Software Development Company · BangkokLayer B · What your team uses every day
Custom Software Development for Thai Businesses
Your team keeps working around a packaged product, or keys the same data into three places, because nothing on the market works the way your business does. That is where a system built for the job is often the cheaper route. You get a scope written with you, continuous progress updates, and software built around how your people actually work. Security and PDPA are in the architecture from the first design session, because retrofitting them later costs more than doing it once.
- Built to Fit
- Scope agreed before development starts
- Engineers Own the Result
- The same team looks after it after go-live
- Security by Design
- PDPA, access control and audit log
01Before and after
Your work lives in too many places
Pricing formulas sit in Excel, approvals in chat, and the software you bought cannot follow your process. A system written around how you work brings it all into one place.
What you use todayConnected 3/3
Your system
What is Custom Software Development?
Custom software development means building a system specifically for one business, from its own requirements, instead of configuring a generic product until it roughly fits. In Thailand that usually means PDPA-compliant data handling, a Thai-language interface, and integration with the platforms customers already use: LINE, PromptPay, and the Thai banking APIs.
02What's included
Everything you need
Scope Agreed First
Scope and timeline are agreed with you before the first line of code, and you get continuous progress updates throughout the build. You know what you are getting and when it arrives.
Compliance-First Architecture
Encryption, access management, and audit logging are designed into the system at the architecture stage rather than added in the week before launch. Projects that handle regulated data follow PDPA, HIPAA, or PCI-DSS patterns as standard.
Continuous Progress Updates
You see how the build is going throughout, and you try working software along the way rather than waiting for the handover. A misunderstanding caught early costs an afternoon to fix, rather than a rebuild in month five. It also keeps everyone with a stake in the project looking at the same thing.
Full Documentation
Every project ships with the technical documentation a new team would need: system architecture, API references, database schemas, and deployment guides. After handover your own people can maintain and extend the software without calling us.
Post-Launch Support
An optional monthly retainer covers critical bug fixes, security patches, performance monitoring, and up to eight hours of minor changes a month. Anything bigger is scoped and quoted separately.
Cloud Deployment
Production runs on cloud infrastructure with Thailand data residency, a high-availability setup, automated backups, and the whole environment defined as code so it can be rebuilt on demand. We set it up and run it. Your IT team does not have to take it on.
Your brief
Three answers are enough to start
No spec or documents needed. Answer these briefly on LINE and we will set up a call to go through the details with you.
LINE opens with these three questions typed in. Fill in your answers and send.
- What do you use for this today?Excel, a LINE group, paper, or an off-the-shelf tool
- Where does the work get stuck?The step that is slowest, repeated, or most often wrong
- When do you want to start?This month, next quarter, or still just looking
03Who it's for
Who is this for?
- Businesses whose workflows only fit off-the-shelf software with heavy workarounds
- Companies handling sensitive data that need PDPA, HIPAA, or PCI-DSS compliance built in
- Organisations that want the scope agreed up front, and a team that keeps looking after what it built, with documentation another team could pick up
- Teams ready to replace a legacy system or a spreadsheet process with software built for the job
04FAQ
Frequently asked questions
It depends on the scope. Scope and timeline are agreed with you before development starts, then we quote against them.
A scoping phase produces the full scope and timeline, and we quote against that scope. If you ask for a change in scope later, it is quoted as a separate change order and approved in writing before any work on it begins.
It depends on the size of the work, and you know the delivery dates from the day the scope is agreed, before development starts.
The timeline depends on the scope and complexity of the work. The scoping phase produces a detailed plan with milestones, so the schedule is agreed before development starts, and you see progress all the way through.
Yes. Encryption, access control, consent management, and audit logging are part of our standard architecture.
PDPA compliance is part of SyncEdge's standard architecture patterns. Any project that handles personal data gets data encryption, role-based access control, consent management, and audit logging as baseline requirements, specified at design time.
The same team that built it, under a monthly care plan.
The team that builds your system is the team that keeps looking after it after go-live: security updates, fixes, and changes as your work changes, under a monthly plan with an agreed scope. The system is fully documented, so your own team can take it over if you ever want to. Rights to the code and documentation are set out in the contract before work starts.
Chosen per project. Common choices are React, Next.js, Node.js, Python, and PostgreSQL on Thai-hosted cloud.
SyncEdge picks the stack for the project's requirements, not for internal convenience. Common choices are React, Next.js, Node.js, Python, and PostgreSQL, deployed on cloud infrastructure with Thailand data residency. We favour technologies with long-term support and avoid experimental dependencies that may not be maintained in five years.
Yes, after a technical audit. We will tell you plainly what state the code is in and what it will cost to fix.
We audit the existing codebase before agreeing to take it on. If the code meets our standards, we scope the continuation. If it does not, we tell you what remediation is needed and what it costs, and you decide whether to proceed.
Yes. Hospital work is a dedicated service with its own page.
Hospital projects bring their own demands, chiefly HIS integration and patient data under PDPA, so we run them as a separate service. See the hospital software page in the related services below.
What kinds of systems do you build?
Mostly internal business systems: accounting tools that have to talk to the rest of the operation, stock and warehouse systems, point of sale, booking and appointment systems, customer databases, and integration work joining systems that already exist. If the problem is a specialised system no off-the-shelf product covers, that is the normal case for us.
How is hiring a company different from hiring a freelancer?
Continuity and accountability. A freelancer suits a small, self-contained piece of work with a clear boundary. Once a system has to connect to others, is used across departments, or needs maintaining for years, you want a team with a contract, handover documentation, and somebody accountable when it breaks. We issue full contracts and tax invoices, hand over complete documentation, and the team that built it keeps looking after it.
Judge the paperwork and who is responsible after handover, not the price or the size of the portfolio.
Before you sign, ask for five things: a written scope that says what counts as delivered, a contract that is clear about rights to the source code, a proper Thai tax invoice and correct withholding tax, technical documentation another team can read, and who looks after the system after go-live, on what terms. The contract guide below lists the clauses to check.
We run on spreadsheets. How do we move to a proper system?
Start with the file that several people edit at once and that breaks most often, not every file at once. We work out which columns are the real data and which formulas are business rules, then build a system that does the same job with user permissions and an edit history. Existing data is imported, and the system can still export to Excel for anyone who needs the old report.
We already use packaged software but it is not enough. Do we have to replace it?
Not necessarily. If the existing product still does its core job well, the cheaper route is usually to build only the missing part and connect it through an API or import file, for example a stock or back-office system that posts its figures into your accounting software. Replacing everything makes sense when the product cannot be connected, or its monthly cost grows faster than the business.
Is withholding tax deducted on software development in Thailand?
If the payer is a juristic person, 3% withholding tax normally applies. Commissioned development is treated as hire of work; off-the-shelf software licence fees are treated as royalties. Both are 3%. Individuals paying in a personal capacity do not withhold. Classification follows what the contract actually covers, so confirm it with your accountant before the first payment. We issue tax invoices and accept withholding tax certificates as a matter of course.
05Further reading
When off-the-shelf software is no longer enough
If your team keeps working around a packaged product, or keys the same data into several places, these guides help you decide whether to add a system, switch systems, or build one for the job.
- SaaS vs custom software: costs and trade-offs
- Switching from accounting software to an ERP
- Running stock on Excel: when to switch
- Software development contracts: the clauses to include
- Building systems on LINE OA
- AppSheet pricing, limits and when to move to a real system
- Online document approval systems: PR, leave and expenses
- Dorm and apartment management systems: off-the-shelf or custom
- What Is a CRM System? Options, Pricing and LINE OA
- What Is a Sales Pipeline? Software Compared
Start with the problem
Let's scope your project. No commitment required.
Walk us through the requirements on one call. You will hear what is feasible, what it will cost and how long it will take, and whether we are the right fit at all.
Your business,in professional hands.