The Senior Assembly Technician is a technical expert responsible for leading the precision assembly, alignment, inspection, and troubleshooting of turbine rotors and housing modules in gas and steam turbine systems. This role demands deep experience in rotating equipment assembly, the ability to guide complex build operations independently, and the leadership skills to mentor junior staff and ensure compliance with OEM and quality standards.
Lead the complete mechanical assembly of turbine rotors, disks, blades, spacers, shrouds, seals, and housings.
Perform precision alignment, torquing, stack-up, and concentricity checks of rotating and stationary components.
Interpret and review technical drawings, work instructions, BOMs, and engineering changes.
Conduct pre-assembly inspection and post-assembly verification, including runout, clearance, and height checks.
Oversee and execute blade installation, balance weight fitment, thermal fits, and sealing system assembly.
Utilize precision tools and instruments (micrometers, dial indicators, height gauges, laser alignment tools) for dimensional control.
Serve as a mentor and technical lead, training junior and mid-level technicians on procedures, tools, and safety practices.
Collaborate with Quality Assurance and Engineering teams to resolve non-conformances, design issues, and root cause analysis.
Maintain accurate assembly documentation, including build records, inspection sheets, and traceability logs.
Ensure all activities follow EHS, FOD, and OEM quality standards on the shop floor.
Turbine Rotor Expertise – Disk stacking, blade fitment, tip clearance setup, thermal and mechanical fit operations
Casing and Housing Assembly – Split line match-up, bearing fit, torque sequencing, and flange alignment
Measurement and Inspection – Use of advanced tooling to verify tolerances, runout, and concentricity
Team Leadership and Mentorship – Training and supervising technicians; improving SOPs and shop practices
Problem Solving – Addressing alignment issues, interference fits, and part quality challenges on the floor
Technical diploma or certification in Mechanical Technology, Industrial Maintenance, or equivalent
Minimum 8 years of experience in mechanical assembly of gas/steam turbines or heavy rotating machinery
Strong command of precision measuring instruments, mechanical drawings, and assembly procedures
Demonstrated ability to lead complex builds independently and supervise multi-person assembly operations
Familiarity with OEM standards (GE, Siemens, Mitsubishi, MAN, etc.), ISO/ASME quality standards
Skilled in rigging, lifting, and handling of heavy turbine components in accordance with safety protocols
Excellent documentation, communication, and leadership skills
Experience with OEM turbine overhauls or factory new builds
Exposure to rotor balancing, test rig preparation, and field service assembly support
Knowledge of digital assembly records, ERP systems, or QA traceability tools
Participation in continuous improvement (Kaizen, 5S, Lean) initiatives