Onto Innovation is a leader in process control, combining global scale with an expanded portfolio of leading-edge technologies that include: 3D metrology spanning the chip from nanometer-scale transistors to micron-level die-interconnects; macro defect inspection of wafers and packages; metal interconnect composition; factory analytics; and lithography for advanced semiconductor packaging. Position Summary: The Senior Accountant is responsible for supporting key areas of the general ledger, month-end and quarter-end close, account reconciliations, financial reporting, and internal control compliance.