Mechanical Engineer

Mechanical Engineer - Oil & Gas (Downhole Monitoring & Surface Packages)

OnSpec DAQ Pty Ltd is an Australian company championing the supply of Data Acquisition Systems across Australia. Our mission is to sustain a working culture that delivers intelligent, commercial and innovative solutions for our clients.

The Role

With the expansion of our business, OnSpec is seeking a Mechanical Engineer to plan, engineer and oversee the build, installation and lifecycle support of downhole monitoring equipment and surface data-acquisition skids/packages for oil & gas projects.

Key responsibilities include:

• Develop mechanical solutions from concept to detailed design, producing calculations, 3D models and fabrication/installation documentation for monitoring skids and assemblies.
• Specify materials, components, piping and mechanical services; define duty, capacity and pressure/temperature envelopes, and set plant/skid layout to meet performance and safety targets.
• Lead assembly and commissioning of mechanical/process packages (FAT/SAT), setting acceptance criteria and verifying performance through testing and data.
• Create and maintain engineering procedures for installation, modification, QA/QC, testing, inspection and preventive maintenance aligned with WHS and relevant Australian Standards.
• Analyse workshop/field utilization, layouts, throughput and cost data to improve worker/equipment efficiency and line balancing.
• Build work-measurement baselines (time-and-motion/work sampling) to underpin capacity planning, maintenance strategies and productivity targets.
• Coordinate project resources—trades, contractors, suppliers, materials, plant and equipment—to deliver to schedule, budget and quality.
• Carry out site and workshop inspections to confirm performance is sustained; raise NCRs and implement corrective actions.
• Drive continuous improvement and root-cause investigations (RCA/5-Whys/FMEA) and implement engineered solutions.
• Maintain technical records—drawings, BOMs, specifications, test reports—with configuration/version control.
• Collaborate with operations, electrical/instrumentation, HSE and procurement teams, and interface with vendors and clients during design, build and commissioning.
• Prepare technical reports, calculations and scopes for new designs, surveys and maintenance programs.

Location, roster & salary

This is a full-time role based out of Toowoomba (QLD), following a standard 5x2 roster (Monday–Friday). Some workshop activities and field travel across the Surat and other basins may be required.

• Salary range: AUD $80,000 – $85,000 + superannuation, commensurate with experience.

The ideal candidate will be:

• Experienced: Minimum 3–5 years' experience in oil & gas, heavy industry or rotating/process equipment environments, with proven ability in mechanical design, commissioning and maintenance of plant or packaged systems.
• Proficient in CAD: Advanced skills with 3D CAD software (SolidWorks/Inventor preferred), including assemblies, drawings and simulation capabilities, plus ability to interpret P&IDs, isometrics and fabrication drawings.
• Practically minded, strong problem-solver, with a focus on safety and quality.
• A team player who communicates clearly with field crews, clients and suppliers.

The successful candidate will have:

• Bachelor's degree in mechanical engineering (or equivalent).
• Demonstrated experience in mechanical design/commissioning/maintenance of plant or packages.
• Knowledge of relevant Australian Standards and WHS practices; ability to develop SWMS/JSA.
• Current driver's license (essential).
• MR or higher truck license (desirable).

Every applicant matters

OnSpec is an equal opportunity employer. We particularly welcome and encourage applications from Aboriginal and Torres Strait Islander people, women, the LGBT+ community, mature workers, people with disabilities and people from different cultural backgrounds.

Job Type: Full-time

Pay: $80,000.00 – $85,000.00 per year

Benefits:

• Salary packaging
• Visa sponsorship

Ability to commute/relocate:

• Toowoomba City QLD 4350: Reliably commute or planning to relocate before starting work (Required)

Education:

• Bachelor Degree (Required)

Experience:

• Oil & gas Mechanical Engineering: 3 years (Preferred)

Language:

• English (Required)

Work Location: In person