Software Development Company in Thailand
CODEMONDAY is a software development company in Bangkok that designs, builds and runs software for companies in Thailand. One in-house team covers web, mobile, custom software, system integration, UX/UI design and AI, and our engineers can also join your team. We have delivered 100+ projects for clients such as ttb, KBank, Sompo and BDMS, and CODEMONDAY is ISO/IEC 27001 certified.

Services
Seven services from one in-house team in Bangkok. Pick the one you need now. The same team takes your system live and keeps running it under MA and CR.
Web design and development
Corporate websites, customer portals and web apps in English and Thai, connected to your CRM, payments and back office.
Mobile app development
iOS and Android apps from one React Native codebase, with secure sign-in and the back end behind them.
Custom software development
Back-office systems, workflows, portals and dashboards built around how your teams work.
System integration and APIs
Connect new channels to core banking, HIS, ERP and AS/400 through secure APIs and microservices.
UX/UI design
User flows and screen design in Figma, by the team that also builds the product.
AI agents and AI automation
AI Web Agents that answer from your company's data and do real tasks, on your website, in LINE OA and in your systems.
IT outsourcing and team extension
CODEMONDAY engineers join your team on a monthly basis, managed by CODEMONDAY, to the same ISO/IEC 27001 standard.
How we work, from first call to MA and CR
Discovery
We learn the business goal, the users and the systems involved. Then we agree the scope and the plan.
Design
We design the user flow, the screens and the architecture before the build starts.
Build
Senior engineers build in short rounds and connect the new system to the ones you already run.
Go-live
Security, performance and UAT tests come first. Then we take the system live in a controlled release.
MA and CR
After Go-live, we keep the system healthy under MA (maintenance) and add new features as CRs (change requests).
How pricing works
Cost depends on the scope and the team it needs: the features, the screens and the number of systems to connect. After a free first consultation, we send an assessment and a quotation, with no obligation.
Fixed scope
For a clear brief. We agree the scope, the price and the plan before the build starts.
Monthly team
For a product that keeps changing. Our team works through your roadmap each month, with support included.
MA and CR after Go-live
MA (maintenance) keeps the system healthy under an agreed SLA. A CR (change request) adds a new feature and is quoted on its own.
Frequently asked questions
Which service do I need first?
Tell us the goal and the systems you run today. In a free first consultation, we suggest where to start and which services the first release needs.
Do you work with mid-size companies?
Yes. Most of our clients are large companies, and we also build for mid-size businesses. Start with a free consultation, and we suggest the smallest first release that solves the problem.
Fixed price or man-day: how do you price?
We use both. A clear brief gets a fixed scope and price, and a product that keeps changing suits a monthly team. Change requests after Go-live are estimated in man-days and quoted one at a time.
How long does a software project take?
A first release typically takes a few weeks to a few months. Complex integration projects are planned in phases together with your team.
Do you offer IT outsourcing or team extension?
Yes. CODEMONDAY engineers can join your team on a monthly basis. CODEMONDAY manages them, and they work to our ISO/IEC 27001 certified process.
Can you work with our in-house IT team?
Yes. We plan complex projects in phases together with your IT team, and connect our work to the systems they run.
Talk to an engineer
Call, message us on LINE or leave your details, and our team will get back to you.
