Hello Ganesh,

An instrumentation engineer is required to do following work:

• Design and develop control systems
• Maintain the existing control systems
• Manage the control systems
• Collaborate with design engineers, purchasers and other staff members involved in the production processes
• Manage projects within the given restraints including cost and time
• Troubleshoot
• Ensure that the instruments comply with health and safety regulations
• Ensure that quality standards are maintained
• Provide consultancy support

Top companies which recruit instrumentation engineer are as follows:

• National Instruments
• ABB
• Larsen & Tourbo
• Robert Bosch
• Invensys
• GE
• Suzlon
• Apna Technologies
• Whirlybird
• ESSAR

Good luck