Software House in Thailand for Web and App Development
We build it, and we still run it. Websites, mobile apps and enterprise systems for banks, insurers, hospitals and growing Thai companies, built in Bangkok and in service today.
What we build
7 services from one team in Bangkok. Each one works like the real system it comes from: try it here, or open the service for the details.
Web development
Property search, as on lh.co.th
Mobile apps
Secure sign-in, as in TCRB Mobile Banking
AI agents
A member club and its AI agent inside LINE
System integration and APIs
One purchase, 3 systems at work
UX/UI design
From the flow in Figma to the screen that ships
Custom software
Request tracking, as in the BDMS medical record service
Team extension
Engineers who join your team this month
The companies we build for
45+ enterprise brands across banking and insurance, energy, property and hospitality, healthcare, education and government, retail and consumer.
Banking and insurance
Energy and industry
Property and hospitality
Healthcare
Education and government
Retail and consumer
Six years of enterprise software for Thai companies
- 45,000+man-days of engineering
- 100+projects delivered
- 45+enterprise brands
- 2020founded in Bangkok
ISO/IEC 27001 certified. AWS Select Tier Services Partner.
Certified and recognised
ISO/IEC 27001 for information security, AWS Select Tier Services Partner, Microsoft, Google Cloud, Cloudflare and Datadog partner, and Clutch Top Web Developers Thailand 2024.
Where we work most

Banking and insurance
Customer websites, mobile banking, e-KYC and payments, built on top of the core the bank already runs.
Hospitals and health
Patient services on top of the hospital HIS, such as the BDMS medical record request system.
LINE OA and AI agents
Member systems, LIFF apps and AI agents inside the LINE account your customers already use.
How a project runs
A first release usually takes a few weeks to a few months. Larger integration projects go live in planned phases.
Discovery
We learn the business, the users and the systems already in place, and agree the scope.
Design
UX/UI and architecture, tested with your team before a line of production code.
Build
Short cycles you can see working, with your data and your integrations.
Go-live
A planned launch with monitoring, a rollback plan and the team on hand.
MA and CR
We stay: maintenance keeps it healthy, change requests keep it growing.
One team in Bangkok
More than 70 people work at CODEMONDAY: engineers, designers and project leads. You work directly with the team that builds and runs your system.



What clients say
Work professionally. Delivered on time. Fast on support.
PanisaeCom Channel Development Manager, UnileverThey are positive and optimistic. Everything goes smoothly and easily.
NoppasitFounder, Brain DynamicsThere is nothing better than working with a good team.
PawarissornFounder, Foxbith DesignQuestions buyers ask
What is a software house?
A software house is a company that designs, builds and maintains software for other organisations. CODEMONDAY is a software house in Bangkok that builds web apps, mobile apps, AI agents and system integrations for enterprises.
How do I choose a software house in Thailand?
Ask to see systems that are live today, who built them and who runs them now. Check security certification such as ISO/IEC 27001, how the team integrates with your existing systems, and what support looks like after Go-live.
What does CODEMONDAY build?
Websites and web apps, iOS and Android apps, custom back-office systems, system integration and APIs, UX/UI design and AI agents. We also extend client teams with our engineers.
Which industries do you work with?
Mostly banking, insurance and healthcare, plus energy, property, retail, agriculture and food, education and government. Clients include ttb, KBank, SCB, Sompo, BDMS, PTTEP, Com7 and Unilever.
Is CODEMONDAY ISO/IEC 27001 certified?
Yes. CODEMONDAY is certified to ISO/IEC 27001, so client data and systems are handled under an audited information security management system.
Where is CODEMONDAY?
Our office is at Silom Plaza, Silom Road, Bang Rak, Bangkok. We work with clients across Thailand in English and Thai.
Talk to an engineer
Call, message us on LINE or leave your details, and our team will get back to you.
















