Precision Mechanical and Vacuum Engineer

As a Mechanical Design Engineer at Bharat Atomic, you will be responsible for designing and manufacturing a Field Emission Scanning Electron Microscope (SEM) for sub-nanometer imaging. You will own the complete mechanical design and all computer-aided design work required for this high-tech analytical instrument. Key Responsibilities: - Produce complete computer-aided design assemblies, manufacturing drawings, and bill of materials with clear tolerances. - Control vibration, drift, and thermal expansion through careful structural layout and material selection. - Work directly with in-house equipment on design for machining, welding, finishing, cleaning, and vacuum qualification. - Build and test prototypes; refine designs based on measurement and performance results. - Develop precision motion systems for sample positioning and beam alignment with micron-level stability. - Integrate mechanical, electrical, and optical components with correct alignment, grounding, and shielding. - Design all mechanical systems for vacuum operation: vacuum chamber, column supports, sample stage, detectors, lock-lock, and frame. - Design for high and ultra-high vacuum including flanges, seals, feedthroughs, viewports, and bake-out strategy. Qualifications Required: - At least 5 years of experience designing precision scientific or semiconductor instruments like electron microscopes, lithography tools, metrology systems. - Expert user of professional computer-aided design software with a strong command of tolerances and geometric dimensioning. - Demonstrated experience designing for high or ultra-high vacuum, including materials, seals, and leak testing. - Experience designing precision motion assemblies using bearings, flexures, piezoelectric or stepper-driven mechanisms. - Ability to perform structural, thermal, and vibration analysis and validate results through testing. - Hands-on experience with prototype fabrication, supplier management, and assembly documentation. If there are any additional details about the company in the job description, please provide them.,