Senior Mechanical Engineer – Water Treatment EPC Design

TradesApp; Riyadh; On-site; SAR 350,000 - 520,000; Full time

Job summary

TradesApp in Riyadh is seeking a Senior Mechanical Engineer to lead mechanical design for industrial water treatment and desalination projects. You will own design deliverables, coordinate with vendors, fabrication teams, and multidisciplinary project groups.

The ideal candidate has 8–10+ years of experience in mechanical design, familiarity with ASME Section VIII, ASME B31.3, API 650 and related standards, and hands-on CAD with AutoCAD/Plant 3D or SolidWorks.

Qualifications

• Bachelor's degree in Mechanical Engineering.
• 8-10+ years of relevant design and engineering experience.
• Familiarity with ASME Section VIII, ASME B31.3, API 650, AWWA, ASTM standards.
• Experience with GRP/FRP tanks and piping systems is highly desirable.

Responsibilities

• Design mechanical systems for water and wastewater treatment equipment.
• Prepare GADs, fabrication drawings, mechanical datasheets, and equipment specifications.
• Design and review pressure vessels, tanks, filters, skid-mounted equipment, and piping systems.
• Perform mechanical calculations for vessels, tanks, supports, nozzles, pumps, and equipment foundations.
• Review piping layouts, isometrics, material specifications, and equipment interfaces.
• Coordinate fabrication activities, vendor drawings, welding documentation, inspections, FAT, and hydrotesting.
• Prepare material take-offs (MTOs), BOMs, and technical procurement documents.
• Support site installation, pre-commissioning, commissioning, and final documentation.

Skills

Mechanical design

Pressure vessel design

Piping systems

Fabrication drawings

Equipment specifications

AutoCAD

Plant 3D

SolidWorks

Welding & NDT

Hydrotesting

Corrosion protection

Vendor coordination

Education

Bachelor's degree in Mechanical Engineering

Tools

AutoCAD

Plant 3D

SolidWorks

Job description

TradesApp in Riyadh is seeking a Senior Mechanical Engineer to lead mechanical design for industrial water treatment and desalination projects. You will own design deliverables, coordinate with vendors, fabrication teams, and multidisciplinary project groups.

The ideal candidate has 8–10+ years of experience in mechanical design, familiarity with ASME Section VIII, ASME B31.3, API 650 and related standards, and hands-on CAD with AutoCAD/Plant 3D or SolidWorks.