breaks something, and users find it before we do.”
Test cases written from your requirements, automated with Playwright and run on every release, with a screenshot as evidence for each case.
Delivered in Back-office test automationP2P Platform
Go · TypeScript · Dart · Python · PHP · C#
Next.js · React · Tailwind CSS · Vite
Flutter · Bluetooth LE
PostgreSQL · MySQL · Supabase · Google Sheets
Docker · Google Cloud Run · Caddy · Gotenberg
Playwright · Vitest · Go test · Flutter golden tests
LLM integration · Gemini API
Google Apps Script · Sheets · Drive · clasp
Selected work
Each project shows the challenge, what we built and the engineering behind it. Screenshots come from running builds and use test data. Interfaces are in Thai for Thai users.
Manufacturing · Procure-to-Pay
One controlled path from purchase request to a supplier-ready purchase order, for a footwear-materials manufacturer.
Dashboard: pending approvals, PR/PO status and spend
The business needed approvals routed by amount, separation of duties, and proof that every supplier's certifications were current before an order went out.
A Procure-to-Pay platform where requisitions move through approval tiers, approved lines become purchase orders, and Thai PDFs reach suppliers by email in one step.
Government · Knowledge management
A knowledge base and case-recording system for the Senate's committee secretariat, built on Google Workspace.
Mission topics, each linked to its legal basis
The secretariat needed one place for 27 recurring mission topics, each with its legal basis, documents and meeting records, without procuring new servers.
A web application on the agency's own Google Workspace. Navigation lives as data in a sheet, so staff add topics without a developer, and documents stay in the agency's Drive.
Manufacturing · Corporate website
A bilingual website for a shoe manufacturer with more than 20 years of OEM experience.
Products and services
An experienced OEM factory needed to reach buyers in both Thai and English, explain a long production chain clearly, and turn visits into sales enquiries.
A fast bilingual site that presents the full OEM chain from design and molds to assembly and testing, with articles for search and a contact form delivered to the sales inbox.
Under NDA
Some engagements are delivered with partners under non-disclosure agreements. For these we leave out client names, product names and screens, and show the problem, the solution and the architecture instead.
Health & sports tech · IoT · Mobile
A mobile app that turns pressure-sensing insoles into real-time running insight, with an AI coach that answers from the runner's own data.
Client and product name withheld
HardwarePressure insolesLeft and right sensor pads streaming over Bluetooth LEMobile appFlutterLive pressure heatmap, cadence, contact time and left/right balanceOn deviceLocal historyDaily sessions stored on the phone and available offlineAICoachStreaming LLM answers grounded in the same numbers shown on screenRaw readings from two insoles had to become insight a runner understands in real time, and the AI coach must never invent metrics the hardware cannot measure.
A Flutter app that pairs with both insoles, computes gait metrics on the device, keeps history offline, and streams AI answers built only from measured data.
Retail · E-commerce
An online store where customers configure their own product and the server prices every build.
Client and brand withheld
FrontendStorefront & back officeNext.js: configurator, cart and checkout; products, coupons, customers and ordersAPIGo, hexagonal + DDDDomain rules and server-side pricing, with no ORM and no web frameworkDataPostgreSQL 16Versioned migrations and seed dataPaymentsPayment gatewayCard payments confirmed by webhookEvery order is a unique configuration, so prices could never be trusted to the browser, and the business needed a full back office from launch day.
A Go backend that prices every configuration on the server, a Next.js storefront and admin, gateway payments, and container deployment to Google Cloud Run.
Service network · Quality engineering
182 test cases turned into an automated regression suite for the executive back office of a multi-branch car-care network.
Client and system name withheld
InputRequirementsBusiness documents for each back-office featureTest design182 test casesSteps, preconditions and expected results, traceable to each requirementAutomationPlaywrightPage objects and a shared signed-in sessionEvidenceHTML reportPass/fail with a screenshot attached to every caseExecutives decide from dashboards, charts and Excel exports. Every release had to prove those numbers still matched across sales, branches, machines and promotions.
We wrote the test cases from the requirement documents, automated them with Playwright, and delivered a suite the team re-runs on every release.
Integrations, mobile learning, architecture and R&D.
Government · Systems integration
Approved vehicles and owners flow from an agency's parking registration system into Dahua DSS Pro automatically, so staff no longer key the same data into two systems.
SourceParking registryPHP · MySQL · 3 tablesSyncMiddlewareSchema merge, duplicate checks, scheduled runsTargetDahua DSS ProVehicle database and gate camerasEducation · Mobile & admin web
A TOEIC vocabulary and exam-practice app with part-by-part drills, full mock tests and vocabulary games, plus a separate admin web app for content and users.
Answer explanations are generated with Gemini, words are read aloud with text-to-speech, and progress is charted over time.
About · Vision
In SQL, INSERT INTO is the statement that writes a new record into a system of record. That is our job: we take work that lives on paper, in spreadsheets and in people's heads, and commit it to a system built to last.
Founder
Founder & Principal Engineer
Wisa founded insert into to bring bank-grade engineering to government agencies and growing businesses that need dependable systems but don't have a full platform team of their own.
Wisa has been building software since 2017 and has spent more than six years in Thai banking. As Technical Lead at Thai Credit Bank, Wisa leads backend delivery for open banking and mobile banking with teams of 10 to 15 engineers, covering accounts, authentication, OTP, transfers, payments and partner integrations.
The same standards carry into every insert into project: secure APIs, audit trails, automated tests, and documentation your own team can maintain.
Leads architecture and delivery on every client engagement.
Backend delivery for open banking, mobile banking and partner services. Sets secure engineering standards for OAuth/JWT, RBAC, encryption and audit logging, and built an internal LLM workflow for production incident analysis.
Backend APIs and financial service logic for high-volume banking systems processing more than 1,000,000 requests.
RPA and web applications for internal business operations, built with PHP, C#, React and Angular.
Frontend and web application development for business systems in C#.
Approach
You see working software at every stage of the project, well before launch day.
CONSTRAINT clean_architectureHexagonal architecture keeps business rules independent of databases and frameworks, so technology can change without a rewrite.
CONSTRAINT verified_by_runningUnit, end-to-end and golden tests, plus a run in real containers, before anything is called done.
CONSTRAINT secure_by_defaultMinimal, audited dependencies. Secrets never committed. Strong password hashing and audit trails as standard.
CONSTRAINT documented_handoverAPI specifications, user guides, deployment runbooks and QA checklists ship with the source code.
Interview users, collect today's forms and spreadsheets, and agree measurable acceptance criteria.
Screens, data model and API contract, reviewed with you while changes are still cheap.
Short increments you can click through, each with its own unit tests.
End-to-end tests, user acceptance testing and a QA checklist signed off item by item.
Deployed to your servers or cloud, with source, guides and runbooks handed over.
Support, improvements from real usage, and new features on the same foundations.
Start a project
Message us on LINE and tell us about it. We reply with a suggested approach and an initial timeline.