CNC HBM Machinist - Oil & Gas Precision

Sigma Engineering Works; Abu Dhabi; On-site; AED 134,000 - 223,000; Full time

Job summary

Sigma Engineering Works, part of Mazrui Energy Services, seeks a skilled HBM Operator to drive CNC horizontal boring for large oil & gas components. You will read drawings, set up fixtures, and ensure tight tolerances through tool selection and program edits.

Join a role focused on precision machining, quality assurance, and collaboration with engineers and QA teams to meet delivery schedules in a demanding energy services environment.

Qualifications

• Diploma from a recognised Higher Technical College.
• Minimum five years of practical workshop experience.
• Experience in Oil & Gas industry.
• Ability to operate HBM machines.
• Ability to read engineering drawings.
• Ability to select right cutting tools and parameters.

Responsibilities

• Set up, program at operator level, and operate CNC Horizontal Boring Machines for large, heavy-duty oil & gas components.
• Machine critical parts such as valve bodies, wellhead components, flanges, manifolds, spools, and pressure-containing equipment.
• Read and interpret engineering drawings, GD&T, API specifications, and customer requirements.
• Align, level, and secure large workpieces using precision fixtures, clamps, and alignment tools.
• Select, install, and set cutting tools, boring bars, and tool offsets suitable for various alloys.
• Edit CNC programs at the machine (tool offsets, wear offsets, minor code changes).
• Perform boring, drilling, facing, milling, tapping, and contouring operations with tight tolerances.
• Establish and verify work coordinates, datums, and reference points.
• Monitor machining processes for dimensional accuracy, surface finish, and repeatability.
• Inspect parts using precision measuring instruments (micrometers, bore gauges, dial indicators, CMM).
• Maintain compliance with API, ASME, and customer quality standards.
• Identify and troubleshoot machining or program-related issues affecting part quality.
• Perform routine machine maintenance, calibration checks, and housekeeping.
• Complete production and quality documentation including inspection reports and travelers.
• Follow strict safety procedures for handling large components and heavy lifting equipment.
• Collaborate with programmers, engineers, quality, and inspection teams to meet delivery schedules.

Skills

Operate HBM machines

Read engineering drawings

Read GD&T & API specs

Select cutting tools & parameters

Oil & Gas industry experience

Education

Diploma from Higher Technical College

Tools

HBM CNC control

Job description

Sigma Engineering Works, part of Mazrui Energy Services, seeks a skilled HBM Operator to drive CNC horizontal boring for large oil & gas components. You will read drawings, set up fixtures, and ensure tight tolerances through tool selection and program edits.

Join a role focused on precision machining, quality assurance, and collaboration with engineers and QA teams to meet delivery schedules in a demanding energy services environment.