Founder of Angkor Design. 25 years in technology, building websites, mobile apps and hospitality software from Siem Reap.
25Years in tech
125Articles written
1,000+Businesses served
2Cambodia studios
Andy Sim — full name Kamsan Sim — is an experienced Creative Director and webmaster with 25 years in the technology industry, and the founder of Angkor Design.
He began his career in 1999 as a computer instructor at the Cambodia Institute for Development and Human Rights (CIDH) and the International Khmer American Institute (IKAI). In 2005 he moved into website design at Cambodia Angkor Real Estate Co., Ltd. (C.A.R.E.), and in 2009 into the hospitality industry at Angkor Miracle Resort & Spa.
Over the years he has worked with Borei Angkor Resort & Spa, NagaWorld Casino & Resort and Thansur Bokor Casino & Resort, and served as Group Creative Director for Memoire Resort & Spa. He then started his own team, specialising in web design and hosting, mobile app development, interactive multimedia and hospitality software. Since 2018 he has focused on SEO, SEM, EDM and digital marketing, and writes here to share what that work has taught him.
In October 2025 he was one of the judges at the Turing Hackathon Cycle 9 in Siem Reap, organised by the Techo Startup Center. Away from the screen he photographs Cambodia's natural places, often by drone.
2025 focus
Where Andy is pointed now
Search stopped being ten blue links. These are the skills that decide whether a business gets quoted by an AI answer — or never surfaces at all.
01Vibe coding
02Answer Engine Optimisation (AEO)
03Generative Engine Optimisation (GEO)
04AI prompt engineering
The craft underneath
Design & build
Website design
Mobile app development
UI/UX design
Hospitality websites and software
Infrastructure
Domain registration and web hosting
Website performance
Site security
Search & growth
SEO
SEM and EDM
Digital marketing
Content strategy
The road here
1999
Teaching the machines
Computer instructor at CIDH and the International Khmer American Institute (IKAI).
2005
Into the web
Moved into website design at Cambodia Angkor Real Estate Co., Ltd. (C.A.R.E.).
2009
Hospitality years
Entered the hospitality industry at Angkor Miracle Resort & Spa.
2012
Creative direction
Group Creative Director for Memoire Resort & Spa, with projects for Borei Angkor Resort & Spa, NagaWorld and Thansur Bokor.
2018
Search takes over
Focused the studio on SEO, SEM, EDM and digital marketing.
2025
Judging the next wave
Judge at the Turing Hackathon Cycle 9 in Siem Reap, organised by the Techo Startup Center.
2025
The AI shift
Took the studio into AI-era search and delivery: vibe coding, AEO, GEO and prompt engineering.
Questions people ask
Who is Andy Sim?
Andy Sim, whose full name is Kamsan Sim, is the founder and Creative Director of Angkor Design, a web and mobile studio in Siem Reap, Cambodia. He has 25 years in the technology industry and has led website, mobile app and hospitality software projects for more than a thousand businesses since 2005.
What does Andy Sim do?
He designs and builds websites and mobile apps, runs domain registration and hosting, and leads search and growth work — SEO, SEM and email marketing. Since 2025 his focus has been AI-era search: answer engine optimisation (AEO), generative engine optimisation (GEO), prompt engineering and vibe coding.
How much experience does Andy Sim have?
25 years. He began in 1999 teaching computing at the Cambodia Institute for Development and Human Rights and the International Khmer American Institute, moved into website design in 2005, and has worked in hospitality technology since 2009.
What industries has Andy Sim worked in?
Mostly hospitality and tourism. He has delivered work for Angkor Miracle Resort & Spa, Borei Angkor Resort & Spa, NagaWorld Casino & Resort and Thansur Bokor Casino & Resort, and served as Group Creative Director for Memoire Resort & Spa — alongside e-commerce, corporate and real-estate clients.
Where is Andy Sim based?
Siem Reap, Cambodia. Angkor Design also has a studio in Phnom Penh, and works with clients worldwide.
How can I hire Andy Sim?
Request a free consultation through the Angkor Design website and he will reply within one business day with a plan, timeline and fixed quote. You can also reach the studio on Telegram, WhatsApp or Messenger.
