About JST Group

Founded in Bangkok in 1983. Operating across 44 countries today.

Who We Are

Southeast Asia's Integrated Services Group

JST Group was founded in Bangkok in 1983 and has grown into a regional operating group supporting clients across 44 countries. Today, more than 1,600 people work across our group in various operational, technical, and corporate functions, serving energy, infrastructure, marine, and industrial clients across Southeast Asia and beyond.

Our strength comes from the breadth of capability within the group. We support clients through workforce deployment, HR compliance, payroll, recruitment, corrosion control, protective coatings, inspection, heat treatment, digital systems, and specialist technical services. Each division brings practical experience from the field and the discipline needed for regulated industrial work.

Our promise is simple: we take ownership of the work we accept. Before mobilisation, we align on scope, risk, compliance, and delivery requirements; once agreed, we manage the job through to completion with clear communication and accountable delivery. That reliability is why clients continue to work with JST Group.

44+ Countries
Countries of operation
1,600+ People
Across the group
ISO Certified
ISO 9001:2015 & ISO 45001
40+ Years
Of industry experience

Company Timeline

Four decades of growth, innovation and excellence.

1983
JST Group founded in Bangkok, Thailand
1993
Established manpower supply to TOTAL, Thai Shell and PTTEP
1995
Expanded into corrosion control and asset integrity services
1996
Began supplying UNOCAL's offshore fields
1998
Entered the BES Energy Resources joint venture — a 5-year competency-based training programme to nationalise Chevron's Benchamas & Tantawan fields
2003
Launched HR Solutions division, becoming a leading EOR provider in Thailand
2006
Opened Vietnam office in Ho Chi Minh City
2008
Acquired 100% of BES Energy Resources
2012
ISO 9001 certification achieved across all core divisions
2013
Established South Africa office
2014
Achieved TRACE International anti-bribery certification
2015
Establishment of Guardian Protective Coating as a dedicated protective coating manufacturer.
2018
Expanded corrosion control operations to 44+ countries
2022
Launched Digital Transformation division
2024
ISO 9001:2015 recertification and continued expansion