- Drilling Superintendent
- Rig Mover
- Drilling Consultant
- Tool pusher
- Drilling Foreman
- Well Site Supervisor
- Driller/ Assistant Driller
- Storeman
- Radio Operator
- Rig Mechanic
- Rig Instrument Tech
- Rig Electrician
- Deck Officer
- Deck Supervisor
- Deck Foreman
- Pumpman/ Derrickman
- Rig Welder
- Motorman
- Floorman
- Sailors
- Senior Truck Pusher
- Junior Truck Pusher
- Safety & Medic Officer
- Rigger I
- Certified Crane & Forklift Operators
- Heavy Duty Drivers
- Mechanic
- Auto Electrician
- Tireman
- FPSO/FPU
- Fracturing
- Stimulation
- Workover or Completion
- Gas Plant Operations
- Production Technologist
- Catering
- Coil Tubing
- Dispatcher
- Field Commissioning/SCADA
- Field Service Tech
- Logging
- Mud Engineer / Drilling Fluids
- MWD / LWD
- Perforation
- Process Control
- Stickline Operator
- Snubbing
- Surveying
- Well Control
- Well Servicing & Testing
- Wireline Operator
- Commissioning Engineer/HUC
- Construction Engineer
- Construction Manager
- Contracts Administrator
- Fabricator
- Inventory Control
- Logistic Coordinator
- Material Management
- Logistic & Materials Supervisor
- Piping Supervisor
- Planner/Scheduler
- Project Controls
- Purchasing
- Site Engineer
- Supply chain Management
- Warehouse Person
- Chemical Engineer
- Drilling Engineer
- Drilling & Production Technician
- Petroleum Engineer
- Production Engineer
- Production Testing
- Reservoir Engineer
- CAD/CAM
- Civil Engineer
- Design Engineer
- Facilities Engineer
- Field Development
- Floating System
- Installation Engineer
- Marine Engineer
- Pipeline Engineer
- Piping Engineer
- Process Engineer
- Riser Engineer
- Subsea Engineer
- Electrical Engineer/Electrician
- HVAC Engineer
- Instrument Technologist
- Engineering Manager
- Engineering Technician
- Instrument & Control Engineer
- Project Engineer
- Structural Engineer
- Technical Manager
- H2S Engineer
- Cartography/Mapping
- Geochemist
- Well Site Geologist
- Geophysicist
- Geoscience Technician
- Geoscientist
- Geo Technical Engineer
- Petro physicist
- Seismic
- Certification Engineer
- Maintenance Engineer
- Maintenance Manager
- Maintenance Technician
- NDT Technician
- Noise & Vibration Control
- Crane Operator
- Painting/Coating/Blasting Inspector
- Rigger/Slinger/Scaffolder
- Welder/Fitter/Turner/ Helper
- Welding Superintendent
- Piping Inspector
- NDT Inspector
- QA/QC/Welding Inspector
- E&I Inspector
- MT,UT, PT, Rope Access
- Emergency Response
- Environmental Engineer
- Fire Fighting
- HSE Auditor
- HSE Manager/Advisor
- Loss Prevention
- Paramedic/Nurse
- Doctor
- Safety Engineer
- Safety Officer
- Mechanical Supervisor/Tech
- Oil Technical/Storage Management
- Pipeline Operator
- Plant Operation Engineer
- Plant Technical Assistant
- Refinery/Plant Operations Supervisor
- Refinery/Plant Operator
- Refinery Specialist
- Contract Engineer
- Cost Engineer
- Document Controller
- E&P Asset Manager
- Editor
- Operation Manager
- Process Manager
- Project Manager
- Risk Manager
- Translator