Institution of Incorporated Engineers, Sri Lanka (IIESL) established in 1977,was incorporated by an Act of Parliament of Democratic Socialist Republic of Sri Lanka. IIESL has a wide opening for personnel of all levels in the field of Engineering Technology.

Incorporated Engineers are the internationally recognised category of Engineers in the field of Engineering Technology, who effectively manage the construction, operation, maintenance functions of projects, by implementing appropriate technology.

IIESL is the only professional institution representing Engineering Diplomates in eleven different fields of Engineering Technology namely Chemical Engineering, Civil Engineering, Electrical Engineering, Electronic & Telecommunication Engineering, Mechanical Engineering, Marine Engineering, Nautical Studies, Polymer Engineering, Textile & Clothing Engineering, Information Technology and Agriculture Engineering required by the country.