The document is a curriculum vitae for S. Madhusudhanan applying for an instrument engineer or supervisor position. It outlines his 17 years of experience in oil, gas, and process plants including roles as an engineer, supervisor, and construction supervisor. It details his skills like planning, problem solving, and experience with instrumentation systems. It also lists his educational certifications and licenses. Finally, it provides a detailed work experience summary outlining his roles and responsibilities in various past positions related to instrumentation.